Structural Geology and Tectonics research at the Jackson School spans the entire spectrum from continental to oceanic and upper crustal to mantle tectonics. Only a handful of programs in the country cover such a wide range. Researchers investigate processes at all scales using field and marine geophysical-based observations; laboratory-based petrologic, geochronological, structural and geochemical analyses; and theoretical and physical modeling.
Tectonically-focused research addresses processes at active and ancient plate boundaries. At convergent margins, research topics range from subduction zone processes to continental collision, mountain uplift, and basin evolution. Extensional tectonic processes under investigation range from continental extension in the deep to shallow crust to evolution of passive margins, spreading ridges, and oceanic crust. Other research concentrates on the evolution of transitional plate boundaries as well as transform boundaries.
Other major research areas focus on deformation processes including thin-skinned fold and thrust belt processes and associated fluid flow; formation of salients; salt tectonics; and strain partitioning in extensional and contractional shear zones. Another major research focus is on understanding fracturing, fracture processes, fractured reservoirs, and relationships to diagenesis and fluid flow.
Faculty & Research Scientists
mantle dynamics; fault system dynamics; structural seismology; numerical modeling
Mechanics and kinematics of deformation in continental lithosphere, rheology of the crust and upper mantle, mechanisms of strain localization, experimental rock mechanics, tectonic geomorphology and long term slip rates and hazard on large-scale strike-slip faults.
|Elizabeth J Catlos|
The geological evolution of the Turkey (various regions), Himalayas (India and Nepal), south India (Tamil Nadu), and Slovakia (Carpathians); models for heat, mass, and fluid flow along tectonic structures; developing techniques for isotopic microanalysis; applying mineral equilibria to estimate environmental conditions during dynamic recrystallization; accessory mineral geochronology; stone decay and deformation mechanisms. Overall, I am interested in developing and applying petrochemical and geochemical techniques to the study of lithosphere dynamics.
|Gail L Christeson|
Marine seismology, mid-ocean ridge structure and emplacement processes, oceanic crustal structure, ocean-bottom seismology, seismic refraction
|Ian W Dalziel|
Tectonics, geodynamics, geography of ancient times, plate reconstructions, structural geology
|Tim P Dooley|
Dynamics and kinematics of fault systems using scaled analog modeling, field studies, remote sensing, seismic data, and comparison with published examples; 3D geometries and kinematics of strike-slip fault systems using innovative analog modeling techniques; modeling of delta tectonics, salt tectonics, and segmented strike-slip and extensional fault systems
Structural evolution of rift basins; Salt tectonics; Sediment routing in rift basins; Normal fault array growth; Seismic interpretation;
|Ian J Duncan|
Expertise in geomechanic and geochemistry applied to: risks associated with CO2 sequestration; hydraulic fracturing for shale gas production; environmental impact of hydraulic fracturing; and the water-energy nexus. Current research focuses on the scientific, environmental and public policy aspects of unconventional natural gas production, the water-energy nexus, and carbon capture and storage. He has a particular interest in risk analysis, decision making, and legal/regulatory issues related to fracing, CO2 sequestration, CO2-EOR, and energy production.
Fault and fracture mechanics, diagenesis and low-temp. geochemistry, fluid flow and transfer processes in sedimentary basins, deformation mechanisms of the upper crust, structural control of mass and heat transfer in sedimentary basins, effects of chemical mass transfer on the mechanical and hydraulic behavior of fractures and faults, chemical interaction between fluids and minerals
Fluids in diagenetic and hydrothermal systems, Fluid inclusion techniques, Fracture analysis, Structural diagenesis, Unconventional hydrocarbon reservoirs, Raman spectroscopy
Seismology, deep earthquakes, Texas earthquakes, moonquakes, statistical analysis of earthquake catalogs
|Julia F Gale|
Natural fracture / vein systems in sedimentary and metamorphic rocks; structural geology; tectonics
|Sean S Gulick|
Tectonic processes, tectonic-climate interactions and geohazards of convergent margins and transitional tectonic environments Role of catastrophism in the geologic record including impact cratering, hurricanes, and tectonic events Marine geophysical imaging at nested resolutions and ground truth through drilling, coring, logging, and submersibles
|Nicholas W Hayman|
Currently active projects include studies of ocean-crustal faulting, the dynamics of continental rifting, evolution of forearc basins and accretionary prisms, and mudrock microstructure. Also many projects involve sailing on research vessels to study active spreading centers in various corners of the globe.
|Mark A Helper|
Dr. Helper is a field geologist, a generalist whose interests span igneous and metamorphic petrology, structural geology, tectonics, mineralogy and planetary field geology. His current research explores geochemical and isotopic similarities of Proterozoic and Archean crust in East Antarctica and the southwestern U.S., the Precambrian geology of Texas, and the origin of epidote blueschists in the Klamath Mountains of northern California. Recent senior honors theses under his supervision have examined the mineralogy of Texas ...
|Brian K Horton|
Tectonics of sedimentary basins, evolution of orogenic systems, sediment provenance and routing systems, nonmarine depositional processes.
|Michael R Hudec|
Salt tectonics, 3-D computer modeling, kinematic models for evolution and growth of salt structures, structural geology, cross-section restoration and balancing, seismic interpretation
|Stephen E Laubach|
Structural diagenesis, structural geology, fracture analysis, fluid inclusion and cathodoluminescence studies, rock mechanics, mechanical and fracture stratigraphy, hydrocarbon exploration and development in deep and/or structurally complex areas, tight gas sandstone, coalbed methane, shale gas; geologic aspects of hydraulic fracturing, application of borehole-imaging geophysical logs to stress and fracture evaluation, structural evolution of North American Cordillera, fracture history of NW Scotland, regional fracture studies Argentina.
|Luc L Lavier|
Tectonics; the structural and geodynamical evolution of continental and oceanic rifts, as well as collisional environments; numerical techniques to model tectonic processes on crustal and lithospheric scales; deformation; subduction
|Lawrence A Lawver|
Marine geophysics, plate tectonics, magnetics, gravity, heat flow, seismic studies, paleogeographic reconstructions of Gondwana, the Polar Regions, East Asia, and the Western Pacific
Structural geology, tectonics, deformation processes in the upper continental crust, folds, faults, opening-mode fractures, fluid flow through fracture systems, applications of fractals, natural hazards
|Kirk D McIntosh|
Structure and development of continental margins along convergent and transpressive plate boundaries; sediment accretion, subduction, and erosion at convergent margins; forearc and backarc extension and compression; fluid dynamics in accretionary prisms; shallow-subduction seismicity
|Dr. Tip Meckel|
Stratigraphy, structural geology, CO2 sequestration, carbon capture and storage, CCS, high-resolution 3D seismic imaging
|Kitty L Milliken|
Petrography and geochemistry of siliciclastic rocks; diagenesis; electron microbeam methods: X-ray mapping, cathodoluminescence imaging; micro-scale reservoir characterization
Structural petrology, field-oriented structural geology, the evolution of complexly deformed terranes, strain analysis, deformation mechanisms, the interaction between chemical and physical processes during deformation
Thermo-/Geochronology, Tectonics and Structural Geology, Isotopic Provenance Analysis, Archeometry, Geothermal Exploration, and Thermal Maturation
Are rocks elastic? Not really... especially when saturated with multi-phase fluids. Did you know that a seismic wave is able of mobilizing the liquid saturating rocks and that such a process reduces the seismic wave strength? Yes, this phenomenon, called Wave-Induced-Fluid-Flow could be used to improve subsurface imaging. How? The absorption of elastic energy varies with frequency, this means that certain frequencies are attenuated and other maybe not. Why is this important? Well, adding information ...
Fracture analysis and structural diagenesis Brittle structural petrology Fractured carbonate rocks Tectonics and metamorphism of subduction zones
|Harm J Van Avendonk|
Van Avendonk is an active-source seismologist who specializes in the acquisition and inversion of seismic refraction data on land and at sea. Often these seismic refraction data are used for a tomographic inversion. The resultant seismic velocity models help us to interpret the composition of the Earth’s crust and mantle, the geometry of sedimentary basins, and the structure of plate boundaries.
Crustal deformation, GPS/Geodesy, active plate boundary processes, subduction tectonics, geohazards
|Christopher K Zahm|
Reservoir characterization, flow modeling in fractured reservoirs, porosity-permeability evolution
Poroelastic modeling of sedimentary basins, Fracture and damage mechanics of rocks, Borehole stability, Natural and Induced hydraulic fracture, Fluid injection induced earthquake
|Eric D Kelly|
Structural, microtextural, and chemical investigations of metamorphism using field, analytical, and numerical techniques: Petrogenesis of metamorphic rocks including pressure-temperature-time-deformation paths that reveal crustal processes; thermodynamic and kinetic investigations of nucleation and diffusion, including impacts of slow kinetics on metamorphic crystallization that cause disequilibrium.
|Daniel M Sturmer|
Details on [link:http://www.jsg.utexas.edu/wu/research/][bold]My research homepage[/bold][/link]
Adjunct/Emeritus Facultyâ€‹ & Research Scientists
Research on mantle evolution using tools of mineralogy, petrology, and geochemistry.
|Ian O Norton|
Plate tectonics, structural evolution of continental margins, reconciliation of observations from structural geology with regional tectonics
|Robert M Reed|
Microstructural analysis of rocks, particularly small-scale deformation structures and pores in mudrocks.
Research on mantle evolution using tools of mineralogy, petrology, and geochemistry.
|Yaser A Alzayer|
I am interested in understanding the spatial distribution of natural fractures in carbonate depositional systems and the effect of the stratigraphy and lithology on fracture intensity and geometry.
|Meredith A Bush|
Meredith is a PhD candidate focusing on the evolution of contractional mountain belts and intra-continental basins. Meredith is interested in the tectonics of sedimentary basins in intra-continental settings, clastic sedimentology and provenance analysis. Her current field areas include the Qaidam basin on the Tibetan Plateau, the Raton basin in Colorado and New Mexico, and the Galisteo-El Rito basin of New Mexico. Her research includes a variety of analytical techniques, including magnetostratigraphy, detrital mineral geochronology, heavy ...
|Owen A Callahan|
I am interested in fluid flow in faults and fractures, specifically the interplay between chemical alteration, mechanical deformation, and conduit evolution in hydrothermal systems.
|Amanda Z Calle|
My research is focused on the Cenozoic sedimentary, structural and exhumational history of the Eastern Cordillera to modern Chaco foreland basin in southern Bolivia. A multidisciplinary approach of source-to-sink, geochronology, low-temperature thermochronology and structural mapping will be used. Inherited pre-Andean structures and their response to contractional settings will also be evaluated to decipher the Cenozoic evolution of this part of the Central Andes.
|Tomas N Capaldi|
I am a third year PhD student, focusing on Cenozoic to modern tectonic evolution of the flat-slab region in western Argentina. I study modern river networks using zircon U-Pb chronology to assess what factors are represented by sand provenance, such as: drainage area, variable erodibility, and zircon fertility of different source rocks. I use the modern river provenance as a baseline to reconstruct Cenozoic paleo-drainages during Andean mountain building and to differentiate the timing of ...
|Joshua K Davis|
My research focuses on deciphering the break-up history of East India and East Antarctica. The project involves developing a holistic plate model for the breakup of East Gondwana (Antarctica, Australia, India, Madagascar, Seychelles, and Sri Lanka) and the subsequent seafloor spreading in the Mesozoic Indian Ocean. Then, coupling recent geophysical data from the margins with our plate model, I can develop a conceptualized tectonic model for the breakup of India and Antarctica. Via 3D numerical ...
|Thomas M Etzel|
Broadly speaking my research interests include metamorphic petrology, isotope geochemistry, and lithosphere dynamics. Currently I am studying the tectonic evolution of western Turkey, specifically the Menderes Massif. One component of this work involves using recent advancements in garnet geothermobarometry to construct detailed P-T paths. Another component of this work will involve dating garnets using the Lu-Hf system. Combined, I hope to produce high resolution P-T-t paths that will improve our understanding of the tectonometamorphic history ...
|Marina C Frederik|
Marina is working on a project titled 'Morphology and structure of the accretionary prism offshore North Sumatra, Indonesia and Kodiak Island, USA'
Baiyuan is currently applying geomechanical models to study thin-skinned fold and thrust belts system. The research will further our understanding of stress, strain and compaction behaviors in fold and thrust belts. Baiyuan also aims to comp up with an improved approach to predict pore pressure in compressional regions. Past experience inclides: Developed techniques and software to predict reservoir pressure in two and three dimensions Reconstructed porosity, permeability and pressure evolution with basin modeling approach Analyzed ...
My research focuses on elucidating the timing and mechanisms of shortening, exhumation, and basin evolution in the Eastern Cordillera of northern Peru and Ecuador. By integrating U-Pb geochronology and measured sections from Cenozoic hinterland basins with (U-Th)/He thermochronology and mapping on uplifted Mesozoic and basement units, I hope to provide a detailed chronology of the uplifts that link the Northern and Central Andes.
I am using wide-angle refraction tomography to study the role of magmatism and tectonics in crustal accretion at the Mid Cayman Spreading Center, an ultra-slow spreading center in the Caribbean Sea.
|Jacob S Jordan|
As a numeric geoscientist, I find myself fascinated by a litany of topics: particularly those associated with the genesis, reactive transport and extraction of molten rock. Also why is Kanye’s verse in 2-Chainz Birthday Song is so bad. Is he joking or something? Does he actually think that those leather pants are cool? As a curious and enthusiastic academic, I hope to shed light onto these topics, and contribute to answering other such questions ...
|Alissa J Kotowski|
I'm pursuing my Ph.D. at the Jackson School of Geosciences, working with Whitney Behr and Danny Stockli. I graduated from Boston College in 2014, where my undergraduate research background focused on Earthquake Migration along the North Anatolian and Alpine Faults with links to regional tectonics and structure. My broad interests encompass tectonic processes, structural geology and metamorphic petrology. My research at UT focuses on the structural and rheological evolution of high-pressure metamorphic rocks during subduction ...
|John Z Li|
My research focuses on the structural and tectonic evolution of the Argentine Andes. I will be using a combination of structural analysis and thermochronometry to provide modern age constraints for deformation and exhumation events in the Frontal and Pre-Cordillera. Ultimately, this work seeks to relate observed crustal shortening and related age constraints to the structures observed at depth (significantly, at the transition from normal to flat-slab subduction) in order to better characterize the mechanisms that ...
I consider myself primarily an applied structural geologist and tectonicist, but I have a wide range of interests and research experiences. My current research is focused on understanding the interactions between structures, fracturing, and geochemistry, primarily focusing on fracture systems found in mudrocks. My dissertation project is assessing fault and top seal behavior in CO2-rich systems by looking at an natural analog near Green River, Utah. I am combining field work, experimental geomechanics, petrography, ...
|Patrick K Meazell|
|Renas I Mohammed|
Renas is working on the Zagros fold-thrust belt and foreland basin in Iraq's northern region, Kurdistan. His fields of interest are assessing the effect of sedimentation on deformation sequence and styles, and the controls on wedge dynamics of the northwestern Zagros orogenic belt. He is also interested in understanding the competitive role of axial and transverse drainages in filling sedimentary foreland basins and how sediment dispersal pattern change in response to thrust propagation. In his ...
Carbonate Sedimentology & Sequence Stratigraphy, Carbonate Rock Properties, Geo-mechanical Modeling. Research is focused on steep-rimmed carbonate shelf systems, specifically the timing and controls behind shelf margin syndepositional deformation.
|Casey M Obrien|
Hi! I am a masters student conducting research in the Fracture Research and Application Consortium. My work involves studying coupled mechanical and chemical diagenetic processes in deformation bands in sandstone. In particular, I am interested in identifying how these mechanical and chemical processes affect fluid flow properties in the bands. I employ scanning electron microscopy (SEM) imaging techniques to study microscale textural properties such as pore geometry and connectivity, grain size and mineralogy, degree and ...
I conduct structural interpretation and analysis on offshore 3-D seismic and well data for determining fault seal characteristics pertaining to hydrocarbon trapping and CO2 storage in the San Luis Pass area, Texas Gulf Coast. Research Interests: - Crustal deformation, particularly brittle processes - Geometry of structural hydrocarbon traps and the sealing capability faults - Geophysical techniques in support of structure, tectonic, and petroleum studies - Geologic field methods and geophysical data acquisition
|Michael G Prior|
My current research focuses on brittle deformation within the lower plate of metamorphic core complexes. I am using a combination of structural analysis and apatite (U-Th)/He dating to determine the fault-slip history along low-angle normal faults (LANFs). The Bullfrog Hills and Bare Mountain in westernmost Nevada expose several LANF splays that have exhumed Proterozoic to Devonian rocks during southern Walker Lane transtensional deformation. The cooling history of detachment splays has important implications for the ...
|Edgardo J Pujols|
My main expertise and research centers on quantifying the temporal aspects and interplay between hinterland deformation and basin evolution. For the past years (both my M.S. and Ph.D. thesis research), my studies have focus on the intricate dynamic processes linking basin evolution and large-scale tectonics combining conventional field techniques and extensive laboratory work. My M.S. research at the University of Kansas investigated the timing and linkages of normal faulting and its influence ...
|Sebastian G Ramirez|
I am currently working on two sub-projects. The first aims at understanding the conditions of Kumano forearc basin (offshore Japan) nucleation and early evolution through 3D-seismic and sandstone petrography provenance analyses. The second involves the study of the Cretaceous-to-Recent sedimentary record in the northernmost Neuquen basin (western Argentina) through traditional field work and detrital zircon analysis. My goal is to better constrain the timing and characteristics of early Andean compression and to test whether or ...
My research interests include paleopiezometry, rock mechanics and strain localization in the lithospheric mantle. I am examining stress-grainsize relationships in feldspar and orthopyroxene in naturally deformed rocks, in an effort to test experimental extrapolations of these relationships to estimating stress in the lithosphere. I am also exploring the mechanisms and longevity of strain localization in the lithospheric mantle through experimental deformation of dry olivine aggregates.
|Nathan S Tinker|
I use develop numerical experiments of subduction to investigate how slip and long-term deformation accumulate and interact at subduction zones during earthquake cycle. Including, 1. Explore the relationships between long-term strain accumulation and the seismic cycle. 2. Explore mechanisms that could explain how strain accumulation is modified in space and time by the presence of large asperities at the subduction interface.
|Gabriel Travassos Tagliaro|
Gabriel received a B.S degree in Geology from Unisinos University in Brazil, and is currently a Ph.D Student at University of Texas. He is interested in the evolution of continental margins. Gabriel uses seismic data, well data, and numerical modeling to better understand the mechanisms that control sedimentation and deposition in continental margin sedimentary basins, and the interactions between sea-level changes and tectonic processes. Research focuses on Neogene interval of the Northwestern Australian ...
My interests are in structural geology and the coupled mechanical and geochemical processes of fracture, fluid flow and diagenesis. My current master’s thesis project seeks a better understanding of permeability within fracture cements of low permeability rocks. I employ argon ion milling and SEM imaging techniques on fracture cements in core and outcrop samples from a variety of low permeable formations. Through this work, I intend to gain a better understanding of the mechanical ...
My doctoral research was focused on tectonics, geodynamics, and structural geology. My dissertation is titled [italic]Continental extension in orogenic belts: Modes of extension, origin of core complexes, and two-phase postorogenic extension[/italic]. I defended my dissertation on Apr. 15, 2016, and graduated on May 21, 2016 with a Ph.D. degree in [italic]Geological Sciences[/italic]. Starting Sep. 19, 2016, I will be a research fellow at the University of Melbourne, Australia. I will work on dynamic processes in continental ...
|Graduate and undergraduate research in geologic sequestration of CO2 (Graduate or Undergraduate)|
Gulf Coast Carbon Center supports a team of students and post docs working in geologic sequestration (deep subsurface long-duration storage) of the major greenhouse gas CO2, as a method to reduce release to the atmosphere. Student projects are wide ranging, from sedimentology to policy, linked in that they are 1) multidisciplinary and 2) applied to current issues. Students are typically jointly supervised by faculty in geology or petroleum geosystems engineering and staff at the GCCC. A class in geologic sequestration is offered in the fall some years.
Posted by: Susan Hovorka
|Fault and fracture processes, structural diagenesis (Graduate)|
Graduate student projects combine the fields of fault and fracture mechanics and low-temperature geochemistry addressing deformation mechanisms of the upper crust, structural control of mass and heat transfer in sedimentary basins, the effects of chemical mass transfer on the mechanical and hydraulic behavior of fractures and faults, and the chemical interaction between fluids and minerals. Projects usually require the integration of field and laboratory analytical or numerical work and preference goes to applicants that are equally comfortable in the field and in the lab. Research topics include field- and core-based structural geology, geomechanics, geofluids, geochemistry, and natural resources including CO2 sequestration. A current research emphasis lies in Structural Diagenesis which combines the traditionally separate fields of brittle structural geology and diagenesis/geochemistry. Preference goes to PhD applicants with a prior MS degree and MS applicants with undergraduate research experience, preferentially through completion of a senior's thesis. Applications should be submitted to the MS or PhD program in Geological Sciences (GEO). Please contact Peter Eichhubl (firstname.lastname@example.org for further details.
Posted by: Peter Eichhubl
|Innovative Detrital Provenance Studies - Double Dating PLUS (Graduate)|
A major thrust of my current research the development and application of more comprehensive isotopic detrital provenance tools. U-Pb on zircon is clearly the big work horse, but only goes so far and sometimes yields "no" useful info, e.g., if the source of the sediment is mostly recycled sediment. We have extensively pursued double dating of zircons by U-Pb and He, as zircon He ages yield very interesting insights into the thermal and tectonic history of the source terrane; often yielding very different insights than crystallization ages. The combination is powerful, but I think we can take things so much farther by combining double dating with other constrains. People have tried fission track (not precise enough), Hf/Hf (to get mantle separation model ages), etc., but what we want to do and are working on is really Double Dating ++, combining zircon U-Pb-He dating with a variety of other geochemical aspects to more comprehensive understand detrital provenance and improve paleo-tectonic reconstructions. For example, trace-element thermometry (Ti in zirc), REE on zircon (met vs mag origin), Hf/Hf (see above), oxygen isotopes, etc. and also to develop rutile in an analogous manner (e.g., Zr in rut thermometry, Cr/Nb ratio (mafic vs granulitic), REE, etc.). The sky is the limit and what can learn so much. The issue in part it, how much can a single grain tell us before it's gone? The project sounds very laboratory oriented, but it's really a combination of field and lab work. We have identified a few possible case study areas, e.g., Morocco; great exposures, long-lived and preserved record of basin deposition since the Precambrian. My group is already working on some case studies in NW Himalayas, the N & S Pyrenees, the Sevier FTB, Permian Basin and other foreland basin. New projects include provenance studies along rifted and passive continental margins such the Gulf of Mexico, the central Atlantic Margins in Canada, USA, Portugal, and Morocco.
Posted by: Daniel Stockli
|Research in structural diagenesis (Graduate or Undergraduate)|
Fundamental and applied research on fractures, particularly as these studies apply to petroleum reservoirs, is conducted under the auspices of the Fracture Research and Application Consortium at The University of Texas at Austin. The academic program of research, mentoring and teaching is led by staff of the Bureau of Economic Geology, the Department of Petroleum & Geosystems Engineering and the Department of Geological Sciences. Students in the Energy & Earth Resources Graduate Program also participate in FRAC sponsored research projects. For further information on opportunities for fracture studies within the program see the FRAC pages on opportunities in Geology, Petroleum Engineering, Geophysics, and Energy Economics. FRAC welcomes Visiting Scientists from industry and from other academic institutions. Contact Steve Laubach for more information about these opportunities. A key part of the FRAC academic program is the Structural Diagenesis Initiative, a new teaching and mentoring perspective on interacting mechanical and chemical processes at high crustal levels in the Earth. For more information on the initiative see the Structural Diagenesis Initiative web site. If you are a prospective student, please see the admissions information on the Petroleum & Geosystems Engineering or Jackson School of Geosciences web sites.
Posted by: Stephen Laubach
|General Opportunities in Field and Laboratory Based Studies (Graduate or Undergraduate)|
My position does not permit sole supervision of graduate student theses, but I co-supervise or serve on graduate student theses committees, particularly those involving aspects of GIS, GPS, structural geology, tectonics and petrology/mineralogy. I have supervised several undergraduate student honors thesis, both lab- and field-based, and look forward to continuing to do so.
Posted by: Mark Helper
|Geochronology of the Ordovician (Graduate or Undergraduate)|
The Ordovician time scale is bracketed by major extinction events, including one that is the 2nd largest in Earth's history. The goal of this project is to date zircon grains collected from bentonite (clay-rich) samples from Ordovician exposures from a range of locations (Canada, US, Scandinavia) to further understand the late Ordovician Hirnantian Ice Age and the big end Ordovician extinction. The project would involve analysis of sedimentary and volcanic rocks, petrology, geochemistry, zircon geochronology, and tectonic interpretations. With Dr. Michael Brookfield (Univ. Mass Boston)
Posted by: Elizabeth Catlos
|Nature, age, and emplacement of ophiolite complexes in NW India (Graduate or Undergraduate)|
During the mid-Mesozoic to Eocene, the Indian subcontinent moved over 60 degrees latitude north towards Asia, closing the ancient Neo-Tethyan Ocean. This ocean plays a central role in reconstructing a number of orogenic systems extending from Europe to Asia, but debated issues remain because exposures of the former ocean and its sub-basins are affected by plate collision, arc and terrane accretion, and later deformation. The goal of this project is to date and geochemical analyze an isolated basic-ultrabasic massif that overlies shelf limestones of the northern Indian passive margin in NW India. The ophiolite body currently has no comprehensive published geochemical studies which would allow comparison with other complexes across the Himalayan range and its ages have large errors. The project involves geochronology of metamorphosed mafic igneous rocks, petrology, and tectonic interpretations. With Profs. M. Brookfield (Univ. Mass Boston) and G.M. Bhatt (Univ. Jammu).
Posted by: Elizabeth Catlos
|Granitic rocks from the Biga Peninsula of western Turkey (Graduate or Undergraduate)|
This project involves a field, geochemical and geochronological study of a number of granite plutons located in the Biga Peninsula of western Turkey. The objective is to decipher their tectonomagmatic histories to understand large-scale dynamics of extension in the back-arc of the northern Aegean. Back-arc basins are major components of numerous subduction zones around the world and deciphering the processes occurring in the Aegean back-arc region allows us to evaluate the role of the subducting slab, a prior tectonic history, strike-slip dynamics, and magma migration in the development of these key plate tectonic features. The Aegean is atypical of back-arc basins in general, and a number of processes complicate its geology, including the closure of branches of Tethyan oceans and strike-slip deformation. How the geology of the Biga Peninsula links to that of Greece and Bulgaria is also debated. Data generated in this project will be used to evaluate models for Aegean extension and to understand how the geology of the Biga Peninsula relates to that elsewhere in the region. Elements that are fundamental to models for Aegean extension are located in the field area, including Tethyan sutures, extensional structures, and active strands of the North Anatolian Shear Zone. With Dr. Tolga Oyman (Dokuz Eylul University)
Posted by: Elizabeth Catlos
|International Research Experiences for Students (IRES): Closing Oceans: Assessing the Dynamics of Turkish suture zones (Graduate or Undergraduate)|
The National Science Foundation is providing support for 4 weeks of geological field-based research and training experiences across Turkey for undergraduate and graduate students. They will conduct research within a multidisciplinary, regional framework focusing on investigating arc accretion processes that occurred in Turkey during the closure of branches of ancient ocean basins. Because of its Tethyan suture zones and fragments, Turkey is an ideal location to develop models for accretionary orogenesis and how continents grow. Students will partner with Turkish researchers to explore a multidisciplinary range of geological concepts discussed in their courses while making a significant impact on our understanding of processes related to the formation of continental crust. Students will visit field areas across Turkey to develop a regional-scale perspective. All IRES students will undego an intense pre- and post-departure program developed with the assistance of Turkish colleagues and numerous UT Austin resources. Recruitment will begin in Fall 2015. The recruitment plan is geared towards attracting members of underrepresented groups and all IRES student participants will be US citizens or permanent residents, as required by the program solicitation. We target high-achieving graduate students and sophomore level undergraduates or internal transfers majoring in geology because others at higher levels will likely have time constraints on their summers due to degree-required field camp. Consideration will also be made for students attending other geoscience departments in Texas outside the Jackson School. With Drs. Rich Kyle and Brent Elliott (Jackson School); Tolga Oyman (Dokuz Eylul University, Dept. Geological Engineering), Bora Rojay (Middle East Technical University, METU Dept. of Geological Engineering) and Sebnem Duzgun (METU Dept. of Mining Engineering), and Aykut Akgun (Karadeniz Technical University, Dept. Geological Engineering).
Posted by: Elizabeth Catlos
|High Resolution 3D marine seismic for fluid studies (Graduate)|
Opportunities exist to become involved in the design, acquisition, processing, and interpretation of high-resolution 3D marine seismic data. Current applications include characterization for subsurface storage of carbon dioxide and natural fluid migration studies. We anticipate development into imaging modern systems as reservoir analogs.
Posted by: Timothy Meckel
|Academic Seismic Portal at UTIG|
The portal is the gateway to the Marine Seismic Data Center (MSDC). MSDC's goal is to support education and research with access to and preservation of academic active-source seismic data. Our partner, the Academic Seismic Portal at LDEO, has a complementary seismic inventory primarily of field data. These cooperating data centers, part of the Marine Geoscience Data System, are supported by the National Science Foundation.
|Applied Geodynamics Lab|
An industry-funded consortium dedicated to producing innovative new concepts in salt tectonics. This research comprises a mix of physical and mathematical modeling and seismic-based mapping and structural-stratigraphic analysis of some of the world's most spectacular salt basins.
Installed in 2002-2003, the JEOL JXA-8200 electron probe microanalyzer (EPMA) is equipped with five wavelength dispersive spectrometers (WDS), an energy dispersive detector (EDS), and two image detectors in secondary and backscattered electron modes. The primary aim of the microprobe is quantitative elemental analysis of minerals on a microscale with high precision (less than a percent relative for major constituents) and low detection limits (commonly a few tens to few hundreds ppm)
|Environmental Scanning Electron Microscope|
Installed in the fall of 2001, this is a 30 kV tungsten gun high-resolution environmental scanning electron microscope (ESEM) with a 3.5 nm resolution in high vacuum, low vacuum, and environmental modes at 30 kV. The ESEM is equiped with a Peltier cooled stage, a heating stage, an EDS sytem (EDAX), a EBSD system (HKL – Oxford Instruments), and a cathodoluminescence detector (Gatan).
|Fluid Inclusion Lab (BEG)|
Principal equipment includes: an Olympus BX 51 optical microscope, fitted for use with transmitted, reflected and UV light; a FLUID, Inc.-adapted USGS-type gas flow heating/cooling stage; a Linkam THMSG 600 degree C programmable heating/cooling stage; and a digital camera. The lab is fully equipped with sample preparatory facilities for preparation of doubly-polished thin and thick sections. The lab will soon incorporate an experimental hydrothermal lab component that will include 6 externally-heated cold-seal pressure vessels (up to 800°C, up to 700 MPa) used for the preparation of synthetic fluid inclusions and for quartz cement growth experiments.
|Geometrics GEODE Seismograph Systems|
The Department has 2 boxes (total 48 Channels) with 48 vertical phones and 16 3 component phones).
|High-Resolution X-ray Computed Tomography Facility|
Provides high resolution non-destructive, density maps of solid samples (rocks, fossils, etc) up to a maximum size of 50 cm diameter by 150 cm high (50 kg mass). Equipment: An industrial CT scanner that is an adaptation of medical CAT scanners.
|HR-ICP Mass Spectrometers|
Equipment available: Thermo Element2 HR-ICP-MS with ESI autosampler system for solutions; and Thermo Element2 HR-ICP-MS with Photonmachines Analyte G2 Excimer laser ablation system.
|Isotope Clean Lab (Lassiter)|
Within the Department of Geological Sciences there are three clean-room laboratories supplied with HEPA-filtered class 100 air where sample preparation and ion-exchange chromatography for isotopic analysis may be done under ultra-clean conditions, making possible very low analytical blanks (e.g., < 1 pg Pb for U-Pb geochronology, and <10 pg Sr). There are also two other laboratories with HEPA-filtered work stations where sample preparation and ion-exchange chromatography are performed. These labs are affiliated with the Mineral Separation Facility (see description).
|Ocean-Bottom Seismometer (OBS)|
An Ocean-Bottom Seismometer (OBS) is a seismometer that can be deployed on the seafloor for weeks or months, recording either earthquakes or man-made seismic signals. To withstand pressures at large depth (up to 5500 m) in the oceans, all electronics of this instrument are kept inside a glass sphere which can withstand such pressures. The sensors of all instruments (discussed below) include a 3-component accelerometer and a hydrophone, all designed for seismic data with a dominant frequency near 10 Hz. The seismic data are recorded on flash memory. Correct timing of the seismic recording is provided by an accurate clock, which also resides inside the sphere. After a seismic study on the seafloor is complete, the instrument is brought back to the sea surface using an acoustic release mechanism. UTIG has long been involved in marine seismology. The development of a UTIG OBS instrument program began in 1978.
There are several aspects to our laboratory that make it different from others. One is our automatic handler system created at California Institute of Technology and adapted for our needs. Scientists and students can keep up with changes to our system by keeping in touch with the other 6 similar systems in the world and RAPID Consortium at http://rapid.gps.caltech.edu/. It also includes a cryogenic magnetometer and portable magnetic susceptibility meter (TerraPlus KT-10 Plus).
|Portable High-Resolution Multichannel Seismic System (MCS)|
UTIG owns and maintains elements of a self-contained, portable, high resolution multichannel seismic (MCS) system that has been used over the past several years in salt- and fresh-water depths from ~4m to over 1km, on vessels from 10m to 35m in length. The 24-channel system is designed to be transported worldwide and to be installed on vessels of opportunity. Survey design, navigation, data acquisition, and near real-time MCS processing can be performed on non-dedicated laptops in the field. Deployment and recovery of gear is done by hand, requiring as few as 3 persons. The only constraints on the system are weight limits of the vessel and electrical requirements of the dedicated air compressors. For platforms with insufficient electrical capabilities, a fuel-powered generator or air compressor can be rented as a substitute.
|Quadrupole ICP Mass Spectrometer|
The Quadrupole ICP-MS laboratory (with laser ablation) is used for elemental determinations in a wide range of liquid (e.g., natural waters, dissolved sediments/rocks, digested biomass) and solid (e.g., rocks, minerals, glasses) samples. The ICP-MS instrument is an Agilent 7500ce, capable of measuring trace element concentrations in solution over a nine-order linear dynamic range, from ppt to 100s of ppm. Sample introduction systems include a Micromist concentric nebulizer with a Peltier-cooled spray chamber for aspirating solutions, and a New-Wave UP¬193-FX 193 nm excimer laser ablation system for micro-sampling of solids. Sub-ppm detection limits are obtained routinely by laser ablation. The Agilent 7500ce is equipped with a collision/reaction cell, allowing for quantification of environmentally important matrix/plasma-sensitive elements such as As, Se, and Fe. The instrument is housed in a positive-pressure HEPA-filtered laboratory equipped with a weighing station, laminar flow bench, and Type 1 (18.2 M?) ultrapure water station.
|Scanning Electron Microscope Lab (BEG)|
The Bureau houses two SEMs devoted primarily to research on unconventional reservoirs under projects supported by industry consortia (FRAC, MSRL, RCRL) and by government-sponsored programs (STARR, GCCC). One is a conventional SEM devoted to wide-area mosaic mapping for the study of microscale fracture populations in tight formations. The other is a high-resolution instrument largely devoted to the study of gas shales.
|Scanning Electron Microscope Lab (DGS)|
Installed in 2008, this is a high-performance, 30 kV tungsten gun scanning electron microscope with a high resolution of 3.0 nm. The low vacuum mode allows for observation of specimens which cannot be viewed at high vacuum due to a non-conductive surface. This SEM has three detector systems - secondary electron (SE), backscattered electron (BSE), and X-ray EDS detectors.
The structural geology lab is where rocks are processed for structural geology and tectonics research. Storage space and all necessary equipment are available for preparing slabs, thin sections, and mineral separation for geochronology.
|Thermal Ionization Mass Spectrometry (TIMS) Lab|
Measures the isotopic compositions and elemental concentrations of Rb-Sr, Sm-Nd, Lu-Hf, U-Th-Pb, Li, B, Mg, K, Zr, and REE. Equipment: Seven-collector Finnigan-MAT 261 thermal ionization mass spectrometer (1987) A single-channel ion-counting systems.
|U-Pb Geochronology Clean Labs|
Within the Department of Geological Sciences there are three clean-room laboratories supplied with HEPA-filtered class 100 air where sample preparation and ion-exchange chromatography for isotopic analysis may be done under ultra-clean conditions, making possible very low analytical blanks (e.g., < 1 pg Pb for U-Pb geochronology, and <10 pg Sr). There are also two other laboratories with HEPA-filtered work stations where sample preparation and ion-exchange chromatography are performed. These labs are supported by the departmental sample preparation facility, which includes shatterboxes for sample pulverization, and a crusher, a disc mill pulverizer, a Rogers table, a Wilfly table, a mica table, sieves, heavy liquids and Franz magnetic separators for mineral separation.
This lab is equipped with a Spectrex PC-2200 Laser Particle Counter and several sets of 8" brass mesh sieves to analyze volcanic particles in sizes from centimeters down to 1 micrometer for determining size distributions of volcanic tephra deposits and their componentry.
|Applied Geodynamics Laboratory|
The Applied Geodynamics Laboratory (AGL) is dedicated to producing innovative new concepts in salt tectonics. This research comprises a mix of physical and mathematical modeling and seismic-based mapping and structural-stratigraphic analysis of some of the world's most spectacular salt basins.
|Fracture Research and Application Consortium|
The Fracture Research and Application Consortium (FRAC) is an alliance of scientists from the Bureau and the departments of Petroleum and Geosystems Engineering and Geological Sciences that seeks fundamental understanding of fractures and fracture processes dedicated to conquering the challenges of reservoir fractures.
|High-Resolution X-ray Computed Tomography Facility|
The High-Resolution X-ray Computed Tomography Facility at The University of Texas at Austin (UTCT) is a national shared multi-user facility supported by the Instrumentation and Facilities Program of NSF's Earth Sciences (EAR) directorate. UTCT offers scientific researchers across the earth, biological and engineering sciences access to a completely nondestructive technique for visualizing features in the interior of opaque solid objects, and for obtaining digital information on their 3D geometries and properties.
|Network for Earthquake Engineering Simulation|
The George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) is a national, networked, simulation resource that includes geographically-distributed, shared-use, next-generation experimental research Equipment Sites built and operated to advance earthquake engineering research and education through collaborative and integrated experimentation, theory, data archiving, and model-based simulation. The goal of NEES is to accelerate progress in earthquake engineering research and to improve the seismic design and performance of civil and mechanical infrastructure systems through the integration of people, ideas, and tools in a collaboratory environment. Open access to and use of NEES research facilities and data by all elements of the earthquake engineering community, including researchers, educators, students, practitioners, and information technology experts, is a key element of this goal.
A program of research into plate tectonics and geologic reconstructions, the PLATES Project is supported by an industry consortium. Our primary objectives are to model past and present plate movement, compile comprehensive databases, develop plate motion computer software and apply plate motion models.
|Structural Diagenesis Initiative|
Structural diagenesis is a new perspective on interaction of mechanical and chemical processes at high crustal levels in the Earth. SDI promotes the growth of this new discipline.
|Texas Consortium for Computational Seismology|
The mission of the Texas Consortium for Computational Seismology is to address the most important and challenging research problems in computational geophysics as experienced by the energy industry while educating the next generation of research geophysicists and computational scientists.
Affiliated UT Programs & Centers
|Center for Frontiers of Subsurface Energy Security|
CFSES is one of only two centers out of 46 EFRCs with focus on subsurface energy. Our goal is a scientific understanding of the physical, chemical, and biological subsurface processes from the very small scale to the very large scale so that we can predict the behavior of CO2 and other byproducts of the energy production that may need to be stored in the subsurface. At this aim, we need to integrate and expand our knowledge of subsurface phenomena across scientific disciplines using both experimental and modeling methodologies to better understand and quantify the behavior at conditions far from equilibrium. The unique aspect of our research is the approach of the uncertainty and of the complexity of the fluids in the geologic media from the molecular scale to the basin scale and their integration in computational tools to better predict the long term behavior of subsurface energy byproduct storage.
|Structural Diagenesis Initiative|
Book covers (Laubach)Posted by Stephen E Laubach
Cover art for books
Brittle structures, fluid flow, and diagenesis: Valley of Fire to Moab, October 2014Posted by Peter Eichhubl
Field trip to Valley of Fire (NV), San Rafael Swell (UT), and Moab (UT) in October 2014, sponsored by a grant by the GDL Foundation. Team: Peter Eichhubl (instructor), Jon Major (co-leader), Sara Elliott (co-leader), Andras Fall, Chris Landry, Zhiqiang Fan, Nike Tokan-Laval, Casey O'Brien, Erick Wright, Mint Doungkaew, Peter Laciano.