The petrology and mineral physics group at the Jackson School explores mantle geochemistry; volcanic eruption dynamics; metamorphic textures and reactions; lithospheric dynamics; fluid migration in the crust and mantle; and formation of ore deposits. Graduate students at the Jackson School can explore a wide range of processes from theoretical, experimental, and applied perspectives, and greatly benefit from the diverse studies in the group and one of the best equipped research groups in the country.

Jaime Barnes' research focuses on using stable isotopes as geochemical tracers of fluids in various tectonic settings, to decipher fluid-rock interactions and metasomatism at high temperature (including serpentinization processes), relationships between metamorphic processes and deformation, and volatile transport in subduction zones to aid in quantifying geochemical cycles.

Bill Carlson's research focuses on developing a quantitative understanding of the rates and mechanisms of metamorphic processes, such as quantitatively analyzing primary metamorphic microstructures, linked to numerical simulations of their development, to understand fundamental processes of recrystallization. The greatest novelty in this work is the use of high-resolution X-ray computed tomography (HR X-ray CT) to reveal the sizes, shapes and disposition of crystals within a rock.

Elizabeth Catlos' research focuses on applying geochemical techniques to the study of lithosphere dynamics in order to understand the broader tectonic history of regions in Turkey, the Himalayas (India and Nepal), and south India (Tamil Nadu). Her interests include the geochemistry of igneous and metamorphic rocks, geochronology of a variety of minerals, applying mineral equilibria to estimate environmental conditions, and novel petrographic imaging techniques.

Jim Gardner's research focuses on the physical and chemical aspects of volcanic eruptions and magmatic processes through field studies of active volcanic centers, as well as using experimental petrology to study pre-eruption contents of volatiles in magmas and the degassing of those volatiles during eruption.

John Lassiter's and Jung-Fu "Afu" Lin's research focuses on the geochemistry and mineral physics of deep-Earth materials to understand how melts are generated in the mantle, how subduction of crust and sediments has affected the long-term chemical and physical evolution of the Earth's interior, and how properties of earth materials are affected by extreme pressures and temperatures. Geochemical research includes projects examining the nature and origin of mantle plumes and the global cycling of volatiles in the Earth. Research on mineral physics emphasizes an understanding of the interiors of the Earth and other planets through direct examination of the properties of materials under high pressure-temperature conditions.

Rich Ketcham's research focuses on theory, calibration, and inversion approaches for extracting thermal history information from various isotopic systems, primarily fission-track and (U-Th)/He. He is setting up a cutting-edge fission-track laboratory. Rich also focuses on high-resolution X-ray computed tomography, including developing techniques in data acquisition, optimization, and processing to extract information for studies in petrology, economic geology, paleontology, hydrogeology, and meteoritics.

Rich Kyle's research on hydrothermal systems integrates mineralization into a broad framework involving fluid and isotope geochemistry, petrology, tectonics, and geochronology. Long-term studies include pluton- and wallrock-hosted Cu-Au mineralization. Exciting new perspectives are coming from quantitative X-ray computed tomography study of three-dimensional distribution of gold in ores.

Faculty & Research Scientists


Jaime D BarnesJaime D Barnes
Stable isotope geochemistry, metamorphism and volatile transport in subduction zones, fluid-rock interaction and metasomatism, geochemical cycling, stable chlorine isotopes
Whitney  BehrWhitney Behr
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 on large-scale strike-slip faults.
William D CarlsonWilliam D Carlson
Field, analytical, and experimental studies of metamorphic petrogenesis, with emphasis on the rates and mechanisms of metamorphic reactions. Geological applications of high-resolution X-ray computed tomography. Analytical and computational studies of intracrystalline and intergranular diffusion.
Elizabeth J CatlosElizabeth 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.
Raymond L Eastwood
Petrophysics; mainly creation of core-calibrated interpretation models for well logs.
Brent Elliott
James E GardnerJames E Gardner
Volcanology, volcanic eruption processes, magmatic processes, experimental petrology, volatiles in magmas, degassing of volatiles from magmas, control of degassing behavior on volcanic eruptions and formation of ore bodies
Mark A HelperMark 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 ...
Richard A KetchamRichard A Ketcham
High-resolution X-ray computed tomography, CT scanning, 3D image analysis, fission-track dating, thermochronology, structural geology, tectonics, digital morphology, trabecular bone
J. Richard KyleJ. Richard Kyle
Ore deposits geology, strata-controlled mineral resources, metals & industrial minerals exploration, ore petrology, characterization of ore-forming fluids, high resolution X-ray computed tomography applications to ore genesis & processing, geology of energy critical elements, resources & society, geology & mineral resources of Texas
John C LassiterJohn C Lassiter
Earth's origin and evolution, isotope and trace element geochemistry, the role of crust and lithospheric mantle recycling in the generation of mantle chemical heterogeneity, the origin and distribution of water and other volatile elements in the Earth's interior, and the thermal and chemical evolution of the Earth's core and core/mantle boundary
Stephen E LaubachStephen 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.
Jung-Fu  LinJung-Fu Lin
Mineral physics, physics and chemistry of planetary materials, solid-Earth geophysics and geochemistry, high-pressure diamond anvil cell, X-ray and laser spectroscopy
Robert M ReedRobert M Reed
Microstructural analysis of rocks, particularly small-scale deformation structures and pores in mudrocks.
Douglas  SmithDouglas Smith
Research on mantle evolution using tools of mineralogy, petrology, and geochemistry.
Estibalitz  UkarEstibalitz Ukar
Donggao  ZhaoDonggao Zhao
Electron microbeam and X-ray techniques, mantle mineralogy and petrology, environmental mineralogy, nuclear waste management, and materials science.

Postdoctoral Researchers


Athma R BhandariAthma R Bhandari
Celia  DalouCelia Dalou
Experimental petrology, high-pressure experiments, volatiles cycle in the mantle, halogens in melts minerals and fluids, halogens and trace elements partitioning during mantle melting
Andrew J SmyeAndrew J Smye
Radiogenic isotope systematics of metamorphic rocks; U-Th-Pb geochronology; 40Ar/39Ar thermochronology; Thermal models of crustal evolution; Metamorphic petrology; Phase equilibria calculations; Exhumation mechanisms; Subduction-related devolatisation; Fluid--mineral/rock interaction

Research Staff



Graduate Students


Pedro CuevasPedro Cuevas
A Civil, Industrial Engineer and currently an Energy and Earth Resources masters student at UT Austin with a background in Energy Efficiency, Biomass and Solar Energy. Interested develop the natural gas resources in the Magallanes Basin in Chile. Expertise include: Entrepreneurship, Energy Consumption in the Commercial and Industrial Sector; Biomass; Solar Energy; Energy Finance.
Jacob S Jordan
Stephanie J MooreStephanie J Moore
My research interests are focused on small-scale processes in metamorphic systems and include: crystallization of porphyroblasts, chemical equilibrium/disequilibrium, rare-earth element and trace element zoning in garnet, and geochemistry of fluid infiltration.
Marin C Trautman
Hanyue  ZhengHanyue Zheng
Graduate Student Position in Mineral Physics Lab (Graduate)
The mineral physics lab at the Department of Geological Sciences, Jackson School of Geosciences, the University of Texas at Austin invites applications for graduate student positions towards a Master's or Ph.D. degree in mineral physics. The Jackson School of Geosciences has exceptionally well-funded research programs and offers a number of scholarships to support graduate students for an extended period of time. Candidates with strong background and/or interest in physics (solid state physics), math, and geophysics/geochemistry are strongly encouraged to apply. Our mineral physics research programs focuses on high pressure-temperature experimental studies on materials properties using synchrotron X-ray and optical spectroscopies in a diamond anvil cell. Information about the graduate student programs at the Jackson School is available at: http://www.jsg.utexas.edu/. Please contact Dr. Jung-Fu Lin at afu@jsg.utexas.edu for further information.
Posted by: Jung-Fu Lin

 
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

 
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

 
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

 
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

 
International Research Experiences for Students (IRES): Closing Oceans: Assessing the Dynamics of Turkish suture zones (Graduate or Undergraduate)
I currently have a proposal in review with the National Science Foundation that requests funds to provide 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. If funded, 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

 
(U-Th)/He Geo- and Thermochronometry Lab(U-Th)/He Geo- and Thermochronometry Lab
The UT (U-Th)/He Geo- and Thermochronometry Laboratory is a state-of-the art facility for the development of (U-Th) dating and its applications to tectonics, petrology, volcanology, stratigraphy, geomorphology, and geoarcheology. The facility houses: (1) 3 fully-automated UHV He extraction lines with 2 diode lasers, 1 Nd:YAG lasers, cryogenic purification systmes, quadrupole mass-specs, and step-heating apparati for diffusion measurements, (2) a Helix SFT magnetic sector noble gas mass-spectrometer with automated UHV gas extraction system with diode and excimer laser, (3) two Element2 HR-ICP-MS instruments for solution and laser ablation analysis for thermo- and geochronometery, as well as a dedicated clean room and sample preparation laboratories.
Cathodoluminescence SystemCathodoluminescence System
The desktop cathodoluminescence system provides valuable visual information from rocks and minerals not seen using regular light petrography or other electron beam equipment. Here, electrons bombard a regular rock thin section and the sample glows in visible light. A high-resolution digital camera captures the images. Applications include examining carbonate textures, quartz overgrowths and filled fractures in sedimentary rocks and understanding mineral zoning and fluid interactions in intrusive igneous rocks.
Electron MicroprobeElectron Microprobe
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)
Experimental Petrology LabExperimental Petrology Lab
A state-of-the-art laboratory that consists of three DelTech furnaces for TZM-style pressure vessels and eleven cold-seal pressure vessel systems, four of which are equipped with rapid-quench capabilities. The pressure line for the cold-seal vessels allows for controlled, continuous decompressions. Combined, the experimental facilities allow experiments to be run at up to ~1250 degrees C and from atmospheric to 4000 bars pressure, depending on temperature. The lab also is equipped with a one-atmosphere gas-mixing furnace for homogenization of glasses in controlled atmospheres. Recent funding from the National Science Foundation will allow the laboratory to acquire a Piston Cylinder Apparatus to allow experimental conditions to be extended to 1700 degrees C and up to 4 GPa (40,000 bars) pressure.
Faceting LabFaceting Lab
The JSG gemology and lapidary laboratories comprises two separate facilities: 1) a teaching laboratory housing ten Vargas Fac-a-Gem faceting machines, a custom-built gemstone preformer, and allied tools, equipment (e.g. refractometers, polariscopes, spectrascope, gem microscope, etc.) and displays for faceting and identifying gemstone; 2) a dedicated laboratory with table-top and free-standing rock saws, grinders, sanders and polishing equipment for producing polished rock slabs and cabochons. The laboratories are used by students enrolled in a Gems and Gem Minerals course who receive instruction and introductory training in gemstone identification and the lapidary arts and, less frequently, by graduate students and faculty requiring precision cutting and grinding capabilities for mineral or rock samples.
Fission Track Thermochronology LaboratoryFission Track Thermochronology Laboratory
Enables analysis of fission tracks in apatite and zircon to constrain the low-temperature time-temperature (t-T) history of sedimentary, igneous, and metamorphic rocks.
Fluid Inclusion Lab (DGS)Fluid Inclusion Lab (DGS)
The fluid inclusion laboratory is based around a modified USGS-type gas-flow heating/freezing stage capable of microthermometry of fluid inclusions over a range of 700° to -180°C. The stage is mounted on an Olympus BX51 microscope with a 40X long-working distance objective, 2X image magnifier, and digital camera for image capture. The microscope also has capability for UV fluorescence petrography. Complementary facilities are available for reflected and transmitted light petrography and image capture.
Geomicrobiology LaboratoriesGeomicrobiology Laboratories
Facilities for culturing and characterizing aerobic and anaerobic prokaryotes (Eubacteria and Archaeabacteria) using a Coy anaerobic chamber (H2/N2 atmosphere), Constant temperature water baths, autoclave, incubator, horizontal and vertical gel rigs, refrigerated centrifuge, UV light box, Thermalcycler, phase-contrast and fluorescent microscope. HPLC and GC facilities for degradation studies.
High Temp. Stable Isotope LabHigh Temp. Stable Isotope Lab
This newly renovated lab is overseen by Jaime Barnes and houses a ThermoElectron MAT 253 with associated peripheral devices and instrumentation (TC/EA, GasBench II, Conflo IV, online silicate laser extraction line, general purpose vacuum extraction lines, Cl purification line). Instrumentation permits measurements of the stable H, C, N, O, S, and Cl isotope ratios of silicate, phosphate, and carbonate minerals, volcanic gases, air, and waters
High-Resolution X-ray Computed Tomography FacilityHigh-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.
Infrared (FTIR) SpectroscopyInfrared (FTIR) Spectroscopy
This lab uses Fourier-Transform Infrared (FTIR) analyses to measure dissolved water and carbon in natural and experimental silicate glasses. The lab is equipped with a Thermo Electron Nicolet 6700 FTIR spectrometer and Continuum IR microscope, equipped with automated x-y-z stage and stage purge system so that the spectrometer, microscope, and sample position are all purged with dry air that has <10 ppm CO2 for very precise measurements of CO2 poor glasses. Dedicated polishing facilities are also available for sample preparation.
Isotope Clean Lab (Lassiter)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).
Mineral Physics LabMineral Physics Lab
The Mineral Physics Laboratory has a variety of diamond anvil cells (DACs) and relevant facilities that allow the study of planetary materials (minerals, fluids, glasses, single-crystal and polycrystalline compounds) under under extreme high pressure-temperature conditions. The DACs are integrated with laser and synchrotron X-ray spectroscopic techniques to probe material properties.
Mineral Separation Facility
Includes shatterboxes for sample pulverization, 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.
Paleomagnetic LabPaleomagnetic Lab
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).
Petrographic Microscopes
Micro-scale imaging of rocks using directly observed visible light. Equipment: Low-power stereo microscopes, high resolution low-magnification scanned imaging, transmitted and reflected cross-polarized microscopy, high resolution 3D light microscopy (Edge R400) UV-stimulated fluorescence microscopy, microscope-mounted CL Photomicrography systems for all of these methods, both digital (Polaroid DMC) and conventional film.
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)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.
Thermal Ionization Mass Spectrometry (TIMS) LabThermal 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 (TIMS) Laboratory
Provides precise, conventional U-Pb ages in support of research to both internal and external collaborators (faculty, graduate students and researchers). Equipment: clean laboratory, with 3 laminar-flow HEPA-filtered workstations and related equipment for ultra-clean chemical separation.
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.
X-Ray Diffractometer (XRD)X-Ray Diffractometer (XRD)
Installed in 2008, the Bruker D8 Advance X-Ray Diffractometer (XRD) provides routine, non-quantitative mineral identification in rock powders. The D8 XRD is now driven by automation software with integrated pattern analysis by Bruker EVA and Topas using the ICDD PDF-2 Minerals database. Samples for XRD must be carefully ground rock powders (no gritty lumps) or fine size fractions separated by centrifugation or gravity settling.
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.