Events

April 2021 June 2021
Legend
 JSG  BEG  UTIG  DGS 

Habitability Seminar: Masatoshi Hirabayashi, Auburn University

April, 12 2021

Time: 1:00 PM - 2:00 PM
Location: Zoom Meeting

Contactdavid@oden.utexas.edufor a link to join the live talk.

A seminar from the Center for Planetary Systems Habitability

Title: Small bodies are suppliers, builders, and destroyers of habitability: Understanding their contributions to the lunar surface ice evolution and preventing their impacts on the Earth 

Speaker: Masatoshi Hirabayashi, Assistant Professor, Department of Aerospace Engineering, Department of Geosciences, Auburn University

https://habitability.utexas.edu/events/

Doctoral Defense: Ken Ikeda

April, 12 2021

Time: 8:00 AM - 10:00 AM

Please join the Jackson School of Geosciences for the doctoral defense of \"Frequency-dependent elastic properties of geomaterials: Laboratory experiments and digital rock physics\" by Ken Ikeda.  This research was supervised by Dr. Nicola Tisato with additional committee members including Drs. Mrinal K Sen, Marc A Hesse, Luc L Lavier , Kyle T Spikes and Beatriz Quintal.

UTIG Discussion Hour: Jay Hariharan, Andrew Moodie, and Eric Barefoot

April, 13 2021

Time: 2:00 PM - 3:00 PM
Location: Zoom Meeting

Contactnmccall@utexas.edu for a link to join the live talk. 


Speakers: Jay Hariharan, Andrew Moodie, and Eric Barefoot - UT Cockrell School of Engineering, Rice University

DeFord Lecture: Christine McCarthy

April, 15 2021

Time: 4:00 PM - 5:00 PM

About Dr. Christine McCarthy (Lamont-Doherty Earth Observatory)

Studies the way that micro-features control macro-behavior; how grain and phase boundaries, defect concentration, and partial melt influence the mechanical behavior of terrestrial and planetary materials.

DeFord Lecture Series
Since the 1940\'s, the DeFord (Technical Sessions) lecture series, initially the official venue for disseminating DGS graduate student research, is a forum for lectures by distinguished visitors and members of our community. This is made possible through a series of endowments.

UT Paleontology Seminar: Sarah N. Davis

April, 15 2021

Time: 11:00 AM - 12:00 PM
Location: Contact jamoretti@utexas.edu for Zoom link

Sarah N. Davis (Jackson School of Geosciences, Clarke Lab)

Research Interests: Avian evolution, Avian diversity dynamics, Pigmentation and integumentary structure

UTIG Seminar Series: Lauren Simkins, University of Virginia

April, 16 2021

Time: 10:30 AM - 11:30 AM

Contactcosta@ig.utexas.edufor a link to join the live talk.

Speaker: Lauren Simkins, Assistant Professor, Department of Environmental Sciences, University of Virginia

Host: Ginny Catania

Title: Beyond reconstructions: paleo-perspectives on marine-ice sheet grounding line environments

Abstract: Ice sheets resting on geologic beds below sea level are vulnerable sectors of the cryosphere and have the potential to make rapid and large contributions to future sea-level rise. The stability of marine-based ice sheets is largely dictated by perturbations at or near the grounding line, the downstream most location glacial ice is in contact with the underlying bed – the point where marine and glacial processes converge. The geological record of deglaciated continental shelves extends spatial and temporal perspectives on ice-sheet processes and behavior that transcend the timeframe of modern oceanographic and on-ice and above-ice instrumental observations. Based on geophysical and sedimentological data from deglaciated continental shelves, I will discuss my work on (near) grounding line environments, including channelized meltwater drainage and landform-based approaches to understanding ice-flow and grounding line behavior. The work that I will present highlights the importance of understanding past ice-sheet changes in assessing the stability of contemporary glacial systems – and what the multi-faceted term of stability means in this context.

Dr. Ernst Huenges - GFZ Potsdam

April, 16 2021

Time: 9:00 AM - 10:00 AM

UTIG Discussion Hour: Natalie Wolfenbarger, UTIG

April, 20 2021

Time: 2:00 PM - 3:00 PM
Location: Zoom Meeting

Contactnmccall@utexas.edu for a link to join the live talk. 


Speaker: Natalie Wolfenbarger, Graduate Research Assistant, UTIG

Title: Compositional controls on the distribution of potential habitats within the ice shells of ocean worlds

DeFord Lecture: Christine Chesley

April, 22 2021

Time: 4:00 PM - 5:00 PM

About Dr. Christine Chesley (Lamont Doherty/Columbia University)

Novel EM methods to study crustal and hydrological processes; freshwater resources offshore the NE US, and is also involved in imaging studies of subduction zones. Her work spans a range of processes and settings in areas of growing interest (water resources, subduction hazards)

DeFord Lecture Series
Since the 1940\'s, the DeFord (Technical Sessions) lecture series, initially the official venue for disseminating DGS graduate student research, is a forum for lectures by distinguished visitors and members of our community. This is made possible through a series of endowments.

UT Paleontology Seminar: Oona Takano

April, 22 2021

Time: 11:00 AM - 12:00 PM
Location: Contact jamoretti@utexas.edu for Zoom link

Oona Takano (Deparment of Biology, University of New Mexico)

Research Interests: Late Pleistocene birds, Raptor evolution in North America, Fossil bird communities

UTIG Seminar Series: Tolulope Olugboji, University of Rochester

April, 23 2021

Time: 10:30 AM - 11:30 AM

Contactcosta@ig.utexas.edufor a link to join the live talk.

Speaker: Tolulope Olugboji, University of Rochester

Host: Thorsten Becker

Title: Submarine Exploration of Ocean Basins: Silencing the Singing of Sediments

Talk Flyer and Bio

Abstract: A growing compilation of passive-source seismic surveys reveal a transition across normal oceanic lithospheric plates that is sharp. A simple view of ocean plate formation and evolution where thermal cooling governs with only a confined role for intermittent hotspot/plume activity is challenged by these seismic constraints. In my talk, I discuss how new seismic constraints, i.e., attenuation and age-dependence of a sharp low velocity zone lend support to a subsolidus elastically accommodated grain-boundary sliding (EAGBS) model. While these results are compelling, one challenge often remains when interpreting scattered wave constraints obtained from seafloor stations: the severe ringing of waves trapped in a sediment layer. In my talk (poster), I will describe a technique for silencing the singing of sediments that interfere with conversions from the underside of the oceanic plate. We anticipate that signal processing using our recommended approach will improve scattered wave imaging, especially with amphibious seismic arrays where the water and sediment layer is expected to vary significantly.

Dr. Kimberly Lau - Penn State University

April, 23 2021

Time: 9:00 AM - 10:00 AM

Habitability Seminar: Chenguang Sun, University of Texas at Austin

April, 26 2021

Time: 1:00 PM - 2:00 PM
Location: Zoom Meeting

Contactdavid@oden.utexas.edufor a link to join the live talk.

A seminar from the Center for Planetary Systems Habitability

Title: Magmatic controls on atmosphere oxygenation

Speaker: Chenguang Sun, Assistant Professor, Jackson School of Geosciences, University of Texas at Austin

https://habitability.utexas.edu/events/

UTIG Discussion Hour: Monique Holt, University of Utah

April, 27 2021

Time: 2:00 PM - 3:00 PM
Location: Zoom Meeting

Contactnmccall@utexas.edu for a link to join the live talk. 


Speaker: Monique Holt, University of Utah

DeFord Lecture: Marcelo Leppe

April, 29 2021

Time: 4:00 PM - 5:00 PM

About Dr. Marcelo Leppe (Chilean Antarctic Institute (INACH)

Triassic flora of southwestern Gondwana; study of the connections between South America and Antarctica during the Mesozoic (mainly Cretaceous) and the origin of the southern South American biotas; Chilean representative at Scientific Committee on Antarctic Research (SCAR).

DeFord Lecture Series
Since the 1940\'s, the DeFord (Technical Sessions) lecture series, initially the official venue for disseminating DGS graduate student research, is a forum for lectures by distinguished visitors and members of our community. This is made possible through a series of endowments.

UT Paleontology Seminar: Dr. Daniel Stockli

April, 29 2021

Time: 11:00 AM - 12:00 PM
Location: Contact jamoretti@utexas.edu for Zoom link

Dr. Daniel Stockli (Jackson School of Geosciences, UTChron)

Title: Direct Dating of Fossils by Calcite U-Pb Geochronology and the Impact of Chronostratigraphy.

UTIG Seminar Series: Jennifer Glass, Georgia Institute of Technology

April, 30 2021

Time: 10:30 AM - 11:30 AM

Contactcosta@ig.utexas.edufor a link to join the live talk.

Speaker: Jennifer B. Glass, Georgia Institute of Technology

Host: Cornelia Rasmussen

Title: Microbial interactions with gas clathrates: Implications for planetary habitability


Abstract: At moderate-to-high pressures and low temperatures, water molecules form pseudo-crystalline cages encasing guest gas molecules, most commonly methane, to form solid clathrate phases, also known as gas hydrates. Methane clathrates are likely widespread in our solar system on icy moons, comets, and the Martian subsurface. On Earth, methane clathrates occur beneath permafrost and in sediments underlying continental shelves, where they support vast chemosynthetic communities at cold seeps. Habitability and biosignatures of microbial activity in methane clathrates are relevant for future missions to planets and icy moons that may harbor clathrates (e.g. Mars, Europa, Titan, Enceladus). Gas clathrates are extreme habitats due to low water activity, high salinity, low temperatures, and high pressures, yet multiple studies have revealed the presence of microbial life inside hydrates. Survival strategies used by gas clathrate-inhabiting microbes could provide clues for searching for life beyond Earth. In this talk I will summarize our latest findings of the clathrate-binding properties of proteins native to marine hydrate-bearing sediment microbes from offshore Oregon and Japan. Bacterial clathrate binding proteins caused morphological changes in tetrahydrofuran clathrate (Johnson, Huard et al., 2020, Cryst. Growth Des.) and modulated the stability of methane clathrate in pressure chamber experiments. It is possible that microbes use CBPs as to survive life encased in clathrate, with intriguing implications for subsurface habitability of Mars and other planetary bodies.

Dr. Rolfe D Mandel, Dir. and State Geo., Kansas Geological Survey

April, 30 2021

Time: 9:00 AM - 10:00 AM

UTIG Discussion Hour: Wei Wei, UTIG (PhD Talk)

May, 04 2021

Time: 2:00 PM - 3:00 PM
Location: Zoom Meeting

Contactnmccall@utexas.edu for a link to join the live talk. 


Speaker: Wei Wei, Graduate Research Assistant, UTIG

LEO Seminar Series: Kiara Gomez and Estephania Salgado-Jauregui

May, 05 2021

Time: 1:00 PM - 2:00 PM
Location: Zoom

The purpose of LEO is to create a more inclusive and educated community within the JSG by sharing and listening to each other’s stories. Speakers will interview each other and talk about why they are involved in Diversity, Equity, and Inclusion efforts and the heart behind their work. By learning more about why individuals are involved in DEI, we will broaden our understanding of the impacts the JSG is making on students, faculty, staff, and greater society. Taking initiative to get to know each other, ask questions, and Listen to Each Other is a skill that will propel us further to be leaders in the geosciences.

DeFord Lecture: Dawn Wright

May, 06 2021

Time: 4:00 PM - 5:00 PM

52 Million Points and Counting: A New Stratification Approach for Mapping and Modeling the Ocean

About Dr. Dawn Wright (ESRI)

Chief Scientist of Esri; Seafloor mapping and tectonics, ocean conservation, environmental informatics, and ethics in information technology.

DeFord Lecture Series
Since the 1940\'s, the DeFord (Technical Sessions) lecture series, initially the official venue for disseminating DGS graduate student research, is a forum for lectures by distinguished visitors and members of our community. This is made possible through a series of endowments.

UT Paleontology Seminar: Dr. Melissa Kemp

May, 06 2021

Time: 11:00 AM - 12:00 PM
Location: Contact jamoretti@utexas.edu for Zoom link

Dr. Melissa Kemp (Integrative Biology)

Research Interests: Conservation paleobiology, Evolutionary ecology, Island biogeography, Ancient DNA

Dr. Dara Entekhabi - MIT

May, 07 2021

Time: 9:00 AM - 10:00 AM

Habitability Seminar: Sonia Tikoo-Schantz, Stanford University

May, 10 2021

Time: 1:00 PM - 2:00 PM
Location: Zoom Meeting

Contactdavid@oden.utexas.edufor a link to join the live talk.


A seminar from the Center for Planetary Systems Habitability

Speaker: Sonia Tikoo-Schantz, Stanford University

https://habitability.utexas.edu/events/