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DeFord Lecture: Lisa White
Start:August 27, 2020 at 4:00 pm
End:
August 27, 2020 at 5:00 pm
Location:
https://utexas.zoom.us/j/96604974880
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Paleontology meets social justice: who says we can’t make progress? Examples from new and planned virtual and actual exhibits at the UC Museum of Paleontology
About Dr. Lisa White
Geologist and Director of Education and Outreach at the University of California Museum of Paleontology; Fellow of California Academy of Sciences; mentoring and promoting opportunities for geoscience majors; public outreach has been a major part of her career; Chair of the Geological Society of America Committee on Minorities and Women in the Geosciences; Project Director and PI of the SF-ROCKS (Reaching Out to Communities and Kids with Science in San Francisco) to bring geoscience education to high school students and teachers in San Francisco; Co-PI on the NSF FIELD program (Fieldwork Inspiring Expanded Leadership and Diversity) to create more accessible, culturally sensitive, and inclusive field experiences, particularly for students underrepresented in the geosciences.
DeFord Lecture Series
Since the 1940’s, the DeFord (Technical Sessions) lecture series, initially the official venue for disseminating EPS 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.
UTIG Seminar Series: Ross Parnell-Turner, Scripps Inst. Oceanography
Start:August 28, 2020 at 10:30 am
End:
August 28, 2020 at 11:30 am
Location:
Zoom Meeting
Contact:
Constantino Panagopulos, costa@ig.utexas.edu
Speaker: Ross Parnell-Turner, Scripps Institution of Oceanography, UCSD
Host: Gail Christeson
Title: How to make new seafloor with detachment faults for company
Abstract: At slower-spreading ridges, plate separation is often partly accommodated by slip on long-lived detachment faults, commonly forming corrugated domes called oceanic core complexes. However, the mechanics of this process, and the subsurface structure and connectivity of oceanic detachments, remain uncertain. I will present the results of repeat passive microearthquake surveys conducted in 2014 and 2016 over a pair of oceanic detachments on the Mid-Atlantic Ridge near 13°N. The two ocean bottom seismograph networks provided dense spatial coverage of the two adjacent detachment faults, and the intervening ridge axis. Although both detachments exhibited high levels of seismicity, they are separated by a ~8–10 km wide aseismic zone, indicating that they are mechanically decoupled. Significant changes in the patterns of seismicity between the two surveys are observed implying that stress accumulation and release varies on years-long cycles.
MG&G Field Course Presentation DayMay, 30 2025Time: 10:00 AM - 12:00 PMLocation: ROC 1.603 Each Maymester, the University of Texas Institute for Geophysics (UTIG) offers a field course designed to provide hands-on instruction for graduate and upper-level undergraduate students in the collection and processing of marine geological and geophysical data. The course covers high-resolution air gun and streamer seismic reflection, CHIRP seismic reflection, multibeam bathymetry, sidescan sonar, sediment coring, grab sampling and the sedimentology of resulting seabed samples (e.g., core description, grain size analysis, x-radiography, etc.). Scientific and technical experts in each of the techniques first provide students with several days of classroom instruction. The class then travels to the Gulf Coast for a week of at-sea field work and on-shore lab work. Two small research vessels are used concurrently: one for multibeam bathymetry, sidescan sonar, and sediment sampling, and the other for high-resolution seismic reflection and CHIRP sub-bottom profiling. Students rotate daily between the two vessels and lab work. Upon returning to Austin, students work in teams to integrate data and techniques into a final project that examines the geologic history and/or sedimentary processes as typified by a small area of the Gulf Coast continental shelf. Students spend one week learning interpretation methods using industry-standard, state-of-the-art software (Focus, Landmark, Caris, Fledermaus). On the last day, students present their final project to the class and industry sponsor representatives. |