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November 2019

Van Tuyl Lecture: Mark Diederichs, Queens University

November 21 @ 4:00 pm - 5:00 pm
Berthoud Hall, 1516 Illinois St.
Golden, CO 80401 United States
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Mark Diederichs, Queens University Berthoud 241, 4-5PM Beyond the Equations: A Philosophical Discussion of Time Dependent Excavation Response in Rock Abstract: In geological vocabulary, the term “brittle” is used to describe deformation behaviour in which the rock loses continuity or as the permanent change that occurs in a solid material due to the growth of fractures and/or due to sliding on fractures after the rock stresses exceed some critical value. Ductile behavior, conversely, is inelastic deformation without loss of material…

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December 2019

Weimer Distinguished Lecture: John Grotzinger, California Institute of Technology

December 5 @ 4:00 pm - 5:00 pm
Berthoud Hall, 1516 Illinois St.
Golden, CO 80401 United States
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John Grotzinger

John Grotzinger, California Institute of Technology Berthoud 241, 4-5PM Stratigraphy, Sedimentology, and Diagenesis of a Martian Lacustrine Deposit, Murray Formation, Gale Crater, Mars Abstract: The Mars Science Laboratory Mission’s Curiosity rover landed at Gale crater, Mars, on August 6, 2012. For the past ~6 years Curiosity has been exploring a lacustrine deposit exposed in dissected terrain of crater-interior central mountain.  The lacustrine deposit (Murray fm., >300m thick, early Hesperian age) overlies and is laterally equivalent to fluvial-deltaic deposits of the Bradbury…

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