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Paleoenvironmnetal Reconstruction on Ancient Earth and Mars (SETI Talks)

SETI Institute

Tuesday, April 21, 2015 from 12:00 PM to 1:00 PM (PDT)

Paleoenvironmnetal Reconstruction on Ancient Earth and...

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Event Details

Tom Bristow, SETI Institute

Clay minerals often form at or near rocky planetary surfaces under low temperature hydrous conditions.  Careful identification of the types of clay minerals and consideration of their geological context can yield information on ancient environmental conditions, including inferences of atmospheric composition.  However, this task is complicated by multiple potential sources of clays and overprinting by subsequent diagenetic or hydrothermal processes.  Dr Bristow will discuss approaches to paleoenvironmental interpretation of clay mineral-bearing sedimentary rocks with a focus on recent findings from the Mars Science Laboratory (MSL) rover Curiosity.  MSL’s discovery of clay minerals in ancient lake sediments at Yellowknife Bay is critical evidence of habitable conditions in the past.  Determination of the origins of the clay minerals at Yellowknife Bay provides constraints on the longevity of aqueous conditions, redox state within sediments, and potential chemical energy sources for organisms.

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When & Where


SETI Institute
189 N Bernardo Ave
Mountain View, CA 94043

Tuesday, April 21, 2015 from 12:00 PM to 1:00 PM (PDT)


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Organizer

SETI Institute

The mission of the SETI Institute is to explore, understand and explain the origin, nature and prevalence of life in the universe.

We believe we are conducting the most profound search in human history — to know our beginnings and our place among the stars.

The SETI Institute is a nonprofit corporation founded in 1984 (California Corporation #1261957). The Institute is a scientific and educational organization governed by the provisions of Section 501(c)(3) of the U.S. Internal Revenue Code, and the Institute's Federal identification number for reporting and tax purposes is 94-2951356.

The Institute welcomes support from private foundations or other groups/individuals interested in SETI. Each funded effort (135 separate multi-year projects funded since 1984) is supervised by a principal investigator who is responsible to the Board of Trustees for the conduct of the activity.

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Presenting Sponsor (2016): Leonard Tramiel

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Paleoenvironmnetal Reconstruction on Ancient Earth and Mars (SETI Talks)
Mountain View, CA Events Seminar Science & Tech

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