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Wednesday
January 28th, 2014
7:00-8:30 PM

Schlafly Bottleworks, Maplewood, MO

Early Mars: Warm, Wet, and Habitable

James S. McDonnell Distinguished University Professor
Department of Earth and Planetary Sciences

Moderated by: Cynthia Wichelman, M.D.


Raymond E. Arvidson, Ph.D.

Analysis of remote sensing and in situ data collected by Mars orbiters and the rovers Spirit, Opportunity and Curiosity show that during early Martian history, the planet supported rivers, alluvial fans, deltas, lakes and playas. Steam-charged volcanic explosions were common, with consequent deposition of ash, together with aqueous alteration in hydrothermal systems. Impact events produced craters and liberated ground water, leading to extensive alteration of rim and wall rocks. Many of these ancient environments would have been habitable for microbial systems. The presentation will include an overview of evidence for warm, wet conditions, and focus on a few examples for which orbital and rover-based observations have been used to generate detailed models for ancient warm, wet, and habitable conditions.

Science On Tap highlighted on St. Louis Public Radio and Voice of America!

Science On Tap is a place where, for the price of a beverage, anyone can come to explore the latest ideas in science and technology. Meetings take place outside a traditional academic context, in the Crown Room at Schlafly Bottleworks.


Meetings are held on the last Wednesday of the month during the academic year, usually from 7:00 - 8:30 PM. The standard format is as follows: about 45 minutes of presentation, followed by discussion until 8:30 PM. Seating is limited to the first 100 people.  No reservations accepted.

Crown Room at the Schlafly Bottleworks
7260 Southwest Ave.
Maplewood, MO 63143
(314) 241-2337

Register to receive e-mail announcements of future Science On Tap events.

Interested in learning about medicine? Check out Washington University's Mini-Medical School!

For more information: e-mail scienceontap@wustl.edu
or call (314) 935-9495

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