EPSC Abstracts Vol. 8, EPSC2013-476, 2013 European Planetary Science Congress 2013 EEuropeaPn PlanetarSy Science CCongress c Author(s) 2013 Geology and astrobiological implications of Argyre, Mars J.M. Dohm (1), R. El-Maarry (2), R.J. Soare (3), J.-P. Williams (4), S.J. Conway (5), H. Miyamoto (6), and S. Maruyama (1) (1) Earth-Life Science Institute, Tokyo Institute of Technology, Meguro, Tokyo, Japan 152-8551 (
[email protected]), (2) Physikalisches Institut, Bern Universität, Berne, Switzerland 3012, (3) Geography Department, Dawson College, Montreal, Canada H3Z 1A4, (4) Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, (5) Department of Physical Sciences, Open University, Milton Keynes, United Kingdom MK7 6AA, (6) The Museum, The University of Tokyo, Tokyo, Japan 113-003 1. Introduction investigation includes the Argyre floor and rim, transition zone, and the southeast margin of the Thaumasia plateau Using Viking and post-Viking data, the detailed [1]. Also shown is a newly identified paleolake basin (wide geological investigation of the Argyre impact basin arrow) located on the western margin of the Argyre impact and surroundings (30°S to 65°S, 290°E to 340.0°E; basin and the Uzboi drainage system (narrow arrows), Fig.1) has: (1) resulted in a new geologic map of the possible spillway separating the paleolake basin from the region (Fig.2); (2) revealed the stratigraphical history Argyre basin at a present-day topographic interval nearing of the region, including distinct sequence stratigraphy 1.5 km (dashed line), and a transect for topographic profile marking a lake that formed shortly after the Argyre shown in Fig.