Paper No. 203-11
Presentation Time: 11:00 AM
GEOLOGIC HISTORY OF THE TERRA CIMMERIA PROVINCE OF MARS: COULD THESE ANCIENT DEPOSITS BE RECORDED IN THE PEACE VALLIS FAN DEPOSITS OF GALE CRATER?
Pre-Tharsis (>~4.0 Ga) tectonism resulted in a dynamic phase of major deformation, which is recorded in the oldest geological provinces on Mars. These ancient provinces include Terra Sirenum, Terra Cimmeria, and the Thaumasia Highlands in the cratered southern highlands. Contrasting with Terra Sirenum and Terra Cimmeria provinces, defined by prominent structurally-controlled basins, highly degraded massifs with well-defined valley networks dissecting their flanks, elemental signatures distinct from the younger geologic provinces, and remanent magnetic anomalies, the Thaumasia Highlands is a mountain range about the length of the Himalayas formed largely through major crustal shortening and contractional deformation. At this conference, we will present on the pre-Tharsis geologic history of the Terra Cimmeria province, since its >~4.0 Ga basement and basin deposits may have contributed to the felsic-rich alluvial fan deposits of Peace Vallis identified by the Curiosity rover within Gale Crater.