See more from this Division: Topical Sessions
See more from this Session: After the Last Ammonite and before the First Horse: Patterns of Ecological and Climatic Change during the Paleocene
Abstract:
A preliminary global survey suggests that these dramatic earliest Tertiary changes aren't limited to North America. The Nanxiong Basin of China shows thicker mudflow deposits directly above boundary. Depositional style eventually returned to emphemeral stream and vertic paleosols development, such as was observed in antecendent Upper Cretaceous deposits.
The K/T boundary in the Vallcebre Basin of the southeastern Pyrenees (Spain) is imprecisely located; nonetheless, K/T deposits preserve a regression maximum that is marked by input of coarse-grained alluvial sediments which record a dramatic change from quiet muddy floodplains to sandy deposition by high-energy currents. This was followed by a period of quiescence and then Cenozoic flooding. These data suggest an interval of higher energy sedimentation and flooding, consistent with increased erosion and downstream flooding arising from ecosystem disruption.
See more from this Division: Topical Sessions
See more from this Session: After the Last Ammonite and before the First Horse: Patterns of Ecological and Climatic Change during the Paleocene