T4.C04 Early Cretaceous climate variations and its impact on paleoecology and paleoenvironmental developments

In contrast to the classical interpretation of the Cretaceous as the blue-print of greenhouse climate, increasing evidence is found for certain cold intervals in this period. Widespread occurrence of glendonites and diamictites in high-latitudes of the northern hemisphere and other geochemical proxies indicate intervals of severe climatic cooling (restricted glaciation?) in the Early Cretaceous (Valanginian, Aptian). Recently similar records are found in the southern hemisphere also, giving evidence for intermittent global climatic changes from the very Early Cretaceous (Valanginian) on. These climatic variations have had a significant impact on the paleoecological and paleoenvironmental development of this time.

The focus of this session is to improve the record of climatic changes within the Early Cretaceous and the understanding of the interaction between these paleoclimatic variations and the response from paleoecology and paleoenvironmental development. This includes a wide range of topics from paleontology, biodiversity, sedimentology, sequence stratigraphy, sea-level changes and geochemistry, focused on paleo-temperature reconstructions, sea-level variations, the development of sedimentary systems just as the evolution of life in the Early Cretaceous.


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10th International Symposium on the Cretaceous System | Universitätsring 1  | 1010 Wien