Sedimentary and Environmental Changes through the Triassic-Jurassic Transition in the Eastern Sichuan Basin
G13 Understanding Mass Extinctions and Environmental Changes through Geological Time: Causes and EffectsThe Late Triassic (237~201Ma) is a critical period with active geological processes in the history of “Deeptime Earth”. Based on the Triassic-Jurassic strata exposed in Sichuan Basin and environs, we have reconstructed the evolutionary history of the sedimentary environments. More than ten subfacies of five sedimentary system are recognized. The meander river, delta and lake sedimentary systems are widely distributed in Sichuan Basin. The alluvial fan and braided river sedimentary systems are restricted near the source area. The Indosinian Tectonic Movement is the primary factor for the changes in the sedimentary environments. Changes in climatic conditions and lake level also have a certain influence to the changes.
Late TriassicSichuan Basinsedimentary environmentIndosinian Movement
Affiliations
- College of Palaeontology, Shenyang Normal University, China
- The Key Laboratory of Mine Geological Prevention of Anhui Province, School of Earth and
- Environment, Anhui University of Science and Technology, China
- Institute of Sedimentary Geology, Chengdu University of Technology, China
- Chengdu Natural History Museum & The Museum of Chengdu University of Technology, China
- Zhejiang Institute of Geosciences, China
- Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, China