The Carnian Pluvial Episode in the Sichuan Basin (China)
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Relatore: Prof. Xin Jin, Chengdu University of Technology, China
Titolo: The Carnian Pluvial Episode in the Sichuan Basin (China)
Contenuti: The Carnian Pluvial Episode (CPE) was a remarkable global climatic event that occurred approximately 234 million years ago during the Late Triassic. This event was characterized by increased humidity and enhanced runoff, leading to enhanced input of terrigenous material into sedimentary basins. Beyond its impact on sedimentation, the CPE is also marked by multiple negative shifts in the carbon isotopes record, the development of dysaerobic to anoxic conditions, and significant biotic turnover or extinction. The profound changes in global ecosystems during this period have been widely documented and are largely attributed to the eruption of the Wrangellia Large Igneous Province. In the Sichuan Basin (China), the CPE was first reported as the "Carnian black shale event." This designation stemmed from the collapse of the Carnian carbonate platform and the subsequent deposition of black shales in the western Sichuan Basin. Since then, considerable debate has surrounded the interpretation of this event, particularly in terms of its age determination. In this presentation, I will introduce our research group's findings alongside those of others, highlighting our perspectives on the CPE. We will also discuss ongoing debates and explore future research directions of this event within the Sichuan Basin and beyond.
Luogo:
Aula C, Palazzina C
Promotore:
Marco Franceschi
Ultimo aggiornamento: 07-03-2025 - 11:03