黑料网

Abstract

The Late Triassic period in the Sichuan Basin, Southwest China, is marked by significant tectonic and paleogeographic changes, which are crucial for understanding the region’s geological evolution. This paper presents insights derived from sedimentary facies and provenance analyses of the Xujiahe Formation, shedding light on the tectonic and paleogeographic dynamics during this time. Sedimentary facies analysis reveals diverse depositional environments, including fluvial plains and lacustrine settings, reflecting the basin’s dynamic evolution. Provenance analysis, focusing on detrital mineral assemblages and isotopic signatures, provides valuable constraints on sediment sources and transport pathways, elucidating tectonic events that influenced basin development. Integration of these analyses offers a comprehensive understanding of Late Triassic tectonic processes, including subsidence, uplift, and basin infilling, and their implications for paleogeographic reconstructions. This study underscores the importance of interdisciplinary approaches in deciphering Earth’s geological history and highlights the Sichuan Basin as a key geological archive for understanding Late Triassic tectonic-paleogeographic evolution.