Trends and Transitions in Silicate Weathering in the Asian Interior (NE Tibet) Since 53 Ma

The relationship between silicate weathering, Tibetan Plateau uplift, and global cooling during the Cenozoic provides a valuable case study for understanding interaction of tectonics climate. uplift is considered to have caused via atmospheric CO 2 drawdown by increased weathering. However, this hypothesis has been intensively debated over past few decades due lack complete weathering records from continental interior, which can directly track effects on We provide first long (past 53 Myr) record NE Plateau, combined with comprehensive analysis its evolution pattern, critical transitions, associated driving forces. intensity in Tibet characterized long-term Paleogene decrease, modulated cooling, Neogene increase that may be related East Asian summer monsoon (EASM) intensification. Three major system transitions regional are identified at ?26–23 Ma, ?16 Ma ?8 linked enhanced EASM forced primarily tectonic these intervals, some surbordinate influences climate Ma. also capture an intensification 100-kyr cycle obtained record, coincidence time enhancement EASM. This might suggest contribution Antarctic ice sheets modulating timescale 10 5 –10 6 years, through as proposed previous studies.