Spatiotemporal glacier retreat on the Tibetan Plateau since the LGM_G to early holocene based on compilation of moraine boulder ages.

ABSTRACT: Tibetan Plateau and its surrounding mountains (TPSM) have experienced prominent glacier retreat since the Global Last Glacial Maximum, while the detailed deglaciation process remains unclear. To investigate the spatiotemporal pattern of the glacier retreat history, we compiled 196 moraines dating from 26.5 to 10 ka based on 994 boulder ¹⁰Be exposure age from seven regions on the TPSM and calculated the separated component Gaussians of moraine ages. The result shows that synchronous glacier retreat across the entire TPSM began around 22 ka in response to onset of rising local summer insolation. Moraine abandonment centered at five stages, i.e., 22-20, 19-18 ka, 17-16, 14.5-12.9, and 11.6-10 ka. Synchronous retreat occurred at 22-20 ka and 14.5-12.9 ka in all seven regions, while

SUBMITTER: Zheng C 

PROVIDER: S-EPMC11779949 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature