Monsoonal imprint on late Quaternary landscapes of the Rub' al Khali Desert.

ABSTRACT: Abundant geomorphological, biological, and isotopic records show that Arabia repeatedly underwent significant climate-driven environmental changes during late Quaternary humid periods. Precisely mapping how the enhancement and expansion of the African Monsoon during these humid periods have affected landscape evolution and human occupation dynamics in Arabia remains a scientific challenge. Here we reconstruct an ancient water-sculpted landscape consisting of lake and river deposits, coupled with a large outlet valley in the Rub' al Khali Desert of Saudi Arabia. During the peak of the Holocene Humid Period or before, intense rainfall reactivated alluvial floodplains and filled a ~1100 km² topographic depression, which eventually breached, carving a deep ~150 km-long valley. Coupling geologi

SUBMITTER: Zaki AS 

PROVIDER: S-EPMC11968403 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature