Enhancements of Himalayan and Tibetan Erosion and the Produced Organic Carbon Burial in Distal Tropical Marginal Seas During the Quaternary Glacial Periods: An Integration of Sedimentary Records

The Himalayan and Tibetan highlands (mountains), with high rates of physical erosion, are extreme settings for earth surface processes, generating one the largest recent terrigenous detritus organic carbon discharges to ocean. However, their significance respect global climate cycles during Quaternary is still unclear, especially in quantitative terms. Here, we present comprehensive records continental erosion weathering, terrestrial supply, marine productivity, burial distal Arabian Sea, Bay Bengal, southern South China Sea since ∼700 ka over orbital timescales. These exhibit periodicities corresponding sea level Indian summer monsoon intensity changes. During glacial periods, enhanced highland activation deep-sea channels significantly increased inputs detritus, nutrients, into whereas strengthened shelf weathering matter preservation occurred Sea. Conclusively, our integrative proxies study area demonstrate, first time, pronounced pulses (∼1.12 × 1012 mol/yr), dominantly originating from productivity. Together silicate on exposed tropical shelves volcanic arcs, flux marginal seas, therefore, highlights large contributions that regions can make within glacial-interglacial inventory ocean atmosphere thus cause significant negative feedback climate.