Quantifying Himalayan Erosion Fluxes from the Bengal fan record

喜马拉雅是世界上构造和气候相互作用显著的地区之一。自印度-亚洲碰撞以来，喜马拉雅山的挖掘与亚洲季风相互作用，产生了地球上最强烈的侵蚀通量之一。如果构造明显地推动了季风，那么它通过控制侵蚀的强度和分布反过来作用于山脉结构。喜马拉雅山脉的侵蚀最终导致了全球大气中二氧化碳压力的降低，而这正是渐新世冰川形成的原因。然而，新近纪这些过程的直接沉积记录基本上是未被探索的或有限的，不足以进行定量研究。该项目建立在IODP考察队354的基础上，该考察队在孟加拉扇8°N的样带进行了取样。通过综合地震地层学和孟加拉扇构造、地质年代学和地球化学的多学科方法，本项目旨在量化喜马拉雅地区新近纪和第四纪的侵蚀通量。

The Himalaya is one region of the world where tectonic and climate interact dramatically. Since the India-Asia collision, the exhumation of the Himalayas has interacted with the Asian monsoon to generate one of the most intense erosion fluxes on Earth. If tectonic clearly forces the monsoon, it acts in turn on the mountain chain structure by controlling the intensity and distribution of erosion. Himalayan erosion finally contributes to the global reduction in atmospheric CO2 pressure responsible for the Oligocene glaciation. However, the direct sedimentary records of these processes during the Neogene are essentially unexplored or limited and inadequate for quantitative approaches. This project builds on IODP Expedition 354 which cored at transect at 8°N in the Bengal Fan. Through a multidisciplinary approach combining synthesis of seismic stratigraphy and architecture of the Bengal Fan, geochronology and geochemistry, this project is designed to quantify Himalayan erosion fluxes during Neogene and Quaternary.