早侏罗世Toarcian期大洋缺氧事件（TOAE）是中生代发生的一次剧烈的环境扰动事件，伴随着快速升温，是研究地质历史时期全球快速升温事件的典型案例。近年来的研究表明TOAE期间出现了丰富的风暴沉积，被认为是快速升温引起热带气旋活动增强的结果，这极大提升了对Toarcian早期快速升温期间水文循环的认识。然而，这些记录主要集中在北半球西特提斯，且都是定性研究，风暴沉积对快速升温的准确响应过程仍不清楚。本项目拟以特提斯喜马拉雅巴基斯坦和中国藏南Toarcian期地层为研究对象，运用地层学、沉积学、岩石学、生物年代学、地球化学等方法，准确厘定TOAE事件层位，查明风暴沉积和碳同位素扰动的准确耦合关系、风暴沉积频率在TOAE期间的变化以及在空间上的变化规律。结合古纬度资料，探讨热带气旋活动对快速升温的响应过程以及纬度上的变化规律，进而深化认识极端温室气候条件下地球表层系统水文循环的变化。

The Early Jurassic Toarcian Oceanic Anoxic Event (TOAE) was a severe environmental perturbation event in the Mesozoic. It was accompanied by rapid warming, which is a typical case for studying rapid global warming events in the geological history. Recent researches show that abundant storm deposits are present during the TOAE interval, which were considered to be resulted from enhanced tropical cyclone activities caused by rapid warming. This greatly improved the understanding of the hydrological cycle during the rapid warming of the early Toarcian. However, these records are mainly from the western Tethys of the northern hemisphere and qualitative studies, and the accurate response of storm deposits to rapid warming still remains unclear. In this project, an integrated studies of stratigraphy, sedimentology, petrology, biochronology, and geochemistry will be carried out on the Toarcian strata of Pakistan and southern Tibet (China) in the Tethys Himalaya to accurately confirm the TOAE position, coupling relationship between storm deposits and carbon-isotope perturbation, as well as the frequency change of storm deposits during the TOAE and the change rule in space. Combined the palaeolatitudinal data, we will discuss the responses of tropical cyclone activity and the change rule in latitude during the rapid warming, which will greatly improve our understanding in changes of hydrological cycle in earth surface system during the extreme greenhouse climate.