元古代地层已成为全球油气资源新的增长点和接替领域，其烃源岩分布规律研究对油气资源及勘探潜力预测尤其重要。但由于元古代的生物、海洋和地质环境与显生宙显著不同，如何认识和预测元古代烃源岩的发育规模，需要地质学、地球化学、地层学和古海洋学等多学科的交叉研究。本项目以有机质生产-有机质富集-烃源岩发育为主线，对中国元古代海相烃源岩形成的古构造、古气候、古海洋化学和古生态环境等开展基础研究。通过对串岭沟组、下马岭组、大塘坡组和陡山沱组等4套富有机质页岩段的精细地球化学解剖，探讨不同大气海洋环境和不同地质生物事件背景下影响原始生产力和有机质埋存的关键因素，获取天文旋回、气候旋回与古老烃源岩发育之间的关联性证据，明确我国元古代烃源岩形成的内在机制，建立元古代烃源岩发育模式并预测其时空分布，为寻找新的油气勘探目标、在深层/古老地层获得新的油气发现提供科学依据，丰富和发展海相有机质富集和烃源岩形成理论。

The Proterozoic strata has become a new increasing point and relay area of global oil and gas resources, so the distribution rule of the marine source rocks plays an vital role in predicting the oil and gas exploration in Proterozoic strata. However, how to understand the developmental mechanisms and controlling factors of Proterozoic source rocks needs interdisciplinary researches of geology, geochemistry, stratigraphy and paleoceanography, since Proterozoic and Phanerozoic are not analogous in terms of primary productivity and depositional environment. This project will focus on the main line of the organic productivity - organic matter enrichment - source rocks formation, and carry out basic research of tectonic and climatic, and pale-oceanographic and paleo-ecologic characteristics of the source rocks in the Northern China and Southern China. This research will carry out detailed geochemical studies of four representative profiles, including the Chuanlinggou Formation, the Xiamaling Formation, the Datangpo Formation and the Doushantuo Formation, to explicit the controlling factor of primary productivity, explore the effect of ocean chemistry on organic productivity and sedimentation, ascertain the strong relevant evidences of astronomical cycle and climate cycle with the formation of source rocks, and then construct the developmental mechanism of Proterozoic source rocks to predict their spatial and scale distribution. The purpose of this project is providing a scientific basis for the evaluation of ancient strata or deep field oil and gas potential resource, and develop the theories of marine organic accumulation and source rocks formation.