论文部分内容阅读
自1976年Schlanger和Jenkyns提出“大洋缺氧事件”(oceanic anoxic events)模式用于解释中白垩世全球性分布的富有机质的黑色页岩的成因以来,黑色页岩和大洋缺氧事件成为地学研究热点之一,并先后在许多地区得到广泛证实.但这次事件是否波及到特提斯喜马拉雅地区,迄今一无所知,而且,缺氧事件形成的沉积物被认为是世界上最好的烃源岩,随着青藏高原地区油气勘探工作的进一步深入,也有必要进行黑色页岩及其成因的研究,以了解特提斯喜马拉雅地区中新生代地层的生烃潜力.特提斯喜马拉雅地区中白垩世Cenomanian-Turonian期主要发育一套泥质岩类.岗巴地区泥岩类表现出两种牲征的岩
Since 1976, when Schlanger and Jenkyns proposed the “oceanic anoxic events” model to explain the origin of organic-rich black shales that were globally distributed in the Middle Cretaceous, the black shale and oceanic hypoxia events became geosciences One of the hot spots and has been widely confirmed in many areas successively.But whether this incident spreads to the Tethys Himalayas has so far been unknown and the sediments formed by anoxic events are considered as the best hydrocarbons in the world Source rock, with further exploration of oil and gas in the Qinghai-Tibet Plateau, it is also necessary to study the black shale and its genesis to understand the hydrocarbon generation potential of Mesozoic-Cenozoic strata in the Tethys Himalayas. Cenomanian-Turonian Cenozoic mainly developed a set of argillaceous.Gamba area mudstone shows two kinds of rocks