巴基斯坦侏罗纪-白垩纪和白垩纪-古近纪的过渡与中生代脊椎动物

M. S. Malkani
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引用次数: 5

摘要

在巴基斯坦发现了侏罗纪-白垩纪(J/K)和白垩纪-古近系(K/Pg)的边界/过渡,尤其是在印巴板块(冈瓦纳大陆的一部分)的西部大陆边缘,如Kirthar、Sulaiman、Kohat和Potwar盆地。其岩性在横向和纵向上都是可变的。J/K和K/Pg转换由陆地和海洋地层表示,如红土、铝土矿、不同颜色的页岩、砂岩和砾岩以及罕见的石灰岩层。到目前为止发现的中生代脊椎动物属于始祖龙类,如蜥脚类、兽脚类、中真龙类、翼龙类、蛇类和鸟类。
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Jurassic-Cretaceous and Cretaceous-Paleogene Transitions and Mesozoic Vertebrates from Pakistan
The Jurassic-Cretaceous (J/K) and Cretaceous-Paleogene (K/Pg) boundaries/transitions are found in Pakistan especially well exposed on the western continental margin of the Indo-Pakistan plate (part of Gondwana) like Kirthar, Sulaiman and Kohat and Potwar basins. Its lithology is variable both lateral and also vertical. The J/K and K/Pg transitions are represented by terrestrial and marine strata like laterite, bauxite, vary colored shale, sandstones and conglomerates and rare limestone beds. Mesozoic vertebrates found so far belong to archosaurs like poripuchian titanosaurs (sauropods), theropods, mesoeucrocodiles, pterosaurs, snake and bird are briefly overviewed here.
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