As a result of rapid transgression in the Early Cambrian, a sequence of excellent source rock was widely developed in the Lower Cambrian.
寒武系，特别是下寒武统，由于寒武纪初期的快速海侵作用而在研究区域普遍发育烃源岩系；This paper analysed characteristics of organic matter abundance, types, maturity and thickness distribution of the Cambrian source rocks.
本文分析了该区寒武系烃源层的有机质丰度、类型、成熟度及厚度展布特征；The main mountain regions are the Cornish Heights, the Cambrian in Wales, the Cambrian Mountains (in Lake District) and the Pennies.
主山地域是康沃尔高地，寒武系在威尔士，寒武山（在西湖区）和便士。The formation of relatively simple, mainly of Cambrian, Devonian Carboniferous series leaf pond formation, Cretaceous strata.
地层较为简单，主要有寒武系—泥盆石炭系地层、白垩系上统叶塘组地层。Faults and cracks are extremely developed inside the Cambrian folds and can greatly improve Cambrian dolomitite reservoir properties.
寒武系褶皱内幕的断层和裂缝极其发育，大大改善了寒武系白云岩储层物性，有利于油气聚集；The Lower Palaeozoic group mainly includes Cambrian , medial and lower Ordovician, which are marine carbonate in the district.
下古生界包括寒武系和下、中奥陶统，主要由海相碳酸盐岩构成。The transition between the Cambrian and the Ordovician periods is crucial in evolutionary history.
之间的寒武系和奥陶系过渡时期是在进化史上的关键。The argument that the Nyalam Group represents the whole Precambrian strata in the Himalaya area is worth discussing.
因此，认为“聂拉木群”代表喜马拉雅地区全部“前寒武系”是值得商榷的。The Cambrian phosphoric ore is mainly composed of calcic phosphate, carbonate, silica and silicate minerals.
寒武系磷矿主要由钙磷酸盐、碳酸盐、硅质及硅酸盐类等矿物组成。