lower cambrian epoch 早寒武世
lower cambrian stratigraphy 早寒武世地层
cambrian-lower ordovician 寒武系下奥陶统
cambrian lower ordovician 寒武系下奥陶统
cambrian and lower ordovician 寒武系至下奥陶统
The Sedimentary cover is constituted by the carbonate rocks in lower Cambrian-middle Devonian-Clastic Rock which overlies disconformably the lower the transitional basement.
盖层由平行不整合于过渡性基底之上的下寒武统-中泥盆统碳酸盐岩-碎屑岩系构成。
参考来源 - 南秦岭构造带旬阳—神河一带地质构造特征·2,447,543篇论文数据，部分数据来源于NoteExpress
Luoquan Formation is a diachronous unit from Sinian to Lower Cambrian.
罗圈组为一穿时地层单位，时代为震旦纪—早寒武世。
The paper mainly studies the sedimentology and geochemistry of the source rocks of lower Cambrian Niutitang Formation in Songlin Zunyi area of Guizhou province.
本文主要研究了贵州遵义松林地区的寒武系牛蹄塘组下部烃源岩的沉积学及地球化学特征。
Vertically, 3sets of source rocks including the Lower Cambrian, the Middle-o-Upper Ordovician-Lower Silurian and the Permian were developed in Chinese Paleozoic Marine basins.
研究认为中国古生代海相盆地在纵向上主要发育下寒武统、中上奥陶统—下志留统和二叠系3套烃源岩。
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