The Cambrian - Ordovician strata in Luxi Block are very continuous and well exposed.

鲁西地块的寒武 - 奥陶纪地层出露连续,露头较好.

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Dolostone is the main rock type of the Cambrian in this area.

从下寒武统石龙洞组开始都是白云岩沈积.

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Among the multi - oil - generating beds, the Cambrian and Ordovician is the best one.

特别是在盆地内发现的多套生油层系中, 寒武──奥陶系为最佳.

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It holds also one of the most complete successions of the Cambrian strata known in China.

此地同样也是我国寒武系地层出露最完整的地区之一.

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These are two evolutionary stages lithofacies palaeogeography of the Cambrian in South China.

这是两个大不相同的演化阶段.

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This is the first example of internal - wave and internal - tide deposits found in the Cambrian.

笔者对寒武系内波、内潮汐沉积做了首次研究.

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This is the first time in the study and mapping of the Cambrian in South China.

这种定量的岩相古地理图在中国南方寒武纪还是首次出现.

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The Cambrian and Ordovician are important exploration target strata in Leshan - Longnvsi paleo - uplift area.

寒武系和奥陶系是四川盆地乐山 — 龙女寺古隆起区的重要勘探目的层系.

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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.

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Bryozoa was quite diversified in the Ordovician, but lacked fossil records in the Cambrian.

古生物学资料表明,虽然苔藓动物的大多数类群在奥陶纪已经分化出来, 但它在寒武纪却缺乏任何化石记录.

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