middle-ordovician的意思|示意

The correlation between oil and source proved that the preserved commercial oil reservoirs of Marine origin in the Tarim basin are mainly generated from the marl of the Middle Upper Ordovician.

油源对比证实：盆地目前保存下来的海相成因工业性油藏，主要来源于中上奥陶统泥灰岩。

The main water source is fracture-karst water in Middle Ordovician carbonate rocks.

主要的供水水源为中奥陶统碳酸盐类岩石中的裂隙-喀斯特水。

This is the first time in the study and mapping of the Middle and Late Ordovician in South China.

这种定量的岩相古地理图在我国南方中及晚奥陶世还是首次出现。

In early Ordovician North Qilian region again stretched and suffered second oceanization, up to middle Ordovician a mature ocean basin with a trough-arc-basin system already formed.

早奥陶世北祁连地区再次拉张，遭受第二次大洋化，到中奥陶世形成具沟弧盆体系的成熟大洋。

Karst water from Middle Ordovician limestone can induce the most dangerous water hazards menacing mine safety.

中奥陶统灰岩岩溶水对煤矿安全威胁最大。

The Guozhuang Spring exposed in the Middle Ordovician limestone is one of complete-drainage and of erosion structure of ascending type.

郭庄泉为一全排型、侵蚀—构造上升泉，出露于中奥陶纪灰岩中。