ordovician

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.

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The Lower Ordovician in Tazhong area is dominated by marine carbonate.

塔里木盆地塔中地区下奥陶统主要为一套海相碳酸盐岩.

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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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Cambrian-Ordovician petroleum system is the most important system type in the northern region of Tarim basin.

寒武系 — 奥陶系源岩含油气系统是塔北地区最重要的一类已知含油气系统.

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The Ordovician lithofacies and biofacies change greatly at different localities of the Yangtze Region, South China.

华南扬子区不同地点奥陶纪的岩相 、 生物相变化显著.

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This was the result from the large-scale regression in the Late Ordovician.

这是晚奥陶世晚期大规模海退的结果.

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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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Marine volcanics of Early Ordovician was found in Zhifang region.

摘要纸房地区具有早奥陶世海相火山岩存在.

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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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NOTES ON THE GENUS REEDOCALYMENE KOBAYASHI, 1951 ( TRILOBITA, ORDOVICIAN )

论奥陶纪三叶虫属ReedocalymeneKobayashi, 1951 ( 英文 )

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There is abundant karst fissure water in the limestone and dolomite of Cambrian and Ordovician.

寒武系、奥陶系地层主要为灰岩和白云岩,其间赋存有较丰富的岩溶裂隙水.

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The main reservoir types in Ordovician carbonate formation in Tahe Oilfield are dissolution fractures and caves.

塔河油田奥陶系碳酸盐岩地层的主要储集空间为溶蚀缝、洞.

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A rift trough along Mianxian-Lueyang ophiolitic melange belt was formed from Ordovician to Silurian.

奥陶纪—志留纪大致沿勉略构造带形成南秦岭裂陷槽.

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Study shows that the Ordovician carbonate formation in this area characteristic of very low groundmass porosity.

明确了研究区奥陶系储层为超低基质孔的致密碳酸盐岩,岩溶作用为本区储层发育的主控因素.

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The Tahe reservoir Ordovician carbonate rock belongs to the type reservoir that this is special.

塔河油田奥陶系碳酸盐岩属于该特殊类型油藏.

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