Silurian

From the Early Silurian large scale of retrogression had begun accompanying the Late Caledonian movement.

晚加里东运动(始于早志留世)发生了大规模的海退.

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The contact relationship between Silurian and Devonian is parallel unconformity.

泥盆系与志留系之间为平行不整合接触.

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Sq 1 , Sq 4, Sq 10 are three favorableexploratory sequence of the Silurian and Devonian in Tarim basin.

Sq1 、 Sq4、Sq10是塔里木盆地志留-泥盆系的三个有利勘探层序.

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THE RETZIELLIDAE ( SILURIAN RIBBED IMPUNCTATE ATHYRIDIDINE BRACHIOPODS )

论志留纪的小莱采贝类——具壳线、无疹无窗贝族(腕足动物 )

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Porphyry mineralization, occurred in the Silurian Period, finally formed ore bodies.

晚期矿化发生于志留纪, 使矿床最终形成.

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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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It changed to ancient land due vertical movement in the end of the Silurian.

南秦岭在早古生代是扬子板块的被动大陆边缘,在志留纪末曾因垂向隆升变为古陆.

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Silurian System in Tarim Basin is distributed in an area of about 23.

塔里木盆地志留系分布面积约23.

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The discovery of the Silurian - Devonian oil and gas reservoir reveals a good exploration prospect.

塔里木盆地志留 - 泥盆系油气藏的发现,展示了志留-泥盆系良好的勘探潜力.

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The hydrocarbon generation content in Lower Cambrian and Lower Silurian is up to 60 % ～80 % of total.

原始生烃量以下古生界为主,下寒武统和下志留统的生烃量约占总生烃量的60%～80%.

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