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首页> 外文期刊>Journal of China University of Geosciences >New Evidence for Eastward Extension of Late Hercynian — Early Indosinian Qinling Sea
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New Evidence for Eastward Extension of Late Hercynian — Early Indosinian Qinling Sea

机译：海西晚期—东印度洋秦岭海向东扩展的新证据

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摘要

The problem of the eastward extension of Qinling sea of Late Hercynian — Early Indosinian has always been in suspension. The present paper makes an assumption that the Qinling rock-group should be a tectonic complex consisting of complicated structural slices of different ages according to the new discovery of radiolarias and other faunas in the Yanlinggou rock-formation in the area around eastern Qinling-Tongbai Mountains. The discovery of the Early Triassic radiolarias in Tongbai Mountain and the analysis of the paleogeography of the Yangtze and North China plate margins indicate the existence of eastern Qinling-Tongbai-Dabie sea of Late Hercynian —Early Indosinian , which is considered to be the eastward extension of the western Qinling rift trough. The rift trough was closed by the convergent collision between the Yangtze and North China plates in Middle to Late Triassic.
机译：海西晚期的秦岭海-东印度支那早期一直向东延伸的问题一直悬而未决。根据秦岭-桐柏山脉东部地区延陵沟岩层的放射虫和其他动物区系的新发现，本文认为秦岭岩群应为由不同年龄的复杂构造片组成的构造复合体。 。桐柏山早三叠世放射虫的发现以及扬子和华北板块边缘的古地理分析表明，晚海西—印度支那早期的秦岭—桐柏—大别海存在，被认为是东延。西秦岭裂谷。在三叠纪中晚期，长江和华北板块之间的汇聚碰撞封闭了裂谷。

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