| 中朝地台的中奥陶统—下石炭统及其古地理和构造含意 |
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| 引用本文： | 安太庠,马文璞.中朝地台的中奥陶统—下石炭统及其古地理和构造含意[J].地球科学,1993(6). |
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| 作者姓名： | 安太庠 马文璞 |
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| 作者单位： | 北京大学，中国地质大学 北京 |
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| 摘 要： | 华北地台是我国最大的早前寒武纪克拉通,一般认为其演化史中一个显著的特征是早奥陶世末到中石炭世初存在着巨大的沉积间断,但是近来的研究表明,地台外缘仍发育着上述间断期间的地层,从而可据此揭示出该时期地台的地史经历、大陆边缘的位置和性质,早古生代期间地台内部主要受南部被动大陆边缘的影响,海水源自古秦岭洋,朝鲜半岛上的所谓“临津江带”不宜与秦岭造山带对比,鄂尔多斯盆地西缘大陆边缘的确定,提示早古生代时阿拉善地块可能不属于中朝地台,周边大陆边缘的存在表明中朝地台是一个完整的陆块,不象是与杨子陆块来自统一的“中国地台”。
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| 关 键 词： | 中朝地台 中奥陶统-下石炭统 朝鲜半岛 |
MIDDLE ORDOVICIAN-LOWER CARBONIFEROUS OF SINO-KOREAN PLATFORM AND ITS PALEOGEOGRAPHY AND STRUCTURAL SIGNIFICANCE |
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| An Taixiang.MIDDLE ORDOVICIAN-LOWER CARBONIFEROUS OF SINO-KOREAN PLATFORM AND ITS PALEOGEOGRAPHY AND STRUCTURAL SIGNIFICANCE[J].Earth Science-Journal of China University of Geosciences,1993(6). |
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| Authors: | An Taixiang |
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| Abstract: | The Sino-Korean Platform is the largest Early Precambrian Craton in East Asia. It was widely accepted that the platform lacks all the strata from the Middle Ordovician to the Lower Carboniferous. However, the strata are discovered recently on the edge of the Sino-Korean Platform, some of which (the Middle and Upper Ordovician in the west of North China , for instance) are continentally marginal deposit. The Paleozoic on the platform has the same deposit nature and has integrate evolutionary tendency. This indicates that the platform is a complete continent instead of pieces of continental blocks. In the Early Paleozoic, the interior of the Sino-Korean Platform was mainly affected by the passive continental margin from the south and the seawater came from the Paleo-Qinling Ocean, while the Devonian seawater of Korea came from the east. In Carboniferous Period, because of the percussion between the Sino-Korean Platform and the Siberian Plateform, the seawater was forced towards the south. It is not appropriate to compare the so called"Limjingang Zone"on the Korean Pennin-sular with the Qinling Orogenic Zone. The confirmation of the continental margin in the west edge of the Ordos Basin shows that the Alashan Block was not a part of the Sino-Korean Platform in the Early Paleozoic. Extensive continental margin around the periphery of the Sino-Korea Platform indicate it is a integrated block, it seems unlikely that Sino-Korea and Yangtze Blocks originated from a united "China Platform |
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| Keywords: | Sino-Korean platform Middle Ordovician-Lower Carboniferous Korean penninsular |
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