| 秦巴地区古生代构造特征分析 |
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| 引用本文： | 周廷梅.秦巴地区古生代构造特征分析[J].地球科学与环境学报,1990(1). |
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| 作者姓名： | 周廷梅 |
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| 作者单位： | 西安地质学院地勘系 |
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| 摘 要： | 秦巴地区的构造单元若按习惯以五条深断层带为界划分成四个褶皱带,就使早古生代构造特征显得模糊不清。但若以下部构造层的特征为依据,以靖口关—丹凤—商南断裂带为界,划分为南北两个构造单元,就显得十分明晰。在早古生代推覆构造的控制下,晚古生代使南部构造单元中形成山间槽,发育了泥盆系层控铅锌矿床。
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| 关 键 词： | 古生代构造 山间槽 推覆构造 秦巴地区 |
AN ANALYSIS OF THE TECTONIC FEATURES OF THE PALAEOZOIC ERA IN THE QINBA AREA |
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| Zhou Tingmei.AN ANALYSIS OF THE TECTONIC FEATURES OF THE PALAEOZOIC ERA IN THE QINBA AREA[J].Journal of Earth Sciences and Environment,1990(1). |
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| Authors: | Zhou Tingmei |
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| Institution: | Xi'an College of Geology |
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| Abstract: | The Qinba tectonic units have been conventionally divided into the Qinling earth's axis, the Hercynian fold belt, the Indo-China fold belt and the Caledonian fold from the north to the sorth, and each of their boundaries has been under the control of the five big faults. However, according to the tectonic features of the Palaeozoic Era and the fundamental tectonic patterns, the Qinba area may be divided into the northern and the southern big tectonic units by the boundaries of the Jingkouguan-Danfeng-Shangnan faults.The fundamental rock strata of the northern area are the middle and lower Proterozoic groups of the Huabei type, and the fundamental rock strata of the southern area are the Proterozoic group-lower Palaeozoic group. The Qinba nappe tectonic during the early Palaeoz-. oic Era played an important role in developing the tectonics of this area, and it controlled the features of the early Palaeozoic tectonics. The middle Qinling moutain trenches in the later Palaeozoic Era were controlling the Devonian stratabound Pb, Zn ore deposits.As compared with the typical stratabound Pb, Zn ore deposits, the stratabound Pb, Zn ore deposits in this area are of some exceptional features. |
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| Keywords: | the Qinba area tectonic in Palaeozoic Era moutain trench nappe tectonic |
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