| 桐城桐山－庐江大化下古生界飞来峰及其地质意义 |
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| 引用本文： | 汪来利，刘贻灿，石永红.桐城桐山－庐江大化下古生界飞来峰及其地质意义[J].安徽地质,1994(Z1). |
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| 作者姓名： | 汪来利，刘贻灿，石永红 |
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| 作者单位： | 安徽省地质科学研究所 |
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| 摘 要： | 桐城桐山－庐江大化的飞来峰位于早白垩世杨湾组（Ｋ＿１ｙ）弱变形的紫红色陆相碎屑岩之上，由下古生界的硅化粗晶灰岩，白云质灰岩及硅质岩组成，岩层强烈碎裂。其中伴生的张裂隙及剪切石香肠指示岩层由南东向北西逆冲。这一飞来峰的形成与郊庐断裂南段平移作用产生的次级逆冲有关。是由此产生的推覆体差异剥蚀的结果，这种次级逆冲推覆作用发生在扬子板块前陆褶冲带的变形之后。
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| 关 键 词： | 郯庐断裂南段，逆冲推覆，飞来峰，桐城－庐江地区 |
THE LOWER PALAEOZOIC KLIPPE IN TONGSHAN, ONGCHENG-DAHUA, LUJIANG AND ITS GEOLOGICAL SIGNIFICANCE |
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| Jiang Laili; Liu Yican; Shi Yonghing.THE LOWER PALAEOZOIC KLIPPE IN TONGSHAN, ONGCHENG-DAHUA, LUJIANG AND ITS GEOLOGICAL SIGNIFICANCE[J].Geology of Anhui,1994(Z1). |
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| Authors: | Jiang Laili; Liu Yican; Shi Yonghing |
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| Institution: | Anhui Institute of Geological Science |
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| Abstract: | The klippe in Tongshan, Tongcheng-Dahua, Lujiang, lying on the early Cretaceous weakly deformed purplish red continental clastic rocks, consists of lower Paleozoic silicated sparry limestone, dolomitic limestone and sili-calite. The strongly fractured layers overthrust from southeast to northwest, which is proved through tensile fractures and boudins in the layers. It is concluded that the formation of the klippe is related to the secondary overthrust caused by thehorrizontal displacement of the south section of Tancheng -Lujiang fault after the deformation of the foreland foldedthrust zone of the Yangtze plate and the klippe results from differential denudation of the nappe. |
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| Keywords: | south section of the Tancheng - Lujiang fault overthrust klippe Tongcheng-Lujiang area |
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