| 东秦岭的地球物理、构造分带特征及演化 |
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| 引用本文： | 李文勇,夏斌,路文芬.东秦岭的地球物理、构造分带特征及演化[J].地质与勘探,2004,40(1):36-40. |
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| 作者姓名： | 李文勇 夏斌 路文芬 |
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| 作者单位： | 1. 中国科学院广州地球化学研究所,广州,510640
2. 广州海洋地质调查局,广州,510760 |
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| 摘 要： | 东秦岭构造演化及地质成矿比较复杂,在认识上还存在分歧.笔者从板块构造学、地球物理学、事件地层学等多学科观点出发,提出了一些新的看法.东秦岭发育的区域性深大断裂主要有9条,它们均具有多期次、长期性活动的特征;垂直板缘构造带走向,从北向南可划分出低变质变形带、强变质变形混杂带、刘岭复理石推褶构造带、大别地块、断褶推滑构造带等五个地质构造带;东秦岭的地质构造发展演化经历了7个阶段,即华北、杨子板块形成、漂移阶段;华南板块形成阶段;板缘增生带形成阶段;板块对接阶段;剪切走滑阶段;板块挤压推覆阶段以及断块掀斜阶段.
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| 关 键 词： | 构造演化 构造分带 区域性深大断裂 地球物理 东秦岭 |
| 文章编号： | 0495-5331(2004)01-0036-05 |
| 修稿时间： | 2003年3月19日 |
GEOPHYSICAL, TECTONIC ZONING CHARACTER AND EVOLUTION IN EASTERN QINLING |
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| LI Wen-yong,XIA Bin,LU Wen-fen.GEOPHYSICAL, TECTONIC ZONING CHARACTER AND EVOLUTION IN EASTERN QINLING[J].Geology and Prospecting,2004,40(1):36-40. |
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| Authors: | LI Wen-yong XIA Bin LU Wen-fen |
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| Institution: | LI Wen-yong~1,XIA Bin~1,LU Wen-fen~2 |
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| Abstract: | The structural evolution and geological mineralization in the eastern Qinling area are very complicated on which many geologists have cognitive divergence. This paper puts forward some new opinions from a multidisciplinary point of view such as plate tectonics, geophysics and event stratigraphy, et al. It is recognized that there are mainly 9 regional abyssal faults in east Qinling with the features of poly-phase and long-term activity. The east Qinling orogen can be divided into 5 geological structural belts vertical to the strike of plate-boundary tectonic zone from north to south like low metamorphic-deformational belt, strong metamorphic-deformational belt, Liuling flysch overriding-fold belt, Dabie massif and fracture-fold overriding-slip belt. The area has undergone 7 evolution stages: forming and drift of north China plate and Yangtze plate, forming of south China plate, forming of plate-boundary accreting zone, plate collision and link, shear strike slip, compressive nappe and block tilted. |
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| Keywords: | tectonic evolution tectonic zoning regional abyssal fault geophysical character eastern Qinling |
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