| 吕梁山——华北克拉通中部中生代基底卷入褶皱系统 |
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| 引用本文： | 张北航,张进,曲军峰,赵衡,王艳楠,李锦轶,牛鹏飞,赵硕,郑荣国,李岩峰,云龙,张义平,惠洁.吕梁山——华北克拉通中部中生代基底卷入褶皱系统[J].地球科学,2021,46(7):2423-2448. |
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| 作者姓名： | 张北航 张进 曲军峰 赵衡 王艳楠 李锦轶 牛鹏飞 赵硕 郑荣国 李岩峰 云龙 张义平 惠洁 |
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| 作者单位： | 中国地质科学院地质研究所,北京 100037;河北工程大学地球科学与工程学院,河北邯郸 056038;中国地震应急搜救中心,北京 100049;核工业北京地质研究院,北京 100029;中国地质科学院,北京 100037;中国科学院大学地球与行星科学学院,北京 100049 |
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| 基金项目： | 中国地质科学院基本科研业务费YYMF201604 |
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| 摘 要： | 位于华北克拉通中部的吕梁山的形成代表了华北克拉通在晚侏罗世-早白垩世的挤压变形事件，为了更好地理解该期变形的样式、时代、机制和背景，对吕梁山地区开展了详细的野外调查，同时搜集了前人的低温热年代学工作.结果表明，吕梁山是一个中生代期间形成的发育有典型单褶（monocline）构造的陆内基底卷入型大型褶皱系统.早前寒武纪造山作用在基底中形成早期面理（片麻理、片理、劈理以及节理），这些面理在后期近东西向挤压作用下再次活动形成了基底断裂，并导致了上覆沉积地层褶皱变形，吕梁山不同地区褶皱的古应力场方向总体为SE（122°）~NW（302°）.吕梁山单褶构造的构造样式、形成机制以及分布，与北美西部的Laramide造山带中的厚皮构造相似，形成的构造环境也类似.吕梁山褶皱及其单褶构造总体形成于晚侏罗世期间古太平洋板块向西低角度俯冲的环境中，该期俯冲也导致了华北克拉通同期陆内挤压变形.
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| 关 键 词： | 吕梁山 Laramide 厚皮构造 华北克拉通 中生代 单褶 构造地质学 |
| 收稿时间： | 2020-08-07 |
Lüliangshan:A Mesozoic Basement Involved Fold System in the Central North China Craton |
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| Zhang Beihang,Zhang Jin,Qu Junfeng,Zhao Heng,Wang Yannan,Li Jinyi,Niu Pengfei,Zhao Shuo,Zheng Rongguo,Li Yanfeng,Yun Long,Zhang Yiping,Hui Jie.Lüliangshan:A Mesozoic Basement Involved Fold System in the Central North China Craton[J].Earth Science-Journal of China University of Geosciences,2021,46(7):2423-2448. |
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| Authors: | Zhang Beihang Zhang Jin Qu Junfeng Zhao Heng Wang Yannan Li Jinyi Niu Pengfei Zhao Shuo Zheng Rongguo Li Yanfeng Yun Long Zhang Yiping Hui Jie |
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| Abstract: | The formation of the Lüliangshan located in the central North China Craton (NCC) is the result of the contraction event in the Late Jurassic-Early Cretaceous. In order to better understand the style, mechanism, background, and time of this deformation, a detailed field survey has been carried out in Lüliangshan area. The previous work of low temperature thermochronology has been collected. The results show that the Lüliangshan is a large basement involved fold system with typical monocline formed in Mesozoic in NCC. The existing foliations (i.e., gneissosity, schistosity, cleavage and joint) in the basement of the Precambrian orogenic belt in the central NCC reactivated to cause the folding of the overlying sedimentary layers during the later east-west shortening. The direction of shortening which resulted in the basement involved folds in the Lüliangshan is uniform across the entire mountain range, i.e., SE (122°)-NW (302°) compression. The mechanism, styles and distributions of monoclines in the Lüliangshan are similar to monoclines in the Laramide orogenic belt in the western North America. The folds including most monoclines in the Lüliangshan were formed in the Late Jurassic and caused by lower-angle subduction of the Paleo-Pacific Plate westwards, which also resulted in the intraplate contraction deformation of the NCC. |
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