| A Preliminary Report on Yong''''anpu Tectonic Window in Suizhong County, Western Liaoning Province |
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| 引用本文： | 汪洋,姬广义. A Preliminary Report on Yong''''anpu Tectonic Window in Suizhong County, Western Liaoning Province[J]. 中国地质大学学报(英文版), 2006, 17(3) |
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| 作者姓名： | 汪洋 姬广义 |
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| 作者单位： | Key Laboratory of Isotope Geochronology and Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences School of Earth Sciences and Resources China University of Geosciences Beijing 100083 China，Geological Institute of Beijing Municipality，Guangzhou 510640 China，Beijing 100011 China |
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| 基金项目： | This paper is financially supported by the National Natural Science Foundation of China (Nos .40572128 ,40376013 ,40104003) . |
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| 摘 要： | Several thrust faults have been mapped in theYanshan belt ,as the thrust structure was first iden-tified by Wong (1928) (Ji et al .,2005 ; Wang et al .,2005a ;Davis et al .,2001 ,1998 ; Yang et al .,2001 ;Zheng et al ., 2000 ; Chen, 1998 ; Zhang et al .,1986 ; He ,1957 ;Chern and Hsiung,1935) .Becausethe Archean basement was widely involved in thethrust systemof the Yanshan belt ,domestic popularrecognition emphasized the thick-skinned characteris-tics and li mited horizontal displacement…
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A Preliminary Report on Yong''''anpu Tectonic Window in Suizhong County, Western Liaoning Province |
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| Wang Yang,Ji Guangyi. A Preliminary Report on Yong''''anpu Tectonic Window in Suizhong County, Western Liaoning Province[J]. Journal of China University of Geosciences, 2006, 17(3) |
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| Authors: | Wang Yang Ji Guangyi |
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| Abstract: | For understanding the Mesozoic tectonics of Yanshan (燕山) belt, the authors took geological mapping in the belt. A large-scale thrust structure was identified in Yong'anpu (永安堡)area, in the western part of Suizhong (绥中 ) County, Liaoning (辽宁 ) Province during our recent mapping in the Yanshan belt. The hanging wall of the thrust was composed of Archean gneiss and the overlying Early Cretaceous Zhangjiakou (张家口 ) Formation; meanwhile, the strongly ductile deformed volcanic rocks of Zhangjiakou Formation comprised the footwall in Yonganpu tectonic window. This discovery indicates the existence of strongly contractional deformation in the Yanshan belt after the eruption of Early Cretaceous Zhangjiakou volcanic rocks. On the basis of mapping and research, it is concluded that the published official geological maps have failed to identify the major structural features of the Yanshan belt. |
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| Keywords: | thrust structure refolding structural mapping Early Cretaceous Yong'anpu. |
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