Title: Mesozoic Basin Deformation of Yanshan Folded Fault Belt—Records of the Intraplate Deformation Process: A Case Study of Xiabancheng, Chengde—Shangbancheng and Beitai Basins
Abstract:This paper discusses the evolution of Mesozoic intraplate orogenesis on the basis of sedimentary records and deformational analysis of three-generation Mesozoic basins in Xiabancheng and Chengde area ...This paper discusses the evolution of Mesozoic intraplate orogenesis on the basis of sedimentary records and deformational analysis of three-generation Mesozoic basins in Xiabancheng and Chengde area of Yanshan folded fault belt. Three Mesozoic basins are from old to young Triassic—Middle Jurassic Xiabancheng basin, late Middle Jurassic—Late Jurassic Chengde—Shangbancheng basin and Early Cretaceous Beitai basin, with their sedimentary sequence composed of three regional Mesozoic structure layers. Xiabancheng basin is a reversed syncline with its sedimentary sequence composed of fluvial alluviation facies; Chengde—Shangbancheng basin is a dissymmetric syncline with its sedimentary sequence composed of volcanic alluviation facies; Beitai basin is a trapped syncline with its sedimentary sequence composed of volcanic sedimentary facies. The deformation of three-generation Mesozoic basins is inconsistent, respectively belonging to different tectonic layers of complicated deformation in their original places, and the older strata of complicated fold deformation are obviously covered by the new basin. Two regional angular unconformities separating the three tectonic layers are before 160 Ma and before 135 Ma in age, corresponding to“Unconformity A” and “Unconformity B” episodes of regional Yanshanian movement.Read More
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
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Cited By Count: 3
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