Sedimentary response to the paleogeographic and tectonic evolution of the southern North China Craton during the late Paleozoic and Mesozoic
Sedimentary response to the paleogeographic and tectonic evolution of the southern North China Craton during the late Paleozoic and Mesozoic
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华北克拉通南部晚古生代和中生代古地理和构造演化的沉积响应
DOI：
10.1016/j.gr.2017.06.009
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发表时间：
2017-09
影响因子：
6.1
通讯作者：
Wang Feng
中科院分区：
文献类型：
--
作者：
Yang De-Bin;Yang Hao-Tian;Shi Jiang-Peng;Xu Wen-Liang;Wang Feng
为探讨南华北地区晚古生代-中生代古地理和构造演化受周边板块的影响，对洛阳盆地和登封地区10个上古生界-中生代沉积物样品进行了碎屑锆石U-Pb和Hf同位素研究。从太原组、下石盒子组、上石盒子组、石千峰组、二马营组、上油坊庄组、上侏罗统无名组和下白垩统无名组（从最老到最新）获得了上古生界至中生代地层样品。根据最年轻锆石年龄，结合时代诊断化石和火山夹层，提出太原组为早二叠世的下石盒子组（276 Ma），中晚二叠世的上石盒子组（376 Ma）和石千峰组（279 Ma），晚三叠世的二马营群（232 Ma）和上油坊庄组（230和210 Ma），晚侏罗世的侏罗系无名组（154 Ma），早白垩世的白垩系无名组（158 Ma）。结合前人的研究结果，认为：（1）上石炭统-下二叠统砂岩的物质来源于北方秦岭造山带（NQO），（2）下二叠统砂岩的物质主要来自NCC北方边缘的阴山-燕山造山带（YYOB），只有少量来自NQO的物质;（3）中-上二叠统砂岩主要来自NQO，只有少量来自YYOB：（4）上三叠统砂岩主要来自YYOB，只有少量来自NQO;（5）上侏罗统砂岩的物质来源于NQO;下白垩统砾岩主要由早期碎屑再循环形成，研究区上石炭统-中生界沉积物的物源转换表明YYOB曾经历过两次强烈隆升，首先与早二叠世古亚洲洋板块俯冲到华北克拉通北方边缘之下有关，随后与晚三叠世蒙古板块南部与华北克拉通北方边缘碰撞有关。南昆奥陶系的三次构造隆升可能分别与晚石炭世-早二叠世、中晚二叠世和晚侏罗世的南北秦岭碰撞、勉略洋板块向北俯冲以及扬子板块与华北克拉通南缘的碰撞有关。早白垩世，华北克拉通中心南缘快速隆升和剥蚀。
With the aim of constraining the influence of the surrounding plates on the Late Paleozoic–Mesozoic paleogeographic and tectonic evolution of the southern North China Craton (NCC), we undertook new U–Pb and Hf isotope data for detrital zircons obtained from ten samples of upper Paleozoic to Mesozoic sediments in the Luoyang Basin and Dengfeng area. Samples of upper Paleozoic to Mesozoic strata were obtained from the Taiyuan, Xiashihezi, Shangshihezi, Shiqianfeng, Ermaying, Shangyoufangzhuang, Upper Jurassic unnamed, and Lower Cretaceous unnamed formations (from oldest to youngest). On the basis of the youngest zircon ages, combined with the age-diagnostic fossils, and volcanic interlayer, we propose that the Taiyuan Formation (youngest zircon age of 439 Ma) formed during the Late Carboniferous and Early Permian, the Xiashihezi Formation (276 Ma) during the Early Permian, the Shangshihezi (376 Ma) and Shiqianfeng (279 Ma) formations during the Middle–Late Permian, the Ermaying Group (232 Ma) and Shangyoufangzhuang Formation (230 and 210 Ma) during the Late Triassic, the Jurassic unnamed formation (154 Ma) during the Late Jurassic, and the Cretaceous unnamed formation (158 Ma) during the Early Cretaceous. These results, together with previously published data, indicate that: (1) Upper Carboniferous–Lower Permian sandstones were sourced from the Northern Qinling Orogen (NQO); (2) Lower Permian sandstones were formed mainly from material derived from the Yinshan–Yanshan Orogenic Belt (YYOB) on the northern margin of the NCC with only minor material from the NQO; (3) Middle–Upper Permian sandstones were derived primarily from the NQO, with only a small contribution from the YYOB; (4) Upper Triassic sandstones were sourced mainly from the YYOB and contain only minor amounts of material from the NQO; (5) Upper Jurassic sandstones were derived from material sourced from the NQO; and (6) Lower Cretaceous conglomerate was formed mainly from recycled earlier detritus.The provenance shift in the Upper Carboniferous–Mesozoic sediments within the study area indicates that the YYOB was strongly uplifted twice, first in relation to subduction of the Paleo-Asian Ocean Plate beneath the northern margin of the NCC during the Early Permian, and subsequently in relation to collision between the southern Mongolian Plate and the northern margin of the NCC during the Late Triassic. The three episodes of tectonic uplift of the NQO were probably related to collision between the North and South Qinling terranes, northward subduction of the Mianlue Ocean Plate, and collision between the Yangtze Craton and the southern margin of the NCC during the Late Carboniferous–Early Permian, Middle–Late Permian, and Late Jurassic, respectively. The southern margin of the central NCC was rapidly uplifted and eroded during the Early Cretaceous.
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影响因子：
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DOI：
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发表时间：
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期刊：
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DOI：
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发表时间：
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期刊：
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