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| 江西及广东北部中生代晚期地层层序和时代—兼论《江西省岩石地层》中存在的问题 | |
| 引用本文： | 巫建华,周维勋,等.江西及广东北部中生代晚期地层层序和时代—兼论《江西省岩石地层》中存在的问题[J].地质论评,2002,48(1):44-53. |
| 作者姓名： | 巫建华 周维勋 |
| 作者单位： | 1. 南京大学地球科学系,210093;华东地质学院,江西抚州,34400O 2. 华东地质学院,江西抚州,34400O 3. 南京大学地球科学系,210093 |
| 摘 要： | 根据地层发育程度和沉积特征,以萍乡－广丰深断裂和三南－寻乌深断裂为界,江西及广东北部中生代晚期可划分为北、中、南三个地层区。根据不整合面和岩石组合特征,以群级岩石地层单位与火山旋回或沉积旋回相对应为原则,北区可划分出火把山群和圭峰群,中区可划分出武夷群、罗塘群或版石群和圭峰群,南区可划分出余田群、版石群或罗塘群。根据岩性岩相特征,以组级岩石地层单位与复合岩相或沉积岩相相对应为原则,余田群可划分为水头迳组和菖蒲组,武夷群划分为双峰岭组、鹅湖岭组和石溪组,版石群划分为合水组和优胜组,罗塘群划分为白埠组、周田组和邓家组,火把山群划分为丘家组、天台山组、冷水坞组和周家店组,圭峰群划分为河口组、塘边组和莲荷组。根据同位素年龄数据和化石资料,余田群的地质时代属中侏罗世;武夷群主体属晚侏罗世,顶部石溪组跨入早白垩世;罗塘群或版石群属早白垩世晚期－晚白垩世早期;火把山群属早白垩世,圭峰群属晚白垩世晚期。 |
| 关 键 词： | 岩石地层 地质时代 中生代晚期 江西 广东 不整合面 沉积旋回 |
Stratigraphical Sequence and Geochronology of the Late Mesozoic Era in Jiangxi Province and Northern Guangdong Province |
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| WU Jianhu,ZHOU Weixun,ZHANG Bangtong.Stratigraphical Sequence and Geochronology of the Late Mesozoic Era in Jiangxi Province and Northern Guangdong Province[J].Geological Review,2002,48(1):44-53. | |
| Authors: | WU Jianhu ZHOU Weixun ZHANG Bangtong |
| Institution: | WU Jianhu,ZHOU Weixun,ZHANG Bangtong Department of Earth Sciences,Nanjing University,Nanjing,East China College of Geology,Fuzhou,Jiangxi |
| Abstract: | Based on the unconformity and rock association and the plan that "Group" corresponds to the volcanic cycles or sedimentary cycles, the late Mesozoic volcano - sedimentary rock series in Jiangxi province and northern Guangdong Province can be subdivided into the Yutian Group, Wuyi Group, Banshi Group or Luotang Group, Huobashan Group and Guifeng Group. According to the lithology and lithofacies and the plan that "Formation" corresponds to the complex lithofacies or sedimentary lithofacies, the Yutian Group can be subdivided into the Shuitoujing Formation and Changpu Formation; the Wuyi Group into Shuangfengling Formation, Ehuling Formation and Shixi Formation; the Banshi Group into Heshui Formation and Yousheng Formation; the Luotang Group into the Baibu Formation, Zhoutian Formation and Dengjia Formation; the Huobashan Group into the Qiujia Formation, Tiantaishan Formation, Lengshuiwu Formation and Zhoujiadian Formation; and the Guifeng Group into the Hekou Formation and Tangbian Formation and Lianhe Formation. Fossil data and isotopic ages show that the Yutian Group belongs to the Middle Jurassic, the Wuyi Group to Late Jurassic- early Early Cretaceous, Luotang Group and Banshi Group to late Early Cretaceous-early Late Cretaceous, Guifeng Group to late Late Cretaceous. |
| Keywords: | Lithostratigraphy Geochronology Late Mesozoic Jiangxi Province northern Guangdong Province |
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