| 江南古陆中元古代地层的划分与对比 |
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| 引用本文： | 徐有华,;吴新华,;楼法生.江南古陆中元古代地层的划分与对比[J].火山地质与矿产,2008(1):1-11. |
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| 作者姓名： | 徐有华 ;吴新华 ;楼法生 |
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| 作者单位： | [1]中国地质大学（北京）地球科学与资源学院,北京100083; [2]江西应用技术职业学院,江西赣州341000; [3]江西省地质调查研究院,江西南昌330030 |
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| 摘 要： | 江南古陆是扬子板块与华夏板块长期活动拼贴而成，构造极为复杂，地层的划分与对比也是众说纷纭。通过对江南古陆的变质岩的研究，认为江南古陆大地构造可划分三个Ⅰ级构造地层区：扬子地层区、江南古陆地层区及华夏地层区。江南古陆地层区又可进一步划分Ⅱ级构造地层区5个（宜丰-景德镇-歙县构造地层分区、万年构造地层分区、赣东北构造地层分区、怀玉构造地层分区及丰城-鹰潭-龙游构造地层分区）；各构造地层分区之间以构造（蛇绿）混杂岩亚带或韧性剪切带相拼接。双桥山群及周潭岩群仅分别分布在扬子地层区修水-祁门分区及华夏地层区北武夷地层分区内，而且是一套史密斯地层。而江南古陆内则发育非史密斯地层。
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| 关 键 词： | 中元古代地层 划分与对比 江南古陆 |
Division and correlation of the Middle Proterozoic strata in Jiangnan Old Land |
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| Institution: | XU You-hua, WE Xin-hua ,LOU Fa-shen ( 1 China University of Geoseiences ,Beijing 100083, China;2 Jiangxi College of Applied Technology, Ganzhou341000 , China;3 Jiangxi Institute of Geological Survey ,Nanchang330030 , China ) |
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| Abstract: | Jiangnan Old Land with very complex structure is formed by long-term activities and jointing of Yangtze plate and Cathaysian plate, thus its stratigraphic division and correlation can not come to an unanimous conclusion. According to the study of the metamorphic rocks in the Jiangnan Old Land, the Jiangnan Old Land can be divided into three first-order tectonostratigraphic regions： Yangtze stratigraphic region,Jiangnan Old Land stratigraphic region and Cathaysian stratigraphic region. The Jiangnan Old Land stratigraphic region itself can be further divided into 5 second-order tectonostratigraphic subregions （Yifeng-Jingdezhen-Xixian County tectonostratigraphic subregion, Wannian tectonostratigraphic subregion, northeastern Jiangxi tectonostratigraphic subregion ,Huaiyu tectonostratigraphic subregion and Fengcheng-Yingtan-Longyou tectonostratigraphic subregion ）;these tectono stratigraphic subregions are jointed by tectonic （ophiolite） melange belts or ductile shear zones. Shuangqiaoshan Group and Zhoutan Group are only distributed in Xiushui- Qimen subregion of the Yangtze stratigraphic region and the North Wuyi subregion of the Cathaysian stratigraphic region respectively, and they belong to a suite of Smith strata. Non-Smith strata are developed in the Jiangnan Old Land. |
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| Keywords: | Middle Proterozoic strata division and correlation Jiangnan Old Land |
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