| 湖南芙蓉锡矿的地质地球化学特征及找矿意义 |
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| 引用本文： | 王登红,陈毓川,李华芹,陈正宏,余金杰,路远发,李寄嵎.湖南芙蓉锡矿的地质地球化学特征及找矿意义[J].地质通报,2003,22(1):50-56. |
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| 作者姓名： | 王登红 陈毓川 李华芹 陈正宏 余金杰 路远发 李寄嵎 |
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| 作者单位： | 江西省地质调查院,江西,南昌,向塘,330201 |
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| 基金项目： | 1∶25万景德镇市幅、上饶市幅、南昌市幅区域地质调查项目(编号:20001300002091) |
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| 摘 要： | 珍珠山群是发育在扬子板块与华夏板块拼接带东段之婺源－乐平地区的一套中元古代蓟县纪变质深海浊积岩－火山岩组合，自下而上可进一步划分为佛子坑组，鄣山组，周溪组，中洲组，火山活动呈现由弱－强－弱的演化规律，岩石化学特征反映其大地构造环境属火山岛弧或活动边缘盆地，其层位与弧后盆地双桥山群修水组，溪口群，弧间盆地诸家群，铜厂岩群，张村岩群，火山岛弧双溪坞群相当，但岩性组合差异甚大，属同时异相产物，它们共同构成扬子陆缘的双列岛弧造山带模式，是中元古代末华夏板块与扬子板俯冲－碰撞造山的结果，珍珠山群的建立，为华南中元古代板块碰撞提供了新的证据。
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| 关 键 词： | 珍珠山群 中元古界 地层对比 婺源－乐平地区 江西 板块碰撞 |
| 文章编号： | 1671-2552(2003)01-0032-11 |
| 修稿时间： | 1/5/2002 12:00:00 AM |
Further studies of Cyrtograptus robustus |
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| WANG Jian,MENG Yong,WANG Xin,HUANG Hong-ping,FU Li-pu,ZHANG Xin.Further studies of Cyrtograptus robustus[J].Geologcal Bulletin OF China,2003,22(1):50-56. |
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| Authors: | WANG Jian MENG Yong WANG Xin HUANG Hong-ping FU Li-pu ZHANG Xin |
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| Abstract: | The Zhenzhushan Group consists of a suite of Mesoproterozoic J ix ianian metamorphosed abyssal turbidite and volcanic rocks in the eastern segment of the convergence zone between the Yangtze plate and the Cathaysian plate in the Wuyuan-Leping areas,northern Jiangxi.From below upward it can be further divided into the Fuzikeng Formation,Zhangshan Formation,Zhouxi Formation and Zhongzhou Formation.Volcanism shows the trend of evolutions from weak to st rong and again to weak.The petro-chemical characteristics suggest that the tec tonic environment belongs to the volcanic island arc or active marginal basin and that the group is stratigraphically equivalent to the Xiushui Formation of the Shuangqiaoshan Group and the Xikou Group in a back-arc basin,the Zhujia Group,Tongchang Group-complex and Zhangcun Group-complex in an inter-arc bas in and the Shuangxiwu Group in a volcanic is-land arc,but they differ greatl y in rock association.They are synchronous but heteropic products.They combi ne to form a double-island arc orogenic belt model on the Yangtze continental m argin.It is the re-sult of subduction-collisional orogeny of the Cathaysian plate and Yangtze plate at the end of the Meso-proterozoic.The establishment of the Zhenzhushan Group provides new evidence for Mesoproterozoic plate col lision in South China. |
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| Keywords: | establishment of the Zhenzhushan Group Mes oproterozoic stratigraphic correlation Wuyuan-Leping areas northeast Jiangxi |
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