Geological and Geochemical Characteristics and Petrogenesis of the Mafic Rocks from Zhangyuan, Northern Jiangnan Orogen

Abstract

Abstract:

Zhangyuan mafic rocks of NE-SW trend are distributed along the Yaoli-Zhangyuan-Jiangtan line in the northern slope of Zhanggong Mountain, between Anhui and Jiangxi provinces. They occur as structural shivers and fragments in flysch matrix textured by Neoproterozoic volcano-fine clastic rocks of continental margin, and overall display characteristics of tectonic melange belt. Mafic fragments include altered pillow-block basic lava, gabbro, dolerite, etc, which were concomitant in space since the Neoproterozoic. By analyzing geological and geochemical characteristics of the Zhangyuan mafic rocks, their origin is considered to be in a small, slow expansion oceanic basin spreading ridge of the continental margin environment, with the features of primitive oceanic crust mafic rocks. It is proposed that Zhangyuan mafic rocks belong to westward extension of Fuchuan ophiolite in Southern Anhui province.

Key words: northern Jiangnan orogen, Neoproterozoic, mafic rocks, geology and geochemistry, petrogenesis

CLC Number:

P588.124

ZHANG Yan-Jie, ZHOU Xiao-Hua, LIAO Sheng-Bing, TU Ming-Gang, JIANG Ren, JIANG Yang. Geological and Geochemical Characteristics and Petrogenesis of the Mafic Rocks from Zhangyuan, Northern Jiangnan Orogen[J]. J4, 2011, 17(3): 393-.

References

程光华, 汪应庚. 2000, 江南东段构造格架
[J]. 安徽地质, 10 (1): 1-8.
邓国辉, 刘春根, 冯晔. 2005. 赣东北—皖南元古代造山带构造格架
及演化
[J].地球学报, 26 (1)：9-16.
丁炳华, 史仁灯, 支霞臣, 等. 2008. 江南造山带存在新元古代(～850
Ma)俯冲作用——来自皖南SSZ型蛇绿岩锆石SHRIMP U-Pb年
龄证据
[J]. 岩石矿物学杂志, 27(5): 375-388.
高林志, 杨明桂, 丁孝忠, 等. 2008. 华南双桥山群和河上镇群凝灰岩
中的锆石SHRIMP锆石U-Pb年龄 ——南新元古代造山带演化
的制约
[J]. 地质通报, 27(10): 1744-1751.
高林志, 张传恒, 刘鹏举, 等. 2009. 华北—江南地区中、新元古代地
层格架的再认识
[J]. 地球学报, 30(4): 433-446.
李曙光. 1993. 蛇绿岩生成构造环境的Ba-Th-Nb-La判别图
[J]. 岩石
学报, 9(2): 146-157.
李献华, McCulloch. M T. 1996. 扬子南缘沉积岩的Nd同位素演化及
其大地构造意义
[J]. 岩石学报, 12 (3): 361-368.
马荣生, 王爱国. 1994. 皖南晚元古代碰撞造山带构造轮廓
[J]. 安徽
地质, 4(2): 14-22.
舒良树, 施央申, 郭令智, 等. 1995. 江南中段板块-地体构造与碰撞
造山运动学
[M]. 南京: 南京大学出版社.
吴新华, 楼法生, 刘春根. 2005.皖赣相邻区中元古代溪口岩群的划
分与对比
[J]. 资源调查与环境, (2): 86-96.
王希斌, 郝梓国. 1994. 中国造山带蛇绿岩的时空分布及构造类型
[J].
中国区域地质, 3: 193-204.
徐备 . 1990. 论赣东北—皖南晚元古代沟弧盆体系
[J]. 地质学报, 1:
33-41.
徐备 , 郭令智, 施央申. 1992. 皖浙赣地区元古代地体和多期碰撞造
山带
[M]. 北京: 地质出版社.
徐有华, 吴新华, 楼法生. 2008.江南古陆中元古代地层的划分与对
比
[J]. 资源调查与环境, 29(1): 1-11.
杨明桂, 吴安国, 钟南昌. 1988. 华南中晚元古代地层划分、沉积建
造及其地壳构造演化. 江西地质, 2(2): 112-121.
于津海, 魏振海, 王丽娟, 等. 2006. 华夏地块：一个有古老物质组成
的年轻陆块
[J]. 高校地质学报, 12 (4): 440-447.
余心起, 江来利, 许卫, 等. 2007. 皖浙赣断裂带的界定及其基本特征

[J]. 地学前缘, 14(3):102-113.
周新民, 邹海波, 扬杰东. 1989. 安徽歙县伏川蛇绿岩套的Sm-Nd等
时线年龄及其地质意义
[J]. 科学通报, (16): 1243-1245.
赵建新, 李献华, McCulloch. M T, 等. 1995. 皖南和赣东北蛇绿岩成
因及其构造意义: 元素和Sm-Nd同位素制约
[J]. 地球化学, 24(4):
311-324.
张旗 , 陈雨, 钱青. 1998. 两类蛇绿岩剖面及其成因的探讨
[J]. 自然科
学进展, 8(3): 326-330.
曾勇 , 杨明桂. 1999. 赣中碰撞带
[J]. 中国区域地质, 18(1): 17-22.
曾勇 , 杨明桂, 赖新平, 等. 2002. 赣东北地区中晚元古代的岩浆作用
与构造环境
[J]. 华南地质与矿产, 3: 37-43.
周金城, 王孝磊, 邱检生. 2009. 江南造山带形成过程中若干新元古
代地质事件
[J]. 高校地质学报, 15(4): 453-459.
张彦杰, 廖圣兵, 周效华, 等. 2010a. 江南造山带北缘鄣公山地区新
元古代地层构造变形特征及其动力学机制
[J]. 中国地质, 37(4):
978-994.
张彦杰, 周效华, 廖圣兵, 等. 2010b. 皖赣相邻鄣公山地区新元古代
地壳组成及造山过程
[J]. 地质学报, 84(10): 1401-1427.
注释文献：
中国地质调查局南京地质调查中心. 2009.安徽1∶5万平里、江
潭、瑶里、虹关幅区调报告.
江西地质调查院. 2002. 1∶25万景德镇幅区调报告.
安徽省地质矿产局三三二地质队,安徽省地质科学研究所. 1993.
安徽江南古陆金矿成矿地质条件和找矿方向

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