扬子地块东南缘沉积岩的Nd同位素研究

周秦禧; 陈江峰; 张巽; 文东; 谢智; 徐祥; 邢凤鸣

ISSN 1000-0550 CN 62-1038/P

高级搜索

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

扬子地块东南缘沉积岩的Nd同位素研究

周秦禧, 陈江峰, 张巽, 文东, 谢智, 徐祥, 邢凤鸣

文章导航 > 沉积学报 > 1995 > 13(3): 39-45

周秦禧, 陈江峰, 张巽, 文东, 谢智, 徐祥, 邢凤鸣. 扬子地块东南缘沉积岩的Nd同位素研究[J]. 沉积学报, 1995, 13(3): 39-45.

引用本文:

周秦禧, 陈江峰, 张巽, 文东, 谢智, 徐祥, 邢凤鸣. 扬子地块东南缘沉积岩的Nd同位素研究[J]. 沉积学报, 1995, 13(3): 39-45.

Zhou Taixi, Chen Jiangfeng, Zhang Xun, Wen Dong, Xie Zhi, Xu Xxiang, Xing Fengming. Nd Isotope Ratios of Sedimentary Rocks from the Southeastern Margin of Yangtze Block, China[J]. Acta Sedimentologica Sinica, 1995, 13(3): 39-45.

Citation:

周秦禧, 陈江峰, 张巽, 文东, 谢智, 徐祥, 邢凤鸣. 扬子地块东南缘沉积岩的Nd同位素研究[J]. 沉积学报, 1995, 13(3): 39-45.

引用本文:

周秦禧, 陈江峰, 张巽, 文东, 谢智, 徐祥, 邢凤鸣. 扬子地块东南缘沉积岩的Nd同位素研究[J]. 沉积学报, 1995, 13(3): 39-45.

Citation:

扬子地块东南缘沉积岩的Nd同位素研究

1 中国科学技术大学地球和空间科学系合肥 230026;
2 安徽省地质科学研究所合肥 230001

基金项目: 国家自然科学基金

计量

文章访问数: 548
HTML全文浏览量: 20
PDF下载量: 394
被引次数: 0

Nd Isotope Ratios of Sedimentary Rocks from the Southeastern Margin of Yangtze Block, China

1 Department of Earth and Space Science, University of Science and Technology of China, Hefei 230001;
2 Anhui Institute of Geological Sciences, Hefei 230001

摘要

摘要: 扬子地块东南缘上溪群分布区及其周边沉积岩的Ｎｄ同位素研究结果，支持存在一条苏浙皖古生代裂陷槽（或江南深断裂）的观点。上溪群以北直至长江边所分布的震旦系－古生代的盖层沉积岩，其Ｎｄ模式年龄有两组，表明物源区不同。裂陷槽以北，沉积岩的物源区为Ｎｄ模式年龄约２.０～２.１Ｇａ的扬子物源区；以南的沉积岩表现出明显的幔源物质混染，显示出元古代岩浆活动的影响，而上溪群分布区以南直到江绍断裂附近主要表现上溪物源区的影响，华夏地块古老基底岩石则无显著贡献。
- Nd同位素模式年龄 /
- 沉积物物源区 /
- 扬子地块东南缘
Abstract: From the study of Nd isotope geochemistry for low grade metamorphic rocks, covering strata sedimentary rochs and associated volcanic rocks occured in the distribution area of Proterozoic Shangxi Group (traditionally called the Jiangnan old land) and surroundings in the southeastern margin of Yangtze Block, it is shown that the Nd isotopic model ages of the Sinian to Permian sedimentary rocks in the north side and south side of Jiangnan Deep Fault (or called Su-Zhe-Wan Palaeozoic Aulacogrn), as well as low-grade metamorphic rocks of Shangxi Group are 1.9-2.IGa, 1.2-1.3Ga and 1.7Ga, respectivelly. Therefore, the provenances of the Sinian to Palaeozoic sedimentary rocks on hath sides of the Jiangnan hop Fault were different and the idea that the Jiangnan hop Fault was harrier for edment transportation is proved by Nd isotopic geochemical evidence.There is a distribution area of the Palaeozoic strata between the Shangxi Group area and Jiangshan-Shaoxing Fault adjacent to Cathaysia Block. The Nd model ages of 2 samples for the Sinian to Silurian sedimentary rocks are 1. 8- 1. 7Ga, but the Nd model age of the basement rocks in cathaysia Block is older, for example, the model age of 2.1-2.5Ga for Chencai Group. It is indicated that the sediment supplment for the area to the south of the Shangxi Group distribution area mainly comes from the low metamorphic rock of Shangxi Group, and the basement rocks in Cathaysia Block are not an important contributors. So that the provenance of sedimentary rocks over the area between Jiangnan Deep Fault and Jiangshao Fault is the distribution area of Shangxi Group and named "Shanxi Provenance". The sediment provenance for the north side of Jiangnan Deep Fault is a particular block in the north and named "Yangtze provenance".The Nd model ages of the Sinian eedimentary rocks in the Shangxi Group distribution area and its northern margin are 1.2-1.3Ga, lower than that of Shangxi Group. The andesitic volcanic rock of Puling Formation in the northern margin of the Shangxi Group area and its xenoliths also give lower Nd model age of 1.3-1.4Ga. The intermediate and acidic volcanic rocks of Jingtan Formation in the southern margin of Shangxi Group area give Nd model ages of 1.6-2.2 Ga.From the variation of Nd model age in space and time, it is deduced that there were an orogenic movement in late Proterozoic Era there and the effect of mantle materials on sediment supplement at that time.
- Nd isotopic model age /
- sedimentary provenances /
- Southeastern margin of Yangtze Block

HTML全文

参考文献(1)

[1]

1.DePaolo D. J.，1988, Neodymium Isotope Geochemistry; An Introduction. Springer-Vetlag. Berlin, 76-80.

2.陈江峰等，1989.皖南浅变质岩和沉积岩的铰同位素组成及沉积物物源区，科学通报，39(20):1572 -1579。

3. Michard. A.，1985, Geochim. Casmochim. Acta. V. 49, p.601-610.

4.杨志坚，1981，地质论评，27(2):123-129。

5.Foland K. A. and Allen J. C.，1991，Coutrib. Mineral.Petrol. ; V. 109. P. 195-211.

6.胡雄健等，1991,浙西南前寒武纪地质，北京:地质出版社，3045。

7.许靖华等，1987，是华南造山带而不是攒南地台，中国科学B辑，(10);1107-1115。

8.Chen Jiangfeng, et al.，1991，Geology. V. 19, p.815一818.

9.邢凤鸣等，1993，长江中、下游早元古代基底的发现及意义，科学通报，38(20);1883- 1886。

10.杨巍然等，1993，壳慢演化与成岩成矿同位素地球化学，北京:地震出版社，89-90。

11.李曙光等，1992，中国东南海陆岩石圈结构与演化研究，北京:中国科学技术出版社，46-54。

12.李秀新等，1992，中国东南海陆岩石圈结构与演化研究，北京:中国科学技术出版社，32-95。

[1]	范永超, 弓虎军. 六盘山东部黄土高原冰期—间冰期沉积物锆石U⁃Pb年龄物源研究 . 沉积学报, 2025, 43(1): 76-87. doi: 10.14027/j.issn.1000-0550.2023.004
[2]	王萍, 王健, 杜远生, 周琦, 余文超, 徐源, 袁良军, 潘文, 徐亚军. 新元古代南华盆地Sturtian冰川沉积物中碳同位素负偏及其地质意义 . 沉积学报, 2024, 42(6): 2020-2030. doi: 10.14027/j.issn.1000-0550.2023.140
[3]	宋颖, 刘宇, 向庭弘, 周小琳, 曹光耀, 张璐. 扬子东南缘早寒武世氮同位素特征及其古海洋环境意义 . 沉积学报, 2024, 42(6): 2042-2053. doi: 10.14027/j.issn.1000-0550.2023.130
[4]	谢远云, 孙磊, 康春国, 迟云平, 刘璐, 王嘉新, 杜慧荣. 松嫩沙地Sr⁃Nd同位素组成特征 . 沉积学报, 2020, 38(4): 771-780. doi: 10.14027/j.issn.1000-0550.2019.075
[5]	白玛曲宗, 韦恒叶, 江增光, 邱振. 江西东岭剖面P-T界线碳同位素变化与沉积物输入的关系 . 沉积学报, 2018, 36(2): 267-279. doi: 10.14027/j.issn.1000-0550.2018.028
[6]	罗亮, 王冬兵, 尹福光, 廖世勇, 任飞, 宁括步, 唐渊. 云南保山地块香山组和丁家寨组沉积序列与碳同位素研究 . 沉积学报, 2018, 36(2): 291-301. doi: 10.14027/j.issn.1000-0550.2018.003
[7]	王振, 邱思静, 陈一凡, 程璐, 吕红华, 郑祥民. 新疆柴窝堡盆地南缘晚新生代陆源沉积物岩石磁学特征及其古环境意义 . 沉积学报, 2017, 35(3): 516-526. doi: 10.14027/j.cnki.cjxb.2017.03.010
[8]	宋璠, 杨少春, 苏妮娜, 向奎, 赵永福, 曹海防. 准噶尔盆地北缘山前带沉积物源及相模式研究——以哈拉阿拉特山前缘春晖探区为例 . 沉积学报, 2015, 33(1): 49-59. doi: 10.14027/j.cnki.cjxb.2015.01.005
[9]	王卓卓, 施立志, 张永生, 陈代钊, 梁江平. 湘桂地区泥盆纪硅岩Rb-Sr、Sm-Nd同位素地球化学特征及构造沉积背景研究 . 沉积学报, 2015, 33(4): 679-686. doi: 10.14027/j.cnki.cjxb.2015.04.006
[10]	. 辽东湾东南部海域柱状沉积物稀土元素地球化学特征与物源识别 . 沉积学报, 2014, 32(4): 684-691.
[11]	陈立雷, 张媛媛, 贺行良, 张培玉, 朱志刚, 李小琳. 海洋沉积物有机碳和稳定氮同位素分析的前处理影响 . 沉积学报, 2014, 32(6): 1046-1051.
[12]	. 长江上游水系沉积物锶—钕同位素组成及物源示踪 . 沉积学报, 2014, 32(2): 290-295.
[13]	. 塔里木盆地北部地区下志留统柯坪塔格组物源分析与物源区母岩年龄确定 . 沉积学报, 2013, 31(3): 421-429.
[14]	吴健. 兴凯湖沉积物有机碳和氮及其稳定同位素反映的28kaBP以来区域古气候环境变化 . 沉积学报, 2010, 28(2): 365-372.
[15]	曾志刚, 翟世奎, 杜安道. 大西洋洋中脊TAG热液区中块状硫化物的Os同位素研究 . 沉积学报, 2002, 20(3): 394-398.
[16]	刘少峰, 柯爱蓉, 吴丽云, 黄思骥. 鄂尔多斯西南缘前陆盆地沉积物物源分析及其构造意义 . 沉积学报, 1997, 15(1): 156-160.
[17]	李春园, 王先彬, 陈践发, 张同伟. 黄土沉积物中△C的碳同位素组成与古大气二氧化碳浓度估算 . 沉积学报, 1995, 13(S1): 171-175.
[18]	李春园, 王先彬, 邵波, 文启彬. 黄土沉积物中碳酸盐同位素组成的研究方法 . 沉积学报, 1995, 13(1): 69-74.
[19]	王翔, 王战. 华北地块东南缘上元古界风暴沉积 . 沉积学报, 1993, 11(2): 91-98.
[20]	许效松, 黄慧琼, 刘宝珺, 王砚耕. 上扬子地块早震旦世大塘坡期锰矿成因和沉积学 . 沉积学报, 1991, 9(1): 63-72.

施引文献

资源附件(0)

访问统计

点击查看大图

计量

文章访问数: 548
HTML全文浏览量: 20
PDF下载量: 394
被引次数: 0

扬子地块东南缘沉积岩的Nd同位素研究

1 中国科学技术大学地球和空间科学系合肥 230026;

2 安徽省地质科学研究所合肥 230001

基金项目: 国家自然科学基金

收稿日期: 1994-08-17
刊出日期: 1995-09-10

关键词:

Nd同位素模式年龄 /

沉积物物源区 /

扬子地块东南缘

摘要: 扬子地块东南缘上溪群分布区及其周边沉积岩的Ｎｄ同位素研究结果，支持存在一条苏浙皖古生代裂陷槽（或江南深断裂）的观点。上溪群以北直至长江边所分布的震旦系－古生代的盖层沉积岩，其Ｎｄ模式年龄有两组，表明物源区不同。裂陷槽以北，沉积岩的物源区为Ｎｄ模式年龄约２.０～２.１Ｇａ的扬子物源区；以南的沉积岩表现出明显的幔源物质混染，显示出元古代岩浆活动的影响，而上溪群分布区以南直到江绍断裂附近主要表现上溪物源区的影响，华夏地块古老基底岩石则无显著贡献。

English Abstract

Nd Isotope Ratios of Sedimentary Rocks from the Southeastern Margin of Yangtze Block, China

1 Department of Earth and Space Science, University of Science and Technology of China, Hefei 230001;

2 Anhui Institute of Geological Sciences, Hefei 230001

Received Date: 1994-08-17
Publish Date: 1995-09-10

Keywords:

Abstract: From the study of Nd isotope geochemistry for low grade metamorphic rocks, covering strata sedimentary rochs and associated volcanic rocks occured in the distribution area of Proterozoic Shangxi Group (traditionally called the Jiangnan old land) and surroundings in the southeastern margin of Yangtze Block, it is shown that the Nd isotopic model ages of the Sinian to Permian sedimentary rocks in the north side and south side of Jiangnan Deep Fault (or called Su-Zhe-Wan Palaeozoic Aulacogrn), as well as low-grade metamorphic rocks of Shangxi Group are 1.9-2.IGa, 1.2-1.3Ga and 1.7Ga, respectivelly. Therefore, the provenances of the Sinian to Palaeozoic sedimentary rocks on hath sides of the Jiangnan hop Fault were different and the idea that the Jiangnan hop Fault was harrier for edment transportation is proved by Nd isotopic geochemical evidence.There is a distribution area of the Palaeozoic strata between the Shangxi Group area and Jiangshan-Shaoxing Fault adjacent to Cathaysia Block. The Nd model ages of 2 samples for the Sinian to Silurian sedimentary rocks are 1. 8- 1. 7Ga, but the Nd model age of the basement rocks in cathaysia Block is older, for example, the model age of 2.1-2.5Ga for Chencai Group. It is indicated that the sediment supplment for the area to the south of the Shangxi Group distribution area mainly comes from the low metamorphic rock of Shangxi Group, and the basement rocks in Cathaysia Block are not an important contributors. So that the provenance of sedimentary rocks over the area between Jiangnan Deep Fault and Jiangshao Fault is the distribution area of Shangxi Group and named "Shanxi Provenance". The sediment provenance for the north side of Jiangnan Deep Fault is a particular block in the north and named "Yangtze provenance".The Nd model ages of the Sinian eedimentary rocks in the Shangxi Group distribution area and its northern margin are 1.2-1.3Ga, lower than that of Shangxi Group. The andesitic volcanic rock of Puling Formation in the northern margin of the Shangxi Group area and its xenoliths also give lower Nd model age of 1.3-1.4Ga. The intermediate and acidic volcanic rocks of Jingtan Formation in the southern margin of Shangxi Group area give Nd model ages of 1.6-2.2 Ga.From the variation of Nd model age in space and time, it is deduced that there were an orogenic movement in late Proterozoic Era there and the effect of mantle materials on sediment supplement at that time.

周秦禧, 陈江峰, 张巽, 文东, 谢智, 徐祥, 邢凤鸣. 扬子地块东南缘沉积岩的Nd同位素研究[J]. 沉积学报, 1995, 13(3): 39-45.

引用本文:

周秦禧, 陈江峰, 张巽, 文东, 谢智, 徐祥, 邢凤鸣. 扬子地块东南缘沉积岩的Nd同位素研究[J]. 沉积学报, 1995, 13(3): 39-45.

Citation:

全文HTML

参考文献 (1)

下载: 全尺寸图片幻灯片

返回文章

用微信扫码二维码

分享至好友和朋友圈

留言板

扬子地块东南缘沉积岩的Nd同位素研究

计量

Nd Isotope Ratios of Sedimentary Rocks from the Southeastern Margin of Yangtze Block, China

计量

目录

扬子地块东南缘沉积岩的Nd同位素研究

1 中国科学技术大学地球和空间科学系合肥 230026;

2 安徽省地质科学研究所合肥 230001

English Abstract

Nd Isotope Ratios of Sedimentary Rocks from the Southeastern Margin of Yangtze Block, China

1 Department of Earth and Space Science, University of Science and Technology of China, Hefei 230001;

2 Anhui Institute of Geological Sciences, Hefei 230001

全文HTML

目录

友情链接

期刊在线

联系我们

留言板

扬子地块东南缘沉积岩的Nd同位素研究

计量

出版历程

Nd Isotope Ratios of Sedimentary Rocks from the Southeastern Margin of Yangtze Block, China

计量

出版历程

目录

扬子地块东南缘沉积岩的Nd同位素研究

1 中国科学技术大学地球和空间科学系 合肥 230026; 2 安徽省地质科学研究所 合肥 230001

English Abstract

Nd Isotope Ratios of Sedimentary Rocks from the Southeastern Margin of Yangtze Block, China

1 Department of Earth and Space Science, University of Science and Technology of China, Hefei 230001; 2 Anhui Institute of Geological Sciences, Hefei 230001

全文HTML

目录

友情链接

期刊在线

联系我们

1 中国科学技术大学地球和空间科学系合肥 230026;

2 安徽省地质科学研究所合肥 230001

1 Department of Earth and Space Science, University of Science and Technology of China, Hefei 230001;

2 Anhui Institute of Geological Sciences, Hefei 230001