南岭东段淋洋岩体的锆石铀-铅定年及其构造和成矿意义

孙艳; 李建康; 陈振宇; 陈郑辉; 侯可军; 赵正

南岭东段淋洋岩体的锆石铀-铅定年及其构造和成矿意义

1.
中国地质大学(北京), 北京 100083
2.
国土资源部成矿作用与资源评价重点实验室, 中国地质科学院矿产资源研究所, 北京 100037
3.
国土资源部成矿作用与资源评价重点实验室, 中国地质科学院矿产资源研究所, 北京 100037
4.
国土资源部成矿作用与资源评价重点实验室, 中国地质科学院矿产资源研究所, 北京 100037
5.
国土资源部成矿作用与资源评价重点实验室, 中国地质科学院矿产资源研究所, 北京 100037
6.
国土资源部成矿作用与资源评价重点实验室, 中国地质科学院矿产资源研究所, 北京 100037
7.
中国地质科学院, 北京 100037

基金项目:

国家深部探测技术与实验研究专项"南岭成矿带地壳岩浆系统结构探测实验"课题(SinoProbe 0301),"南岭于都—赣县矿集区立体探测技术与深部成矿预测示范"课题(201011048)

中国地质大调查项目"南岭地区岩浆岩成矿专属性研究"(1212011120989),"我国重要矿产和区域成矿规律研究"(1212010633903)

我国三稀金属资源战略调查"我国三稀资源战略调查及综合"项目(1212011220803)

计量
- 文章访问数: 1518
- HTML全文浏览量: 1
- PDF下载量: 868
出版历程
- 收稿日期: 2011-12-30

U-Pb Dating of Zircons from the Linyang Granitic Intrusion in the Nanling Metallogenic Belt and Its Significance to Tectonics and Metallization

1.
China University of Geosciences (Beijing), Beijing 100083, China
2.
Key Laboratory of Metallogeny and Mineral Resource Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
3.
Key Laboratory of Metallogeny and Mineral Resource Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
4.
Key Laboratory of Metallogeny and Mineral Resource Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
5.
Key Laboratory of Metallogeny and Mineral Resource Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
6.
Key Laboratory of Metallogeny and Mineral Resource Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
7.
Chinese Academy of Geological Sciences, Beijing 100037, China

摘要

摘要: 南岭东段淋洋岩体研究程度低,成岩时代众说纷纭,其主要由中细-中粗粒斑状黑云(二云)花岗岩组成。本研究运用激光剥蚀-多接收器电感耦合等离子体质谱(LA-MC-ICPMS)对岩体进行锆石U-Pb精确测年。定年结果表明,淋洋岩体某一断层附近花岗岩的成岩年龄为(233.1±1.3) Ma(MSWD=1.11),下村矿点附近岩体的成岩年龄为(243.3±2.1) Ma(MSWD=2.3),二者均属于印支期,说明淋洋岩体形成于印支期陆陆碰撞和地壳抬升和增厚的构造环境,暗示淋洋岩体可能存在印支期或燕山期的成矿作用,具有进一步研究的价值。
- 淋洋岩体 /
- 下村矿点 /
- 锆石LA-MC-ICPMS /
- U-Pb定年 /
- 成岩时代 /
- 印支期
Abstract: The Linyang granitic intrusion is located in the east segment of the Nanling metallogenic belt. Due to a lack of research, it is not well known for its emplacement age. In this paper, the zircon U-Pb dating results from the Linyang granite through Laser Ablation-Multicollector Inductively Coupled Plasma-Mass Spectrometry (LA-MC-ICPMS) show that the granite near a fault and Xiacun ore spot intrude at (233.1±1.3) Ma and (243.3±2.1) Ma, respectively. Therefore, the Linyang granite formed in the Indo-Chinese epoch during the continent-continent collision together with uplifting and thickening of the earth's crust, and further research is necessary for the potential metallization of the Linyang intrusion that possibly occurred in the Indo-Chinese epoch or Yanshan epoch.
- Linyang /
- granitic /
- intrusion /
- Xiacun /
- ore /
- spot

HTML全文

参考文献(18)

莫柱孙,叶伯丹,潘维祖,江绍年,庄锦良,高秉璋, 刘金全,刘文章.南岭花岗岩地质学[M].北京: 地质出版社,1980: 187-196.

赵懿英,刘道忠,沈吉.华南万洋山—诸广山复式花岗岩基带的划分[J].南京大学学报,1991(3-4): 129-136.

胡受奚,赵乙英,胡志宏,郭继春,徐兵.中国东部中-新生代活动大陆边缘构造-岩浆作用演化和发展[J].岩石学报,1994,10(4): 370-381.

李献华.万洋山—诸广山花岗岩复式岩基的岩浆活动时代与地壳运动[J].中国科学:B辑,1990(7): 747-755.

江西省地质局区域地质调查大队.1∶20万井冈山幅地质报告 .1971.

侯可军,李延河,田有荣.LA-MC-ICP-MS锆石微区原位U-Pb定年技术[J].矿床地质,2009,28(4): 481-492.

郭春丽,毛景文,陈毓川.赣南营前岩体的年代学、地球化学、Sr-Nd-Hf同位素组成及其地质意义[J].岩石学报,2010,26(3): 919-937.

Carter A, Roques D, Bristow C, Kinn P. Under-standing Mesozoic accretion in Southeast Asia: Significance of Triassic thermotectonism (Indosinian orogen) in Vietnam [J]. Geology, 2001, 29(3): 211-214.

Chung S L, Lo C H, Lan C Y, Wang P L, Lee T Y, Hoa T T, Thanh H H, Anh T T. Collision between the Indochina and South China blocks in the Early Triassic: Implications for the Indosinian Orogeny and Closure of Eastern Paleo-Tethys . EOS (Transaction, American Geophysical Union), 1999,80: 1043.

刘善宝,王登红,陈毓川.赣南崇义-大余-上犹矿集区不同类型含矿石英中白云母⁴⁰Ar/³⁹Ar年龄及其地质意义[J].地质学报, 2008,82(7): 932-939.

蔡明海,陈开旭,屈文俊.湘南荷花坪锡多金属矿床地质特征及辉钼矿Re-Os测年[J].矿床地质, 2006,25(3): 263-268.

杨锋,李晓峰,冯佐海.栗木锡矿云英岩化花岗岩白云母⁴⁰Ar/³⁹Ar年龄及其地质意义[M].桂林工学院学报,2009,29(1): 20-24.

王德滋.华南花岗岩研究的回顾与展望[J].高校地质学报,2004,10(3): 305-314.

地矿部南岭项目花岗岩专题组.南岭花岗岩地质及其成因和成矿作用[M].北京: 地质出版社,1989.

王登红,李华芹,秦燕,梅玉萍,陈郑辉,屈文俊,王彦斌,蔡红,龚述清,何晓平.湖南瑶岗仙钨矿成岩成矿作用年代学研究[J].岩矿测试,2009,28(3): 201-208.

王登红,陈富文,张永忠,雷泽恒,梁婷,韦龙明,陈郑辉,刘善宝,王成辉,李华芹,许以明,曾载淋,许建祥,傅旭杰,范森葵,陈祥云,贾宝华,姚根华.南岭地区有色-贵金属成矿潜力及综合探测技术示范研究[M].北京: 地质出版社,2011: 472.

王登红,陈毓川,陈郑辉,刘善宝,许建祥,张家菁,曾载淋,陈富文,李华芹,郭春丽.南岭地区矿产资源形势分析和找矿方向研究[J].地质学报,2007,81(7): 882-890.

陈毓川,裴荣富,张宏良.南岭地区与中生代花岗岩类有关的有色及稀有金属矿床地质[M].北京: 地质出版社,1989: 1-508.

施引文献

资源附件(0)

计量

文章访问数: 1518
HTML全文浏览量: 1
PDF下载量: 868
被引次数: 0

南岭东段淋洋岩体的锆石铀-铅定年及其构造和成矿意义

计量

出版历程

U-Pb Dating of Zircons from the Linyang Granitic Intrusion in the Nanling Metallogenic Belt and Its Significance to Tectonics and Metallization

计量

出版历程

目录