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湘中锡矿山矿区煌斑岩中捕获锆石U-Pb定年及其地质意义
彭建堂; 胡阿香; 张龙升; 雷文艳; 阳杰华; 林芳梅
2014
Source Publication大地构造与成矿学
Volume38Issue:3Pages:686-693
Abstract利用LA-ICP-MS技术,对湘中锡矿山煌斑岩中的锆石进行U-Pb同位素定年。研究表明,该煌斑岩中的锆石呈半自形或半浑圆状,为捕获锆石。锆石阴极发光图像显示有典型的振荡环带和韵律结构,部分还可见扇形分带,其形貌和地球化学特征均显示为岩浆成因。锆石U-Pb同位素年龄主要集中在830 Ma和800 Ma附近,少量为-730 Ma,与江南古陆前寒武纪浅变质岩的年龄十分吻合,揭示湘中盆地深部确实存在新元古界基底,这为示踪湘中锑矿的成矿物质来源和判别湘中地区大地构造环境提供了新的依据。锡矿山煌斑岩形成于一种拉张伸展的构造环境中,其侵位深度为5 km以上.
Keyword锆石u-pb定年 煌斑岩 锡矿山矿区 湘中地区
Subject Area矿床地球化学
Indexed ByCSCD
Language中文
CSCD IDCSCD:5207579
Citation statistics
Cited Times:4[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/352002/5331
Collection矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文
Recommended Citation
GB/T 7714
彭建堂,胡阿香,张龙升,等. 湘中锡矿山矿区煌斑岩中捕获锆石U-Pb定年及其地质意义[J]. 大地构造与成矿学,2014,38(3):686-693.
APA 彭建堂,胡阿香,张龙升,雷文艳,阳杰华,&林芳梅.(2014).湘中锡矿山矿区煌斑岩中捕获锆石U-Pb定年及其地质意义.大地构造与成矿学,38(3),686-693.
MLA 彭建堂,et al."湘中锡矿山矿区煌斑岩中捕获锆石U-Pb定年及其地质意义".大地构造与成矿学 38.3(2014):686-693.
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