GYIG OpenIR  > 矿床地球化学国家重点实验室  > 期刊论文
Origin of Triassic granites in central Hunan Province, South China: constraints from zircon U-Pb ages and Hf and O isotopes
Shanling Fu; Ruizhong Hu; Xianwu Bi; Yuwei Chen; Jiahua Yang; Yong Huang
2015
发表期刊International Geology Review
卷号57期号:2页码:97-111
摘要
Triassic granites crop out extensively in central Hunan Province, South China. Representative granites include the Baimashan, Weishan, and Ziyunshan plutons. Lithologically, these granites mainly comprise biotite monzogranite, two-mica granites, hornblende-biotite granite, hornblende-biotite monzogranite, and garnet-muscovite granite. These granites have in situ zircon secondary ion mass spectrum U-Pb ages between 223.2 +/- 3.3 and 209.3 +/- 4.0Ma, indicating that they likely formed predominantly in the Late Triassic. These granitic plutons have similar zircon Hf and O isotopic compositions, with epsilon(Hf)(t) values of -0.8 to -9.0, two-stage depleted mantle model ages (T-DM2) of 1.81-1.31Ga, and weighted mean of delta O-18(Zrc) values of 8.53 +/- 0.58 parts per thousand to 9.12 +/- 0.28 parts per thousand. Combined with U-Pb dating and Hf isotopic data, the elevated and variable delta O-18 and epsilon(Hf)(t) values of the individual granites indicate that these Triassic granites were likely produced by partial melting of upper Paleoproterozoic to lower Mesoproterozoic metasedimentary rocks and are S-type granites. The variable proportions of inherited zircons in certain samples with U-Pb ages of 627-992Ma indicate the involvement of lower-middle Neoproterozoic crustal materials during magma crystallization through wall-rock contamination, which resulted in the wide range of isotopic compositions. Underplating of mantle-derived magma may have provided the thermal energy for partial melting of the upper Paleoproterozoic and lower Mesoproterozoic basements, thereby generating these late Triassic granites. The lack of positive epsilon(Hf)(t) values and high delta O-18(Zrc) values indicate that the contribution of mantle-derived magmas to these granites may be insignificant.
关键词Triassic Granites Zircon Hf–o Isotopes Magma Source South China
学科领域矿床地球化学
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/352002/5973
专题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
矿床地球化学国家重点实验室
推荐引用方式
GB/T 7714
Shanling Fu,Ruizhong Hu,Xianwu Bi,et al. Origin of Triassic granites in central Hunan Province, South China: constraints from zircon U-Pb ages and Hf and O isotopes[J]. International Geology Review,2015,57(2):97-111.
APA Shanling Fu,Ruizhong Hu,Xianwu Bi,Yuwei Chen,Jiahua Yang,&Yong Huang.(2015).Origin of Triassic granites in central Hunan Province, South China: constraints from zircon U-Pb ages and Hf and O isotopes.International Geology Review,57(2),97-111.
MLA Shanling Fu,et al."Origin of Triassic granites in central Hunan Province, South China: constraints from zircon U-Pb ages and Hf and O isotopes".International Geology Review 57.2(2015):97-111.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Origin of Triassic g(2253KB) 开放获取使用许可浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Shanling Fu]的文章
[Ruizhong Hu]的文章
[Xianwu Bi]的文章
百度学术
百度学术中相似的文章
[Shanling Fu]的文章
[Ruizhong Hu]的文章
[Xianwu Bi]的文章
必应学术
必应学术中相似的文章
[Shanling Fu]的文章
[Ruizhong Hu]的文章
[Xianwu Bi]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Origin of Triassic granites in central Hunan Province.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。