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赣中变质岩带变泥砂质岩石地球化学特征及其地质意义
胡恭任; 刘丛强; 章邦桐; 唐红峰
Corresponding Author胡恭任
2004
Source Publication地球化学
ISSN0379-1726
Volume33Issue:2Pages:118-130
Abstract赣中变质岩带主要由变泥砂质岩石和少量斜长角闪岩组成。30个变泥砂质岩石样品分析表明,稀土元素分布模式显示明显富集轻稀土元素及Eu负异常[∑REE=129~296μg/g,δEu=0.51~0.86,(La/Yb)N=3.95~12.91,其小相容元素比值高(Th/Sc=0.57~3.59、La/Sc=1.46~12.4、La/Yb=5.84~19.0、La/Sm=4.69~6.87、Th/U=3.40~6.42),大离子亲石元素富集,Zr、Hf、Sc、Ti、Y、HREE和Sr含量较低,其原岩应为一套砂泥质岩石,沉积于远离陆地的克拉通大陆架浅海环境;δBa=0.10~0.93,Nd同位素亏损地幔模式年龄tDM=1597~2525Ma,εNd(0)=-9.9~-15.8,其源区物质主体由占元占代富铝富钾的花岗质岩石和(或)碎屑沉积岩构成,经历了较强的化学风化作用。
metadata_83中国科学院地球化学研究所
Keyword变泥沙质岩石 地球化学 Nd同位素 变质岩带 江西省
Indexed ByCSCD
Language中文
CSCD IDCSCD:1635193
Citation statistics
Cited Times:9[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/352002/1617
Collection环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
Corresponding Author胡恭任
Recommended Citation
GB/T 7714
胡恭任,刘丛强,章邦桐,等. 赣中变质岩带变泥砂质岩石地球化学特征及其地质意义[J]. 地球化学,2004,33(2):118-130.
APA 胡恭任,刘丛强,章邦桐,&唐红峰.(2004).赣中变质岩带变泥砂质岩石地球化学特征及其地质意义.地球化学,33(2),118-130.
MLA 胡恭任,et al."赣中变质岩带变泥砂质岩石地球化学特征及其地质意义".地球化学 33.2(2004):118-130.
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