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[1]黄喜峰,钱壮志,吴文奎,等.贺兰山小松山基性—超基性 杂岩体岩石地球化学特征[J].地球科学与环境学报,2008,30(04):351-356.
　HUANG Xi-feng,QIAN Zhuang-zhi,WU Wen-kui,et al.Lithogeochemical Characteristics of Basic-Ultrabasic Intrusion , Xiaosongshan , Helanshan[J].Journal of Earth Sciences and Environment,2008,30(04):351-356.
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贺兰山小松山基性—超基性 杂岩体岩石地球化学特征(PDF)
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第30卷
期数:
2008年第04期
页码:
351-356
栏目:
基础地质与矿产地质
出版日期:
2008-12-20

文章信息/Info

Title:
Lithogeochemical Characteristics of Basic-Ultrabasic Intrusion , Xiaosongshan , Helanshan
作者:
黄喜峰1; 钱壮志1; 吴文奎1; 孙保平1; 逯东霞1; 王成2; 陆彦俊2
1.长安大学地球科学与资源学院,陕西西安710054;2.宁夏地质调查研究院,宁夏银川750021
Author(s):
HUANG Xi-feng1; QIAN Zhuang-zhi1; WU Wen-kui1; SUN Bao-ping1;  LU Dong-xia1; WANG Cheng2; LU Yan-jun2
1.School o f Earth Sciences and Resources, Chang' an University, Xi' an 710054, Shaanxi, China; 2.Ningxia Institute o f Geological Survery, Yinchuan 750021, Ningxia, China)
关键词:
岩石地球化学; 大地构造环境; 分离结晶; 同化混染; 小松山基性—超基性岩体
Keywords:
lithogeochemical;  geotectonic environment;  assimilation and contamination;  fractional crystallization;  Xiaosongshan basic-ultrabasic complex
分类号:
P588.12
DOI:
-
文献标志码:
A
摘要:
贺兰山小松山岩体的岩石地球化学研究表明,基性岩的Mg#为0.71～0.76,接近原生岩浆的值,超基性岩 的Mg#为0.80～0.89,具有岩浆早期堆晶的特征,稀土总量.REE为(13.03～82.66)×10-6;δ(Eu)为1.08～ 1.61,具弱正异常;(La/Yb)N为2.49～5.24,(Ce/Yb)N为3.01～4.97,配分曲线表现为轻稀土相对富集的右倾型。 微量元素配分曲线图表现为大离子亲石元素富集。岩石地球化学数据综合分析证明,该岩体产于板内拉张环境, 岩体形成过程中经历了岩浆分离结晶作用,后期发生了同化混染,岩体具有寻找铬-铜-镍型岩浆矿床的潜力。
Abstract:
The Xiaosongshan basic-ultrabasic complex is consists of three closely associated rocks(peridotite, gabbro and pyroxenite). The Mg# of the basic rocks is 0. 71 to 0. 76, which is similar to Mg# of the original magma. The Mg# of the ultrabasic rocks is 0. 80～ 0. 89, demostrates the characteristics of early cumulation of magma.The total? REE is 13. 03× 10- 6 to 82. 66× 10- 6, theδ(Eu)is 1. 08 to 1. 61 which shows a weak positive Eu anomaly, the(La/ Yb)Nis 2. 49 to 5. 24,and the(Ce/ Yb)Nis 3. 01 to 4. 97. The normalized REE patterns of the Xiaosongshan complex are relatively enriched in LREE and belong to the right-inclined type. The trace element patterns show enrichment in LILE. These lithogeochemical data suggest that the Xiaosongshan complex was formed in intra-plate extension environment. The forming processes of the Xiaosongshan complex may include fractional crystallization in the early and contamination in the late. Therefore, the Xiaosongshan complex has potential advantages in searching magmatic deposit of Cr-Cu-Ni type.

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备注/Memo

备注/Memo:
收稿日期:2008-01-12
基金项目:国家重点基础研究发展计划项目(2003CB214600);中国地质调查局项目(J48C001003;J48C002003)
作者简介:黄喜峰(1971-),男,吉林松原人,理学博士研究生,从事区域构造与成矿研究。E-mail:huangyan@chd.edu.cn
更新日期/Last Update: 2008-12-20