宁镇地区中生代安基山中酸性侵入岩的地球化学：亏损重稀土和钇的岩浆产生的限制

许继峰 王强 等

宁镇地区中生代安基山中酸性侵入岩的地球化学：亏损重稀土和钇的岩浆产生的限制

许继峰王强等

- 许继峰（中国科学院广州地球化学研究所）　　　　　　王强（中国科学院广州地球化学研究所）　　　　　　徐义刚（中国科学院广州地球化学研究所）　　　　　　赵振华（中国科学院广州地球化学研究所）　　　　　　熊小林（中国科学院广州地球化学研究所）
基金项目:
国家重点基础研究发展规划项目(G1999043202)、和攀登计划预选项目(95-Y-25)和中国地质大学"壳幔体系组成、物质交换和动力学"开放实验室资助.

修回日期: 2001-06-12

刊出日期: 2001-11-30

Geochemistry of Anjishan intermediate-acid intrusive rocks in Ningzhen area:Constraint to origin of the magma with HREE and Y depletion

XU JiFeng,WANG Qiang,XU YiGang,ZHAO ZhenHua and XIONG XiaoLinGuangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China

Revised Date: 12 June 2001

Publish Date: 30 November 2001

摘要

摘要: 江苏省宁镇地区的中生代安基山中酸性侵入岩以亏损重稀土和钇及富集锶为成分特征，它们与消减过程的板片熔融无关，也不是基性岩浆分离结晶和地壳物质混染的产物，很有可能是相对较厚的地壳下部的镁铁质物质部分熔融产生的。相比，与安基山岩体邻近的同时代的苏州－无锡地区的和江浙地区的中酸性侵入岩和火山岩不具有亏损重稀土和钇特征，它们可能是中上地壳物质部分熔融的产物。研究表明，中生代时宁镇地区可能存在一个相对较厚的地壳（＞40km)。由于宁镇地区现在地壳的厚度仅30km左右，因此该地区中生代域之后可能经历了一个地壳的减薄过程。
- 埃达克岩 /
- 中酸性火成岩 /
- 下地壳 /
- 中生代 /
- 宁镇地区 /
- 亏损重稀土 /
- 侵入岩 /
- 地球化学 /
- 钇 /
- 锶
- Adakite /
- Intermediate-acid igneous rock /
- Lower crust /
- Mesozoic /
- Ningzhen area /

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参考文献(34)

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宁镇地区中生代安基山中酸性侵入岩的地球化学：亏损重稀土和钇的岩浆产生的限制

Geochemistry of Anjishan intermediate-acid intrusive rocks in Ningzhen area:Constraint to origin of the magma with HREE and Y depletion

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