富集性和亏损性A型花岗岩(以华北燕山和新疆乌伦古河地区岩石为例)

北京大学学报（自然科学版）

富集性和亏损性A型花岗岩(以华北燕山和新疆乌伦古河地区岩石为例)

许保良, 王式洸, 韩宝福, 阎国翰, 何中甫

收稿日期:1997-12-05 出版日期:1998-04-20 发布日期:1998-04-20

A-Type Granites with the Character of Enrichment and Loss with Particular Reference to Both Suites of the Yanshan, North China and Wulunguhe, Northwest China

XU Baoliang, WANG Shiguang, HAN Baofu, YAN Guohan, HE Zhongfu

Department of Geology, Peking University, Beijing, 100871

Received:1997-12-05 Online:1998-04-20 Published:1998-04-20

摘要/Abstract

摘要： 华北燕山地区和新疆乌伦古河地区发育有过碱性A型花岗岩类。前者出现于板内，富Nb、低εNb而高εSr；后者形成于造山晚期，贫Nb、高εNd而低εSr。总结了它们的地质学、岩石学、主要和痕量元素地球化学资料，报道了Rb-Sr和 Sm-Nd同位素分析结果；以此为基础探讨了这类岩石的物质来源及其亚类划分问题；提出两类岩石分别来源于富集性储库与亏损性储库的看法。

关键词: 中国华北和西北地区, A型花岗岩, 物质来源, 亚类划分

Abstract: Two suites of A-type granites with the character of alkaline-oversaturation are discovered in both of the Yanshan region, East China and the Wulunguhe region, the Xinjiang Uygur autonomous region. The Yanshan's A-type suite occurs in sitting of within-plate in tectonic, with character of Poor Nb, low εNd(T) and high εSr(T), the Wulunguhe's one are distributed over a late-organic sitting, being poor Nb, high εNd(T) and low εSr(T). Geology, petrology and data of major-trace-elements for the granites are summed, analysis results of Sm-Nd and Rb-Sr isotope are reported, derived-materials and subdivision for them are discussed in the paper. Two kinds of sources of derived-material, that one is enriched but another is lost, are implicated by these data for the A-type granites of both regions of the Yanshan and the Wulunguhe.

Key words: North and Northwest China, A-type Granites, derived-materials, subgroup

中图分类号:

P588.12

许保良, 王式洸, 韩宝福, 阎国翰, 何中甫. 富集性和亏损性A型花岗岩(以华北燕山和新疆乌伦古河地区岩石为例)[J]. 北京大学学报（自然科学版）.

XU Baoliang,WANG Shiguang,HAN Baofu,YAN Guohan,HE Zhongfu. A-Type Granites with the Character of Enrichment and Loss with Particular Reference to Both Suites of the Yanshan, North China and Wulunguhe, Northwest China[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

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https://xbna.pku.edu.cn/CN/Y1998/V34/I2/352

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[2]	吴泰然. 花岗岩及其形成的大地构造环境[J]. 北京大学学报（自然科学版）, 1995, 31(3): 358-365.