气候变化领域集成服务门户(CCPortal): 中国东北地区中新生代岩浆岩中氮及其同位素组成

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	中国东北地区中新生代岩浆岩中氮及其同位素组成
其他题名	Content and Isotopic Compositions of Nitrogen in Mesozoic and Cenozoic Magmatite Inclusions in Northeast China
	张成君; 陈发虎; 文启彬
发表日期	2002
ISSN	0371-5736
卷号	48 期号:1 页码:24-28
中文摘要	通过真空热解法分析中国东北地区中新生代以来形成的碱性玄武岩和基性侵入岩中氮含量及其同位素组成的差异，结果表明喷出岩和侵入岩中流体组分在岩浆的上升侵入过程中有不同的表现形式，喷出岩与转岩有较少的混染作用发生。碱性玄武岩包裹体中氮含量较低，为1.91～14.01muL/g，delta~(15)N为-22.6～-1.8。侵入岩包裹体中氮含量为25.39～731.30muL/g，delta~(15)N为+0.7～+20.9。碱性玄武岩中N_2含量和氮同位素组成可能部分代表了上地幔流体的特征，脱气作用造成同位素值有较大变化；而侵入岩中的N_2含量和氮同位素组成更多地反映了地壳中含氮物质浓度及同位素组成特征。
英文摘要	Nitrogen content and its isotopic compositions in inclusions of basalts and basic intrusive rocks formed in Northeast China from Mesozoic to Cenozoic have been analysed by heating in vacuum. It is shown that liquid components of the extrusive and intrusive rocks have different behaviours in the process of intrusion, and only a little contamination has occurred between extrusive rocks and their country rocks. The content of nitrogen in alkali basalt inclusions is low, 1.91 ～ 14.01 muL/g, and delta~(15)N is in the range of -22.6 to -1.8. The nitrogen content in intrusive rock inclusions is higher, 25.39 ～ 731.30 muL/g, and delta~(15)N ranges from +0.7 to +20.9. For alkali basalts, the nitrogen content and isotopic compositions may partly represent the characteristics of the upper mantle fluids, and degassing may cause the nitrogen isotopic ratios to change greatly. But for the intrusive rocks, the nitrogen content and isotope compositions better reflect the content and isotope compositions of nitrogen-bearing matter in the crust.
关键词	东北地区碱性玄武岩侵入岩氮含量同位素组成
英文关键词	Northeast China;alkali basalt;intrusive rock;nitrogen content;isotopic composition
语种	中文
WOS研究方向	Geology
WOS类目	GEOLOGY
CSCD记录号	CSCD:971921
来源期刊	地质论评
来源机构	兰州大学 ; 中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/1873
推荐引用方式 GB/T 7714	张成君,陈发虎,文启彬. 中国东北地区中新生代岩浆岩中氮及其同位素组成[J]. 兰州大学, 中国科学院青藏高原研究所,2002,48(1):24-28.
APA	张成君,陈发虎,&文启彬.(2002).中国东北地区中新生代岩浆岩中氮及其同位素组成.地质论评,48(1),24-28.
MLA	张成君,et al."中国东北地区中新生代岩浆岩中氮及其同位素组成".地质论评 48.1(2002):24-28.