山西袁家村组变沉积岩地球化学特征及构造意义

doi:10.12068/j.issn.1005-3026.2018.10.014

东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (10): 1438-1441.DOI: 10.12068/j.issn.1005-3026.2018.10.014

山西袁家村组变沉积岩地球化学特征及构造意义

门业凯¹，耿蓉蓉²，尤欣慰³，何强文³

(1. 东北大学秦皇岛分校资源与材料学院，河北秦皇岛066004; 2. 辽宁省冶金地质勘查局地质勘查研究院，辽宁鞍山114038; 3. 东北大学资源与土木工程学院，辽宁沈阳110819)

收稿日期:2017-06-04 修回日期:2017-06-04 出版日期:2018-10-15 发布日期:2018-09-28
通讯作者: 门业凯
作者简介:门业凯(1986-)，男，山东高密人，东北大学秦皇岛分校讲师，博士.冯明杰(1971-)，男，河南禹州人，东北大学副教授; 王恩刚(1962-)，男，辽宁沈阳人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(51171041).国家重点研发计划项目(2016YFC0801603)；中央高校基本科研业务费专项资金资助项目(N172303015)；东北大学秦皇岛分校校内科研基金资助项目(XNB201720).

Geochemical Features and Tectonic Significances of Yuanjiacun Formation Metasedimentary Rocks in Shanxi Province

MEN Ye-kai¹， GENG Rong-rong²， YOU Xin-wei³， HE Qiang-wen³

1. School of Resources & Materials， Northeastern University at Qinhuangdao， Qinhuangdao 066004， China; 2. Geology Exploration Research Institute， Metallurgical Geology Exploration Bureau of Liaoning Province， Anshan 114038， China; 3. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.

Received:2017-06-04 Revised:2017-06-04 Online:2018-10-15 Published:2018-09-28
Contact: MEN Ye-kai
About author:-
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摘要/Abstract

摘要： 早元古宙袁家村组岩层是吕梁地区主要的含矿地层.对岩层样品进行元素地球化学组分测试，结果表明:主量元素以SiO₂为主，次为Al₂O₃，TFeO和K₂O，SiO₂的含量与其他主要氧化物负相关;LILE和HFSE明显富集;稀土元素配分曲线具明显右倾的特征，轻重稀土分馏明显，轻稀土富集强烈;Ce异常极弱，Eu异常变化范围较大.袁家村组地层属副变质岩，原岩以沉积岩为主，沉积过程中风化作用较弱.物源性质以高成熟度的上地壳长英质沉积物为主，沉积过程可能混入了少量含古老沉积物成分和安山质岛弧火成岩组分的岩石，沉积构造环境为被动大陆边缘.

关键词: 袁家村组, 元素地球化学, 原岩恢复, 物源属性, 构造环境

Abstract: Early proterozoic Yuanjiacun Formation is the main ore bearing stratum in Lyuliang district. The elemental geochemical compositions of the samples were tested. Results showed that the major element is mainly SiO₂， then is Al₂O₃， TFeO and K₂O in sequence. SiO₂ exhibits negative correlation with the other major oxides， and LILE and HFSE are significantly rich. The rare earth element distribution curves take on obvious right-divergent characteristics， with strong fractionations of light and heavy rare earth and rich light rare earth. The Ce anomalies are extremely weak， and the range of Eu anomalies is relatively large. The Yuanjiacun Formation is parametamorphite， and the original rock is dominated by sedimentary rock with weak weathering during the deposition process. The provenance attributem is dominated by high-mature upper crustal felsic sediments mixed by small amount of rocks containing ancient sedimentary components and andesitic arc igneous rock components in the sedimentary process. The tectonic environment is passive continental margin.

Key words: Yuanjiacun Formation, element geochemistry, protolith restoration, provenance attributem, tectonic environment

中图分类号:

P618.51

门业凯，耿蓉蓉，尤欣慰，何强文. 山西袁家村组变沉积岩地球化学特征及构造意义[J]. 东北大学学报:自然科学版, 2018, 39(10): 1438-1441.

MEN Ye-kai， GENG Rong-rong， YOU Xin-wei， HE Qiang-wen. Geochemical Features and Tectonic Significances of Yuanjiacun Formation Metasedimentary Rocks in Shanxi Province[J]. Journal of Northeastern University Natural Science, 2018, 39(10): 1438-1441.

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山西袁家村组变沉积岩地球化学特征及构造意义

Geochemical Features and Tectonic Significances of Yuanjiacun Formation Metasedimentary Rocks in Shanxi Province

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