| 应用ICP-MS研究川西南龙马溪组泥页岩稀土元素特征及沉积环境 |
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| 引用本文： | 张茜,余谦,王剑,肖渊甫,程锦翔,赵安坤,张彬.应用ICP-MS研究川西南龙马溪组泥页岩稀土元素特征及沉积环境[J].岩矿测试,2018,37(2):217-224. |
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| 作者姓名： | 张茜 余谦 王剑 肖渊甫 程锦翔 赵安坤 张彬 |
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| 作者单位： | 中国地质调查局成都地质调查中心;成都理工大学地球科学学院;国土资源部沉积盆地与油气资源重点实验室 |
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| 基金项目： | 国家科技重大专项——页岩气勘查评价技术试验与应用推广（2016ZX05034-004） |
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| 摘 要： | 为深入研究盐源盆地龙马溪组黑色岩系的沉积环境、构造背景及物源属性,指导区域页岩气勘探及相关研究,本文利用电感耦合等离子体质谱技术研究了盐源盆地南缘龙马溪组黑色页岩的稀土元素地球化学特征和沉积环境。结果表明:该区稀土总量偏低,轻稀土富集重稀土亏损,轻重稀土分异较大;δCe_N均值为0.87,显示弱的负异常,δEu_N值为0.66~1.43,变化范围较大,说明源岩成分复杂;La_S/Yb_S均值为1.31,说明研究区构造背景主要为被动大陆边缘,源岩为古老沉积岩、花岗岩及中基性岩的混合物,推测康滇古陆为其提供了主要物源。δCe_S为负异常,δEu_S为正异常,La/Ce1等特征均指示沉积期水体为还原环境,推测为深水陆棚沉积,且受到一定程度热水沉积影响。深海热液带来丰富的营养元素有利于有机质形成,还原水体环境有利于有机质保存,使得研究区龙马溪组泥岩页富含有机质,且富有机质页岩段厚度较大,由此初步认为龙马溪组泥页岩为优质烃源岩储层。
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| 关 键 词： | 盐源盆地 泥页岩 稀土元素 沉积环境 电感耦合等离子体质谱法 |
| 收稿时间： | 2017/5/9 0:00:00 |
| 修稿时间： | 2017/10/24 0:00:00 |
Application of ICP-MS to Study the Rare Earth Element Characteristics and Sedimentary Environment of Black Shale in the Longmaxi Formation in the Southwestern Sichuan Basin |
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| ZHANG Qian,YU Qian,WANG Jian,XIAO Yuan-fu,CHENG Jin-xiang,ZHAO An-kun and ZHANG Bin.Application of ICP-MS to Study the Rare Earth Element Characteristics and Sedimentary Environment of Black Shale in the Longmaxi Formation in the Southwestern Sichuan Basin[J].Rock and Mineral Analysis,2018,37(2):217-224. |
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| Authors: | ZHANG Qian YU Qian WANG Jian XIAO Yuan-fu CHENG Jin-xiang ZHAO An-kun and ZHANG Bin |
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| Institution: | Chengdu Geological Survey Center, China Geological Survey, Chengdu 610081, China;School of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China,Chengdu Geological Survey Center, China Geological Survey, Chengdu 610081, China,Chengdu Geological Survey Center, China Geological Survey, Chengdu 610081, China;School of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China;Key Laboratory of Sedimentary Basin and Oil & Gas Resources, Ministry of Land and Resources, Chengdu 610081, China,School of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China,Chengdu Geological Survey Center, China Geological Survey, Chengdu 610081, China,Chengdu Geological Survey Center, China Geological Survey, Chengdu 610081, China;School of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China and Chengdu Geological Survey Center, China Geological Survey, Chengdu 610081, China |
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| Abstract: | |
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| Keywords: | Yanyuan Basin black shale rare earth elements sedimentary environment Inductively Coupled Plasma-Mass Spectrometry |
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