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The association characteristics and the applications of clay minerals from oil-bearing basalts in Minqiao area, northern Jiangsu province
Author(s): 
Pages: 60-67
Year: Issue:  1
Journal: RESOURCES SURVEY & ENVIRONMENT

Keyword:  含油玄武岩粘土矿物组合特征江苏;
Abstract: 苏北闵桥地区含油玄武岩的主要次生蚀变粘土矿物为:皂石、绿泥石、蒙脱石、伊利石、伊利石/蒙脱石混层、高岭石、方沸石等.不同类型的玄武岩中粘土矿物组合不同,最具特征的组合为:致密玄武岩-皂石(为主)+其它矿物;淬碎玄武岩-蒙脱石(为主)+伊利石+伊利石/蒙脱石混层+高岭石;碎裂玄武岩-皂石(为主)+绿泥石+方沸石.蚀变玄武岩中,随着蚀变作用由弱到强,这些粘土矿物可以分成四个带:皂石带-绿泥石带-蒙脱石带-高岭石带.这种分带性与夏威夷玄武岩中热液成因的粘土矿物的分带性具有可比性.在一个玄武岩岩流单元不同部位,特征粘土矿物为:底部位-蒙脱石;中部位-皂石;顶部位-伊利石+伊利石/蒙脱石混层.风化带特征粘土矿物为蒙脱石,少量高岭石.本文还对利用粘土矿物组合特征在玄武岩含油性、古地理及古环境等方面的应用进行了探讨.
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