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赣南—粤北白垩纪火山岩的地球化学特征及其成因机制讨论
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引用本文:张树明,巫建华,周维勋,左跃明,李清龙.1999.赣南—粤北白垩纪火山岩的地球化学特征及其成因机制讨论[J].地质论评,45(7):712-716,[DOI]:.
Zhang Shuming,Wu Jianhua,Zhou Weixun,Zuo Yueming,Li Qinglong.1999.A Discussion on the Origin and Geochemical Characteristics of Cretaceous Volcanic Sequences in South Jiangxi and North Guangdong[J].Geological Review,45(7):712-716.
DOI:
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作者单位
张树明 华东地质学院,江西临川,344000 
巫建华  
周维勋  
左跃明  
李清龙  
中文摘要:通过对赣南—粤北白垩纪火山岩地球化学特征研究,得出火山岩系形成于一种过渡性构造环境(介于强烈挤压与强烈伸展之间)。其中,基性火山岩形成于走滑相对伸展环境,岩浆源自较深部,具亏损地幔性质;酸性火山岩形成于走滑相对挤压环境,岩浆源自较浅部,以壳源组分为主。它们共同构成过渡性岩浆杂岩建造。
中文关键词:地球化学 构造环境 火山岩源区 白垩纪 赣南—粤北
 
A Discussion on the Origin and Geochemical Characteristics of Cretaceous Volcanic Sequences in South Jiangxi and North Guangdong
NameInstitution
Zhang ShumingEast China College of Geology,Linchuan,Jiangxi,344000
Wu Jianhua
Zhou Weixun
Zuo Yueming
Li Qinglong
Abstract:Through discussion and analysis of the geochemical characteristics of C re taceous volcanic rocks in south Jiangxi and north Guangdong,it is concluded th at volcanic rocks are formed in a transitional tectonic environment (between the highl y compressed and the highly extended). Basic volcanic rocks occur in a rela tively extensional environment.The magma comes from the depth with a depleted m antle nature.Acid volc anic rocks are formed in the relatively compressed environment.The magma comes f rom the shall ow parts and is dominatedby crustal compositions.Together they constitu te the intermediate magmatic complex formation.
keywords:geochemistry  tectonic environment  volcanic rock source area  Cretaceous period  south Jiangxi—north Guangdong
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