赣南—粤北白垩纪火山杂岩微量元素特征及源区探讨  

A DISCUSSION ON TRACE ELEMENT CHARACTERISTICS AND SOURCE REGION OF CRETACEOUS VOLCANIC COMPLEX IN SOUTHERN JIANGXI-NORTHERN GUANGDONG

作　　者：张树明[1] 巫建华[1] 周维勋[1] 

机构地区：[1]华东地质学院

出　　处：《江西地质》1999年第2期93-99,共7页Jiangxi Geology

基　　金：核工业科学基金

摘　　要：赣南—粤北白垩纪火山杂岩来自两个不同的岩浆源区，中、基性岩类源自幔源区，酸性岩类源自壳源区，两者互有影响，组成过渡性岩浆杂岩建造，它们具有各自不同的微量元素特征。本文在讨论两个不同岩浆源区火山杂岩微量元素、稀土元素特征的基础上，对它们的岩浆源区性质进行了探讨。The Cretaceous volcanic complex in southern Jiangxi-northern Guangdong were derived from two different magma source regions :the mantle region from which the intermediate-basic rocks were derived and the crustal region that gave rise to the acid rocks. These two kinds of magma have been influenced by each other,forming a transitional magmatic complex formation. Volcanic complexes of the two different magma sources have different trace element characteristics. Based on a discussion of the trace element and rare earths characteristics, this paper sheds light on the properties of these two magma sources.

关 键 词：白垩纪 火山杂岩 微量元素 稀土元素 岩浆源区 

分 类 号：P588.14[天文地球—岩石学]