高校地质学报2011，Vol.17Issue(3)：393-405,13.
江南造山带北缘鄣源基性岩地质-地球化学特征及成因机制
Geological and Geochemical Characteristics and Petrogenesis of the Mafic Rocks from Zhangyuan, Northern Jiangnan Orogen
摘要
Abstract
Zhangyuan mafic rocks of NE-SW trend are distributed along the Yaoli-Zhangyuan-Jiangtan line in the northern slope of Zhanggong Mountain, between Anhui and Jiangxi provinces. They occur as structural shivers and fragments in flysch matrix textured by Neoproterozoic volcano-fine clastic rocks of continental margin, and overall display characteristics of tectonic melange belt. Mafic fragments include altered pillow-block basic lava, gabbro, dolerite, etc, which were concomitant in space since the Neoproterozoic. By analyzing geological and geochemical characteristics of the Zhangyuan mafic rocks, their origin is considered to be in a small, slow expansion oceanic basin spreading ridge of the continental margin environment, with the features of primitive oceanic crust mafic rocks. It is proposed that Zhangyuan mafic rocks belong to westward extension of Fuchuan ophiolite in Southern Anhui province.关键词
江南造山带北缘/新元古代/基性岩/地质及岩石地球化学特征/成因Key words
northern Jiangnan orogen/ Neoproterozoic/ mafic rocks/ geology and geochemistry/ petrogenesis分类
天文与地球科学引用本文复制引用
张彦杰,周效华,廖圣兵,余明刚,蒋仁,姜杨..江南造山带北缘鄣源基性岩地质-地球化学特征及成因机制[J].高校地质学报,2011,17(3):393-405,13.基金项目
中国地质调查局“安徽1:5万平里、江潭、瑶里、虹关幅区调”项目(1212010610609) （1212010610609）
