摘要
十亩地角闪辉长岩体是新发现的晚古生代基性岩体 ,总体以线状沿秧田坝-十亩地构造直立带分布 ,岩石地球化学特征显示为洋中脊拉斑玄武岩性质。其岩石学、岩石地球化学特征与略阳县北三岔子勉略带蛇绿岩套中基性岩体的相似性及围岩变形变质等特征 ,反映秧田坝 -十亩地构造直立带可能为勉略构造带一分支构造的东延。
Shimudi evjite rock body is the new basic rock body,found in later Paleozoic,which distributes in line along the tectonic vertical zone of Yangtianba Shimudi The lithochemical features indicate that it has features of mid ocean ridge tholeiite Based on the similarity of petrology,litho geochemistry between this suite and mid basic rock body of ophiolite suite in Sanchazi——Mianlue belt in the noth of Lueyang county,it is suggested that the tectonic vertical zone of Yangtianba Shimudi might be the branching eastward part of Mianlue tectonic belt
出处
《陕西地质》
2000年第1期9-13,共5页
Geology of Shaanxi
