摘要
南秦岭东江口、柞水岩体位于南丹断裂带南侧，为华力西期岩基。通过1：5万地质填图，将东江口老体划分为5个岩石谱系单位，柞水岩体划分为3个岩石话系单位，共圈定出36个侵入体。分别建立了东江口超单元和排水超单元。依据接触关系，结构构造，包体特征确定了其侵入序次，构成了两个完整的“S”型岩浆演化序列，在岩石矿物组成、岩石化学成分、微量元素及稀土元素组成上，各具有明显的独特岩浆演化特征，分别形成于南秦岭晚古生代被动陆线构造环境。
Dongjiangkou and Zhashui rockbodies are located in south side of Shangdan fault zone,which belong to Variscan batholith. Through geological survey of the scale of 1: 50000, fiverock-lineage units of Dongjiangkou rockbody were divided, and thirty-three intrusive bodieswere delineated, Dongjiangkou and Zzhashui ultra-units were established,respectively. According to contact relationship, suture and texture and inclusion features, theintrusive sequence was determinated, which constitute of two compIete "S-type" magmaticevolution successions, formed in the structural setting of Paleozoic passive epicontinent insouthern Qinling, with special magmatic evolution features of mineral composition,lithochemical component, micro-elements and rare earth element composition.
出处
《陕西地质》
1999年第4期7-15,共9页
Geology of Shaanxi
关键词
南秦岭
东江口
排水岩体
岩石谱系单位
岩浆演化
southern Qinling
Dongjiangkou
Zhashui rockbody
rock-lineage unit
magmatic evolution
