Geochemical Characteristics and Tectonic Significances of Volcanic Rocks in Haizhou Group, Northern Jiangsu Basin
详细信息
- 责任者：Lu Yongde (Wuxi Research Institute of Petroleum Geology ; SINOPEC ; Wuxi 214151 ; China) ; Gao Changlin
- 刊名：Petroleum Geology & Experiment
- 出版年：2012
- 卷期：34(1)
- 关键词：火山岩 ; volcanic rocks ; 苏北盆地 ; Subei Basin
- 页码：p.62-65
- 图表：6 illus., 1 table, 12 refs.
- 分类号：1702
- issnNo：ISSN1001-6112
- isbnNo：CN32-1151/TE
摘要
In the Northern Jiangsu Basin,large amounts of volcanic rocks generated in the Haizhou Group during Late Proterozoic Era. Quartz keratophyre accounts for the largest proportion,spilite the second,and keratophyre the least. The volcanic rocks in the Haizhou Formation are rich in alkali and Na,and are characterized by bimodal distribution. The geochemical features of major,trace and rare elements indicate that the volcanic rocks formed in tensional environment,i.e. taphrogenic trough.They were related to the Rodinia Supercontinent during Late Proterozoic Era.