中国区域地质2001，Vol.20Issue(1)：100-106,7.
北淮阳燕山期岩浆岩地球化学特征及其构造环境
Geochemical characteristics of Yanshanian magmatic rocks in north Huaiyang and their tectonic environment
林银山 1郭福生 1辜骏如 2梁鼎新 1吴培琦1
作者信息
摘要
Abstract
Magmatic rocks are widely distributed in the Yanshanian north Huaiyang fault basin． The Upper Jurassic volcanic rocks consist mainly of andesitic and trachytic pyroclastic rocks， and their source magma shows an evolution trend from intermediate to alkaline． The south and north belts may be distinguished： the south belt is dominated by intermediate rocks， while trachytic pyroclastic rocks increase in the north belt． The intrusion， which is regarded as having been derived from a common parent magma with the volcanic rocks， consists of gabbro diorite granite alkali granite， and obviously has the characteristics of I-type granite． The Yanshanian north Huaiyang magmatic belt resulted from large-scale intracontinental subduction of the Yangtze and Huaibei massifs．关键词
北淮阳/岩浆岩/稀土元素/微量元素/铅同位素/构造环境分类
天文与地球科学引用本文复制引用
林银山,郭福生,辜骏如,梁鼎新,吴培琦..北淮阳燕山期岩浆岩地球化学特征及其构造环境[J].中国区域地质,2001,20(1):100-106,7.
