摘要
在区域地质调查基础上,依据岩浆活动特点,将华北陆块南缘燕山期岩浆活动自南向北划分为合峪—二郎庙—交口—祖师顶岩浆混合花岗岩带、四棵树—神林—黄山S型花岗岩带、太山庙—叶庄—角子山A型花岗岩带,认为华北陆块南缘存在一个完整的陆内造山岩浆演化旋回,造山作用经历了陆内俯冲地壳加厚隆起—地壳抬升走滑剪切—地壳伸展减薄三个阶段的构造岩浆演化过程,为重塑华北陆块南缘构造演化提供了岩浆作用方面的证据。
Based on the geological survey and the features of magmatic activity in the southern margin of the North China craton, the Jurassic (Yanshan Movement in China) magmation can be divided into three belts, named magmaˉmixed granitic, Sˉtype granitic and Aˉtype granitic from south to north, indicating an entire magmacyclothem for intraˉcratonic orogeny. These magmatic belts correspond to threeˉsteps of the orogenic evolution: thickening of crust by intraˉcontinental subducion, exhumation and strikeˉslip shearing, and thinning of crustal extension. The paper furnishes data of magmatism for tectonoic evolution in the southern margin of the North China craton.
出处
《地质调查与研究》
2004年第1期35-42,共8页
Geological Survey and Research
基金
中国地质调查局国土资源大调查项目(200113000013)
关键词
华北陆块南缘
燕山期
陆内造山作用
岩浆混合花岗岩
S型花岗岩
A型花岗岩
southern margin of the North China craton
Jurassic Movement (Yanshan Movement in China )
intraˉcontinent orogeny
magmaˉmixed granite
Sˉtype granite
Aˉtype granite
