鲁苏碱性岩套特征及其形成的构造背景

Characteristics and Structure-forming Background of Shandong-Jiangsu Alkalic Rocks Suite

摘要:

鲁苏碱性岩套是指分布于胶莱盆地内的富钾火山岩系和鲁苏混杂岩带中的富钠侵入岩系 ,它们形成于中生代晚期至新生代早期大陆碰撞造山作用之后的伸展构造背景 ,是拉张作用下上地幔部分熔融与陆壳隆升作用的产物

Abstract:

Shandong-Jiangsu alkalic rocks suite indicates the rich-potassium volcanic rocks distributing in Jiaolai basin and the rich-sodium intrusive rocks in Shandong-Jiangsu mixtite zone. It was formed by spreading structures backgroud after collision orogenics during the period of late Mesozoic to early Cenozoic, and it is the product partial melting of upper mantle and lifting of continental crust under tensile condition