冀东南堡凹陷高尚堡潜山深层花岗质基岩的特征及成因  

Granitic Bedrock of Nanbao Depression East Hebei Province:Petrology and its Origin

作　　者：苏小鹏[1] 杨建业[1] 

机构地区：[1]西北大学地质学系,西安矿业学院地质学系

出　　处：《西北大学学报（自然科学版）》1995年第4期359-364,共6页Journal of Northwest University（Natural Science Edition）

摘　　要：通过对高参１井岩石化学、地球化学（含微量元素地球化学）及年代学的研究，确定本区花岗质基岩及其包体形成于地壳深部，并被上部地壳同化混杂。其原岩形成年代为２８．９Ｍａ，花岗质岩石为２５～２４Ｍａ；在２２～２０Ｍａ，１７～１５Ｍａ，１０～９Ｍａ间，由于受华北造台运动影响，本区花岗质岩石中发生过几次构造—热事件并遭受过强烈改造。On the base of study of petrochemistry trace element geochemistry and geochronology,thegranitic bedrock and it's inclusion in Nanbao depression of East Hebei is shown to be formed in thedeep part of crust and had been assimilated-mingled strongly in uper crust.The primary rock wasformed in 28. 9 Ma and granitic rock formed in 25～24 Ma. Being influenced by making-platform move-ment of Huabei in 22～20 Ma,17～15 Ma ,and 10～9M3 ,there were several tectono-thermal eventstake placed in this granitic bedrock and it was heavily reformed.

关 键 词：花岗岩 成因 基性岩 岩石化学 地球化学 

分 类 号：P619.222[天文地球—矿床学]