摘要
在1∶5万区域地质填图中,可利用γ能谱测量仪在现场测定各类侵入岩的U、Th、K含量,U/Th、K/Th、U/K比值和γ照射量率等参数。通过对地面γ能谱测量资料与区域地质特征的综合分析,将攀枝花地区侵入体划分为19个单元、6个超单元及一个超单元组合。还确认了色腰和矮郎河花岗岩为印支期,花滩花岗岩和同德闪长岩均为太古代古陆核的组成部分。
In the 1∶50 000 regional geological mapping, the gamma spectrometer has been used to determine on the spot the U,Th and K contents,U/Th,K/Th and U/K ratios and gamma irradiation rate of various types of intrusions.By means of an intergrated analysis of ground spectrometric data and regional geological features,the intrusions in the Panzhihua area are divided into 19 units,6 superunits and one superunit group.Besides,the authors consider the Seyao granite and Ailanghe granite to be of Indosinian age and the Huatan granite and the Tongde diorite to be the Archean products, both of which are component parts of a paleocontinental nucleus.
出处
《中国区域地质》
CSCD
1998年第3期317-321,333,共6页
Regional Geology of China
关键词
Γ能谱测量
区域地质填图
侵入体
岩石谱系单位
gamma spectrometry,regional geological mapping ,intrusion,hierachical units