摘要
大别山地区的区域化探扫面工作采用水系沉积物测量方法按照全国统一的《区域化探扫面若干规定》要求完成。本文利用区域化探资料对大别山地区出露的主要变质地层和侵入岩的地球化学特征作一初步探讨,根据多元素分布的区域性差异,将全区划分为五个地球化学子区,分别反映不同的成岩环境和构造活动特点,为区内地质构造单元的划分及其界线的辩认提供了地球化学依据。并利用R型因子分析方法处理区域化探资料,进一步提取地球化学信息,深化推断解释工作,提高了地球化学资料对于基础地质研究的使用价值。
Dabieshan area has been covered by regional geochemical survey based on the sampling of stream sediments, and the geochemical information has been proved to be very helpful in solving some basic geological problems of the area. Goechemical characteristics of major Precambrian stratigraphic units and granitic intrusions are discussed and the whole area is divided into five sub-regions in this paper based on geochemical information. Many element distribution patterns may be related to tectonic units whereby they contribute to the recognition of large scale crustal structure such as boundaries of crustal units, suture zones. R-type factor analysis is also used to process geochemical data in order to interpret multiple geological-geochemical factors in the area.
出处
《安徽地质》
1993年第2期59-66,共8页
Geology of Anhui
关键词
地球化学
区域化探
成岩环境
大别山区
geochemistry, regional geochemical exploration, diagenetic setting, Dabieshan area.
