新疆北部地区岩石生热率分布特征  

Characteristics of Heat Production Distribution in Northern Xinjiang

作　　者：倪守斌[1] 满发胜[1] 王兆荣[1] 黎彤[1] 

机构地区：[1]中国科学技术大学地球和空间科学系

出　　处：《中国科学技术大学学报》1999年第4期408-414,共7页JUSTC

基　　金：国家305 项目

摘　　要：在大量岩石样品分析数据和研究成果的基础上，系统分析了新疆北部地区不同时代、不同岩性和不同大地构造单元岩石生热率的分布特征，讨论了岩石生热率与大地构造单元地质特征之间的关系．根据岩石中 Ｋ、 Ｔｈ 、 Ｕ 的含量和地壳各结构层的岩石组成，计算了地壳各壳层放射性生热元素的含量，系统研究了新疆北部地区岩石与各时代地层的平均生热率及其变化．岩石生热率分布在一定程度上反映了区域基底生热元素的丰度和岩浆活动的强度．Based on abundent analysed data of rock samples and results from other reserches, the characteristics of heat production in rocks of different ages, lithology and tectonic units in Northern Xinjiang are demonstrated, and their relations close to the geological characteristics is discussed. Based on the contents of K, Th and U in rocks and rock composition of the crustal layers, the contents of K, Th and U in crustal layers are calculated.The heat production of rocks and the strata of various ages in Northern Xinjiang are studied. Heat production distribution reflects the abundance of heat producing elements in basement rocks and magma activities to a certain extent. In this paper, a preliminarily discussion is given on the temporal spatial distribution and geochemical characteristics of the elements in different systems.

关 键 词：生热元素 岩石 生热率 新疆 时空分布 

分 类 号：P584[天文地球—岩石学]