阿尔泰山的泥炭丘

1979年在阿尔泰山勘察中发现数处泥炭丘,主要分布在哈拉斯湖口以东的喀拉库勒盆地及阿勒泰县城东北山地。 喀勒库勒盆地是由几个作北东延伸的小盆地组成,海拔2,100—2,200米,沿湖周围发育有泥炭丘构成的微地貌,在2—3公里范围内成群出现(照片1),多达200余个,泥炭丘高5—6米,直径可达15米,大部分保存完好,几乎全由泥炭组成,褐色或黑褐色,地表以下约1米深呈冻结状,含有少量苔藓植物,5—6米以下为冻土,是构成泥炭丘的核心。在盆地西部的泥炭丘多为单个存在(照片2),亦较稀少,其长轴与盆地方向一致,高度也变小,约2—4米。在盆地     

中国天山区花岗岩类的演化特征

天山区在构造上包括组成天山地槽褶皱系的北天山优地槽褶皱带、天山中间隆起带、南天山冒地槽褶皱带及塔里木地台北缘的库鲁克塔格断隆和柯坪断隆(图1).天山地槽的发展过程经历了中条—扬子旋回、加里东旋回、天山旋回(海西旋回)、印支一燕山旋回和喜马拉雅旋回.伴随地槽发展的每一重要阶段,均有程度不同和规模不等的岩浆侵入及喷发活动,而岩浆喷发及侵入活动往往与构造运动密切相关,并具多期、多次的     

遥感在矿产资源调查、合理开发规划、管理和保护工作中的应用

本文简要论述了我国矿产资源开发现状和存在问题以及进行合理开发规划、管理、保护的意义,回顾了遥感在矿产资源勘查、矿产资源不合理开发和资源破坏情况监测方面的应用,并论述了遥感在矿产资源合理开发规划、管理、保护方面应用的意义和作用。     

中国天山地区花岗岩类的基本特征

Since libration large-scale geological surveys have been made, revealing that the socalled “Tianshan granites” are a complex po]ycycle system of magmatic rocks. It consists mainly of the products of magmatic activities which took place in the differentstages of the Sangyang-Laliang cycle, the Caledonian cycle, the Hercynian cycle, the Indosinian-Yanshan cycle and the Himalaya cycle. The substantial part is composed of granodiorites and biotite granites in the Hercynian cycle. This paper provides a comprehensive discussion for the first time on the granitoid rocks of the Tianshan system in China. The architectonic element of this area consists of the entire Tianshan fold system within the territory of China, and parts of the Kalpin fault block and the Kuluktag fault block which are located in tbe border area in the north of the Tarim Basin. Morever, the petrology and geochemistry of granitoid rocks of different ages in this region are discussed as well. In conjunction with the development of the Tianshan gcosyncline, discussions also are made on the cvolution and the history of tectonic displacement of those granitoid rocks. The comparison between the granitoid rocks of different ages in respect to .their distribution patterns,petrological features, geochemistry, accessory minerals and minerogenetic specificity strongly shows that the evolution of Tianshan granitoid rocks is characterized as being from basic through acid to alkaline.     

促进乡镇集体矿山企业和个体采矿的发展

近几年来,乡镇集体矿山企业和个体采矿蓬勃发展,已成为我国采矿业中的一支不可忽视的力量.《矿产资源法》规定的“积极扶持、合理规划、正确引导、加强管理”是国家促进乡镇集体矿山企业和个体采矿发展的方针.这是一个有机的整体,要全面理解贯彻执行.