新疆北山西段裂谷演化及金矿成矿规律
The Rift Evolution and Metallogenic Regularities of Gold Ores of the Western part of Beishan in Xinjiang
-
摘要: 新疆北山裂谷构造带,呈北东东—北西西向展布,是在塔里木地块太古界、元古界的基础上开裂演化而成,总体呈两地块夹裂谷的构造格局,经历了-C、O—S、C—P3次大规模的裂开与闭合、由南向北迁移的演化模式。在该裂谷带晚古生代沉积盖层中分布着一系列不同类型的金矿(点),并划分了多个Au成矿亚带。笔者所论为新疆北山晚古生代金(铜)级成矿带金矿的成矿规律。根据赋矿岩系划分为6类,矿石建造划分为4类,分别为石英脉型、破碎蚀变岩型、破碎蚀变岩型+石英脉型、中酸性岩浆热液型,以石英脉+破碎蚀变岩型为主。控矿因素为沉积建造(火山岩-碎屑岩及碳质岩系)、韧-脆性断裂、岩浆岩等;成矿时代为华力西晚期、印支期、燕山期和喜马拉雅期,成矿作用与各期构造活动同步或准同步。Abstract: The continental rift tectonic belt of western Beishan in Xinjiang province was occurred on the basis of Archean-Proterozoic layers of Tarim block, bearing a block-rift-block,tectonic pattern, which along NEE-NWW had ever underwent 3 distinct large-scale convergence and disconvergence events as well as evolution model changed from South to North in ∈,O-S、C-P, respectively. There were many distinct types of Au ores exposed in the Pelaozoic deposits, and contained many of Au-metallogenic subzone. The discussion presented in this paper is the Pelaozoic Vlevel Au-Cu metallogenic regularity of Beishan in Xinjiang province1 For ore-hosting rock types it can divide in to six types,the ore-bearing rocks were composed of 4 distinct types:quartz vein,cataclastic alteration,quartz vein and cataclastic a lteration, in termediateacid magmatic hydrothermal,among of which the quartz vein and cataclastical teration was a domination. The ore-controlling factors were stratig raphy formation,lithological formation(volcanic rock, clastic rock and Ca rbonaceous series),ductile-brittle fracture,magmatic rock and so on,the first three types are mainly. Mineralization epochis Hercynian,Indo-Chinese and Himalayan,and the tectonic movement is synchronize with the Hercynian.
-
-
李文渊,董福辰,等.西北地区重要金属矿产成矿特征及其找矿潜力[J].2006,39(2):1-16.
梅友松,王京彬,等.成矿规律研究总结概论[J].国土资源科技管理,2000,(5):59-61.
西安地质矿产研究所.西北地区矿产资源找矿潜力[M].北京:地质出版社.2006.
夏林圻,李向民,等.天山石炭-二叠纪大火成省裂谷火山作用与地幔柱[J].西北地质,2006,39(1):1-49.
校佩羲,黄玉华,等.新疆北山南部地区石炭-二叠纪岩石地层单位厘定及沉积环境分析[J].西北地质,2006,39(1):76-83.
杨合群,李英,等.北山造山带的基本成矿特征[J].西北地质,2006,39(2):78-95.
周济元,崔柄芳,等.甘新北山东段裂谷演化及金矿成矿规律[J].火山地质与矿产,2000,21(1):7-16.
朱裕生,肖克炎,等.成矿区带的划分和成矿远景区圈定要求的讨论[J].中国地质,2000,277(6):41-43.
LI Wenyuan,DONG Fuchen,et al.Metallogenetic characteristics and prospecting potential of major metallic minerals in Northwest China)[J].Northwestern Geology,2006,39(2):1-16.
MEI Yousong,WANG Jingbin,et al.The discussion of metallogenic regularity research[J].Scientific and Technological Management of Land and Resources,2000,(5):59-61.
Xi'an Institute of Geology Mineral Resources.Prospecting potential of major metallic minerals in Nothwest China[M].Geological Publishing House,Beijing,2006.
XIA Linqi,LI Xiangmin,et al.Carboniferous-permian rift-related volcanism and mantnle plume in the Tianshan,Northwestern China[J].Northwestern Geology,2006,39(1):1-49.
XIAO Peixi,HUANG Yuhua,et al.Analysis of sedimentary environment and ascertainment of Carboniferous-Permian Lithostratigraphic Uint in South area of Beishan,Xinjiang[J].Northwestern Geology,2006,39(1):76-83.
YANG Hequn,LI Ying,et al.Main Metallogenic Characteristics in the Beishan orogen[J].Northwestern Geology,2006,39(2):78-95.
ZHOU Jiyuan,CUI Bingfang,et al.The rift evolution and gold mine metallogenic regularity of eastern of Beishan in Gansu-Xinjiang[J].Volcanology and Mineral Resources,2000,21(1):7-16.
ZHU Yusheng,XIAO Keyan,et al.The discussion of division of metalloigenic districts and request of selecting the key metallogenic perspective area[J].Geology in China,2000,277(6):41-43.
-
计量
- 文章访问数: 2424
- PDF下载数: 3228
- 施引文献: 0
下载: