中国大型铜矿床类型、成矿环境与成矿集中区的潜力  

TYPES, METALLOGENIC ENVIRONMENTS AND POTENTIALITIES OF METALLOGENIC PROVINCES OF LARGE COPPER DEPOSITS IN CHINA

作　　者：王之田[1] 秦克章[1] 

机构地区：[1]中国有色金属工业总公司北京矿产地质研究所

出　　处：《矿床地质》1991年第2期119-130,共12页Mineral Deposits

摘　　要：本文通过对我国31个大型以上及56个中型铜矿床的综合调研并与国外对比得出如下结论:①中国陆壳是在几个古板块基础上增生起来的,大型铜矿成矿作用在空间上向板块边缘推移,在时间上越来越新。大型铜矿床多出现在地台边缘、增生褶皱带边缘和陆内断裂拗陷带边缘;②大型铜矿可分六大成矿期,以中生代最重要,次为新生代、中元古代;③我国地跨世界三大构造域,板块构造丰富多样,地壳运动频繁而又比较强烈。因此,就形成大型铜矿床的环境而言,内生成分较多的矿床类型比外生成分较多的矿床类型可能更为有利。大型铜矿床可分六大类型,斑岩型最有潜力,CuNi型有希望;④中国地台仅占陆壳面积约三分之一,固化较晚,且不稳定,不具备形成国外某些特大型-超大型铜矿的环境;⑤划分出16个成矿集中区、远景区,并指出其成矿环境,类型和潜力。Based upon a comprehensive investigation into 31 large and 56 mediumsized copper eposits in China in comparison with those abroad, this paper reaches the following onclusions:1. China's continental crust was formed by the accretion around several massifs hroughout the geological ages which led to the migration of the metallization of large copper eposits towards the margins of the old plate with the lapse of time. Therefore, China's large opper deposits mostly occur along margins of platform, accretionary fold belt and faulted wnwarping belt within the continental crust.2. The Chinese continent lies across the world's hree tectonic domains and is characterized by varied plate tectonic styles as well as frequent nd rather strong Crustal movements. Therefore, so far as the formation of large copper eposits s concerned, the environment seems to be more favorable for the deposits of mainly endogenic rigin than deposits dominated by exogenic origin. Of the six major types of large copper eposits in China, the porphyry type seems to have the largest potential, and the copper-nickel ype is also promising.3. There are six major metallogenic epochs for China's large copper eposits. Mesozoic is the most important epoch, and Cenozoic and Mesoproterozoic are next in mportance.. In China's continental crust, the platform region makes up 29.7％ in mass ercentage, and the rest is composed of folded regions, whereas in the global continental crust he platform region makes up 69.6％. The consolidation of China's continental crust took place ter than that of the platform and shield areas in other regions of the world, and China's latform is not stable. The metallogenic environments for giant copper belts such as the nvironments of the Archean-Neoproterozoic Canadian shield and Mesoproterozoic Central Africa re not likely to exist in China.5. The authors have assigned the large copper deposits in hina o 16 metallogenic provinces and prospects and pointed out their mineralizatoin types and otentialities.

关 键 词：铜矿 矿床 类型 成矿环境 

分 类 号：P618.410.7[天文地球—矿床学]