自然科学版 英文版
自然科学版 英文版
自然科学版 英文版
自然科学版 英文版
英文版编委
自然科学版 英文版
英文版首届青年编委

您目前所在的位置:首页 - 期刊简介 - 详细页面

中南大学学报(自然科学版)

Journal of Central South University

第46卷    第7期    总第251期    2015年7月

[PDF全文下载]    [Flash在线阅读]

    

文章编号:1672-7207(2015)07-2693-08
广东大宝山多金属矿的成矿模式
戴塔根1, 2,尹学朗1, 2,张德贤1, 2

(1. 中南大学 有色金属成矿预测教育部重点实验室,湖南 长沙,410083;
2. 中南大学 地球科学与信息物理学院,湖南 长沙,410083
)

摘 要: 大宝山多金属矿床是南岭中段粤北中部多金属成矿区带上的重要矿床,对其次英安斑岩体和花岗闪长斑岩体及地层围岩中矿化元素进行研究,并研究其微量和稀土元素、硫同位素、铅同位素、O和H和同位素、大宝山多金属矿床可能的形成过程,建立该矿床的成矿模式。研究结果表明:次英安斑岩体和花岗闪长斑岩体及地层围岩中矿化元素均为矿化元素的来源;矽卡岩矿体的形成受花岗闪长斑岩体岩浆作用的影响较大,似层状铜铅锌矿体主要源于当时的海底喷流热液,薄层状菱铁矿体与东岗岭组地层有成因上的联系,亦受斑岩体岩浆活动改造的影响;似层状铜铅锌矿体的形成与海底火山-热液活动有关;斑岩型和矽卡岩型矿体的硫主要来自与斑岩体相关的深部岩浆;铅的来源较复杂,但主要源于上地壳,少量铅具深源特性;斑岩型钨钼矿体和矽卡岩型钨钼矿体的成矿流体来自岩浆水与少量大气降水混合源;似层状铜矿体与铅锌矿体的成矿流体来源不同,薄层状菱铁矿体的成矿流体以海底喷气作用形成的热卤水为主。

 

关键词: 大宝山多金属矿床;成矿物质;稀土元素;微量元素;矿化元素;流体;成矿模式

Ore-forming model of Dabaoashan poly-metal deposit in Guangdong Province
DAI Tagen1, 2, YIN Xuelang1, 2, ZHANG Dexian1, 2

1. Key Laboratory of Nonferrous Metal Metallogenic Prediction of Ministry of Education,
Central South University, Changsha 410083, China;
2. School of Geosciences and Info-Physics, Central South University, Changsha 410083, China

Abstract:Dabaoshan Pb-Zn deposit, one of the important poly-metal deposits in North Guangdong Province, is situated in the central part of Nanling orogenic belt. The ore-forming model of Dabaoshan deposit was built based on the study of the formation process. The mineralization elements are intimately associated with secondary dacite-porphyry and granite-diorite-porphyry bodies. Characteristics of trace elements and REE show that skarn type orebody is closely related to granite-diorite-porphyry, but stratoid Cu-Pb-Zn is principally derived from sea floor fluid, and the layer siderite has close genetic relation to Dongganling formation and is overprinted by granite porphyry. Surfur isotope''''s study shows that the surfur of stratoid Cu-Cu-Zn comes from the sea floor hydrothermal system, and surfur of porphyry and skarn type ore are chiefly originated from deep-seated magma sources, which is generated from porphyry. Lead isotope’s study implies that lead is predominantly from upper crust but mixes with deep sources lead. The fluid of porphyry and skarn type orebody characterized by magmatic and minor meteoric waters is evidenced by hydrogen and oxygen isotopes. The fluids of stratoid Cu orebody and lead-zinc orebody are derived from various sources, and the fluids of layer siderite orebody are predominated by hot brine formed by submarine exhalation.

 

Key words: Dabaoshan poly-metal deposit; ore-forming matters; rare earth element (REE); trace element; mineralization element; fluids; ore-forming model

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
版权所有:《中南大学学报(自然科学版、英文版)》编辑部
地 址:湖南省长沙市中南大学 邮编: 410083
电 话: 0731-88879765(中) 88836963(英) 传真: 0731-88877727
电子邮箱:zngdxb@csu.edu.cn 湘ICP备09001153号