华北陆块北缘区域矿床成矿谱系探讨

华北陆块北缘区域矿床成矿谱系探讨

陈毓川1, 薛春纪2, 王登红3, 李华芹4, 路远发4

1. 中国地质科学院，北京 100037; 2. 长安大学地球科学与国土资源学院，西安 710054; 3. 中国地质科学院矿产资源研究所，北京 100037; 4. 宜昌地质矿产研究所，宜昌 433003

收稿日期:2003-12-20 修回日期:2003-12-20 出版日期:2003-12-20 发布日期:2003-12-20

A Discussion on the Regional Mineralizing Pedigree of the Ore Deposits in the Northern Margin of the North China Landmass

CHEN Yuchuan1, XUE Chun-ji2, WANG Deng-hong3, LI Hua-qin4, Lu Yuan-fa4

1. Chinese Academy of Geological Sciences, Beijing 10037; 2. College of Earth Sciences and Land Resources, Chang'an University, Xi'an 710054; 3. Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 10037; 4. Yichang Institute of Geology and Mineral Resources, Yichang 433003

Received:2003-12-20 Revised:2003-12-20 Online:2003-12-20 Published:2003-12-20

摘要/Abstract

摘要： 区域矿床成矿谱系是区域成矿规律研究的重要内容，指一个区域内地质构造环境演化过程中成矿作用的演化及时空结构。在华北陆块北缘划分出18个矿床成矿系列，讨论了它们的分布特点。华北陆块北缘区域矿床成矿谱系证实该区域经历四个主要的地壳演化及成矿时期，依次出现太古宙克拉通矿床、元古宙陆内-陆缘裂陷带矿床、古生代陆间增生褶皱系和陆内盖层矿床、中生代构造-岩浆活动带矿床，存在三个(3000～2500Ma，1900～1400Ma和180～140Ma)成矿作用高峰。成矿谱系指示了从太古宙进入元古宙时，海水和大气的氧化还原电位明显升高的过程。成矿谱系研究意义重大。

Abstract: The metallogenic series is composed of a group of ore deposits that formed at the same tectonic unit and during certain tectonic period，and show the genetic relations．The metallogenic series type is made up of several metallogenic series that appear in the similar tectonic environment and possess generality and individuality．The evolution and distribution of the regional mineral deposits may be characterized by mineralizing pedigree which is the frontiers in the metallogenic series research．The importance and method of studying the mineralizing pedigree are discussed in this paper． The North China landmass experienced a 1ong crustal evolution history and is an important mineralizing region with evident ore-forming and prospecting potentiality．In this paper the mineralizing ages of many mineral deposits were determined and collected ，the important mineral deposits are tabled on the basis of ore-forming ages, 18 metallogenic series are classified and their distribution regularities are studied. The mineralizing pedigree research shows that this region mainly underwent 4 stages of crust evolution and the ore deposits were formed in the Archean shield，in the Proterozoic continental or margin rifts，in the Paleozoic proliferation fold belts and their covers，an d in the Mesozoic tectono-magrrmtic belt successively．With the proceeding crust evolution，the mineral deposit types tended to be diversified ，the mineralizing controls changed from “stratabound” to “magmatic rocks”．and the ore-formation processes tended to be more complex．There are 3 mineralizing peaks：the late Archean period, the end of the early Proterozoic to middle Proterozoic period, and the middle-late Jurassic-early Cretaceous period ．The mineralizing ages are concentrated at 3 000～2 500 Ma，1 900～1 400 Ma and 180～ 140 Ma, respectively． The mineralizing pedigree well responds to the crust evolution and indicates that the oxidation-reduction potential of the seawater and atmosphere was evidently increased from the Archean to the Proterozoic era in the northern margin of the North China landmass．

陈毓川, 薛春纪, 王登红, 李华芹, 路远发. 华北陆块北缘区域矿床成矿谱系探讨[J]. J4.

CHEN Yuchuan1, XUE Chun-ji2, WANG Deng-hong3, LI Hua-qin4, Lu Yuan-fa4. A Discussion on the Regional Mineralizing Pedigree of the Ore Deposits in the Northern Margin of the North China Landmass [J]. J4.