扬子地块西南缘大面积低温成矿时代
Epoch of large-scale low-temperature mineralizations in southwestern Yangtze massif
查看参考文献56篇
|
文摘
|
中国西南地区（川、滇、黔、桂、湘）发育有世界上很典型的低温成矿域，其面积之大（约90万km~2）、包含的矿种之多（Au、Hg、Sb、As、P、Pb-Zn、U、Ni-Mo-PGE、重晶石、冰州石和分散元素等）、矿床组成和组合之复杂，在全球十分鲜见。扬子地块西南缘是中国西南大面积低温成矿域的重要组成部分。近年来，作者采用Rb-Sr、Sm-Nd、Ar-Ar等多种同位素定年方法，对扬子地块西南缘产出的磷矿、金矿、锑矿等低温矿床的成矿时代进行了较系统的研究。文章总结了这些研究成果，并结合前人的资料，初步拟定出该区存在三期大规模低温成矿作用，它们分别相当于晚元古代—早古生代（晚震旦世—早寒武世）、晚加里东期（晚志留世—早泥盆地）和燕山期（晚侏罗世—中白垩世）。该区的磷矿、重晶石矿和黑色页岩中的镍钼铂矿主要形成于晚元古代—早古生代，同位素年龄主要为585～540Ma；赋存于前寒武纪浅变质碎屑岩中的金-锑-钨矿床主要形成于晚加里东期，同位素年龄主要为435～380Ma；产于寒武系以后地层中的锑矿床主要是在中燕山期成矿，同位素年龄主要为160～140Ma；而该区的卡林型金矿和汞矿主要在燕山中晚期大规模成矿，同位素年龄主要为170～80Ma。 |
|
其他语种文摘
|
There exists a typical low-temperature metallogenic domain in southwestern China,which covers Sichuan,Yunnan,Guizhou,Guangxi and Hunan.As a unique region in the world,this domain is characterized by its large area(about 900 000 km~2),many kinds of mineralization(Au,Hg,Sb,As,P,Pb-Zn,U,Ni-Mo-PGE,barite,calcspar,and dispersed elements),and complicated compositions and associations of ore deposits.The southwestern Yangtze massif is an important part of the low-temperature metallogenic domain in southwestern China.In recent years,the authors have systematically studied the metallogenic epochs of P,Au,Sb low-temperature mineralizations in southwestern Yangtze massif by using Rb-Sr,Sm-Nd,and Ar-Ar isotopic geochronolgical dating methods.With the combination of previous data,this paper has summarized the dating results and pointed out that there exist roughly 3 stages of large-scale low temperature mineralization,which are equivalent to Late Proterozoic-Early Palaeozoic(Late Sinian-Early Cambrian),Late Caledonian(Late Silurian-Early Devonian)and Yanshanian(Late Jurassic-Middle Cretaceous).The phosphorite deposits,barite deposits and Ni-Mo-PGE deposits in the area were formed mainly in Late Proterozoic-Early Palaeozoic,with isotopic ages mainly ranging from 585 Ma to 540 Ma.The Au-Sb-W deposits hosted in the Precambrian low metamorphic clastic rocks were mainly formed in Late Caledonian,with isotopic ages mainly ranging from 435 Ma to 380 Ma.The Sb deposits hosted in post-Cambrian strata were mainly formed in Middle Yanshanian,with isotopic ages mainly ranging from 160 Ma to 140 Ma.The Carlin-type gold mineralization and the Hg mineralization in the area were mainly formed in Middle and Late Yanshanain period,with isotopic ages ranging from 170 Ma to 80 Ma. |
|
来源
|
矿床地质
,2007,26(6):583-596 【核心库】
|
|
关键词
|
地质学
;
扬子地块西南缘
;
低温成矿作用
;
成矿时代
;
晚元古代-早古生代
;
晚加里东期
;
燕山期
|
|
地址
|
1.
中国科学院地球化学研究所, 矿床地球化学国家重点实验室, 贵州, 贵阳, 550002
2.
南京大学地球科学系, 江苏, 南京, 210093
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
0258-7106 |
|
学科
|
地质学 |
|
基金
|
国家973计划
;
国家自然科学基金
|
|
文献收藏号
|
CSCD:3111665
|
参考文献 共
56
共3页
|
|
1.
Barfod G H. New Lu-Hf and Pb-Pb age constraints on the earliest animal fossils.
Earth Planetary Science Letters,2002,201:203-212
|
被引
32
次
|
|
|
|
|
2.
Chen D F. Pb-Pb ages of Neoproterozoic Doushantuo phosphorites in South China:Constraints on early metazoan evolution and glaciation events.
Precambrian Research,2004,132:123-132
|
被引
21
次
|
|
|
|
|
3.
Horan M F. Rhenium and osmium isotopes in black shales and Ni-Mo-PGE-rich sulfide layers Yukon Territory Canada and Hunan and Guizhou Province China.
Geochimica et Cosmochimica Acta,1994,58:257-265
|
被引
34
次
|
|
|
|
|
4.
Hu R Z. Geology and geochemistry of Carlin-type gold deposits in China.
Mineralium Deposita,2002,37(3):378-392
|
被引
81
次
|
|
|
|
|
5.
Knoll A H. On the age of the Doushantuo Formation.
Acta Micropalaeontologica Sinica,1999,16:225-236
|
被引
17
次
|
|
|
|
|
6.
Mao J W. Re-Os dating of polymetallic Ni-Mo-PGE-Au mineralization in Lower Cambrian black shales of South China and its geologic significance.
Econ Geol,2002,97:1051-1061
|
被引
83
次
|
|
|
|
|
7.
Peng J T. Sm-Nd isotope dating of hydrothermal calcites from the Xikuangshan antimony deposit Central Hunan.
Chinese Science Bulletin,2002,47(13):1134-1137
|
被引
10
次
|
|
|
|
|
8.
Peng J T. Scheelite Sm-Nd dating and quartz Ar-Ar dating from the Woxi Au-Sb-W deposit Western Hunan.
Chinese Science Bulletin,2003,48(23):2640-2646
|
被引
29
次
|
|
|
|
|
9.
方维萱. 大河边－新晃超大型重晶石矿床地球化学特征及形成的地质背景.
岩石学报,2002,18(2):247-256
|
被引
45
次
|
|
|
|
|
10.
俸月星. 徐文火斤.
矿产与地质,1993,7(2):119-126
|
被引
15
次
|
|
|
|
|
11.
胡清洁. 新晃贡溪超大型重晶石矿床的岩石学特征与沉积成岩作用.
湖南地质,1997,16(2):106-111
|
被引
17
次
|
|
|
|
|
12.
胡瑞忠. 滇黔桂三角区微细浸染型金矿床成矿热液一种可能的演化途径:年代学证据.
矿物学报,1995,15(2):144-149
|
被引
53
次
|
|
|
|
|
13.
花永丰. 贵州万山超大型汞矿成矿模式.
贵州地质,1996,13(2):161-165
|
被引
6
次
|
|
|
|
|
14.
李朝阳. 中国低温热液矿床集中分布区的一些地质特点.
地学前缘,1999,6(1):163-170
|
被引
22
次
|
|
|
|
|
15.
李胜荣. 湘黔下寒武统铂族元素来源与矿化年龄的Re-Os同位素制约.
中国科学(D辑),2002,32(7):565-575
|
被引
1
次
|
|
|
|
|
16.
黎盛斯.
湖南金矿地质概论,1991
|
被引
6
次
|
|
|
|
|
17.
李泽琴. 桂西金牙微细浸染型金矿同位素地球化学研究.
矿物岩石,1995,15(2):66-72
|
被引
13
次
|
|
|
|
|
18.
刘东升. 我国卡林型金矿矿物特征及成矿条件探讨.
地球化学,1985,14(3):277-282
|
被引
10
次
|
|
|
|
|
19.
刘建明. 华南巨型锑矿带中的Sedex 型锑矿床.
矿床地质,2002,21(增刊):169-172
|
被引
6
次
|
|
|
|
|
20.
刘继顺. 关于雪峰山一带金成矿区的成矿时代.
黄金,1993,14(7):7-12
|
被引
17
次
|
|
|
|
|
了解气象卫星更多信息，请访问