全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
地质学报  2010 

西藏谷露热泉型铯矿床年代学及意义

, PP. 211-220

Keywords: 热泉型铯矿床,U系法测年,硅华,谷露,西藏

Full-Text   Cite this paper   Add to My Lib

Abstract:

谷露间歇喷泉位于西藏那曲地区那曲县谷露乡西北的桑曲西岸,海拔4700~4750m左右,现今仍在强烈活动中,其以硅华为主的泉华沉积形成了热泉型中型硅华铯矿床,属印度-亚洲陆陆碰撞效应的产物。本文根据野外第四纪地质与地貌的系统调查研究,将硅华分为南、北两区共5套沉积。由泉胶砾岩组成的第Ⅰ套硅华下伏于南区大硅华台地之下,并越过桑曲而延伸至河东,构成倒数第二次冰期(爬然冰期)冰水沉积的基座。第Ⅱ套硅华组成南区的大硅华台地。由泉胶砾岩组成的第Ⅲ套硅华下伏于北区硅华台地之下,也越过桑曲延伸至河东,构成末次冰期(拉曲冰期)冰水沉积的基座。第Ⅳ套硅华构成北区硅华台地,已被一东西向小沟分为南、北两个小片,均由数列小的硅华锥组成。第Ⅴ套硅华则为现今仍在活动和堆积的硅华锥。根据9个样品的U系法测年结果,并参考野外地貌与第四纪地质的研究结果,可将这5套硅华的铯矿床的形成,划分为如下5个阶段:第1阶段虽暂缺年龄数据,但可按地貌部位和地层层序,判断其堆积于倒数第三次冰期(宁中冰期)以后,很可能为0.5~0.4MaB.P.之间的大间冰期早中期;第2阶段为0.38~0.25MaB.P.,相当于大间冰期晚期至爬然冰期早期;第3阶段为0.22MaB.P.前后的爬然冰期早期;第4阶段为108.6~17.2kaB.P.的晚更新世的末次间冰期晚期至拉曲冰期;第5阶段为5.3kaB.P.的全新世中期以来。由老到新,各期泉华的SiO2含量呈现出明显的降低趋势,而铯含量则呈升高趋势,是随着矿石中SiO2有序度的降低而其它成分被保留在晶格中所致。

References

[1]  王书来.2006.新疆富蕴县希勒库都克地区铜钼金矿预查报告.有色金属矿产调查中心(内部资料).
[2]  狄永军,赵海玲,吴淦国,等.2005.铜陵地区燕山期侵入岩成因与三端员岩浆混合作用.地质论评,51(5)5528~538.
[3]  杜杨松.1999.壳幔成矿学初探.矿床地质,18(4):341~346.
[4]  杜杨松,李学军.1997.安徽铜陵典型矿区岩石包体研究及其岩浆-成矿作用过程探讨.高校地质学报,3(2):171~178.
[5]  范洪海,王德滋,刘昌实,赵连则,沈渭州,凌洪飞,段芸.2001.江西相山潜火山岩中粹冷包体的发现及其成因机制探讨.地质学报,75(1);64~70.
[6]  侯增谦,杨竹森,徐文艺,莫宣学,丁林,高永丰,董方浏,李光明,曲晓明,赵志丹,江思宏,盂祥金,李振清,秦克章,杨志明.2006.青藏高原碰撞造山带,1、主碰撞造山成矿作用.矿床地质,25(4):337-358.
[7]  姜福芝,王玉往.2005.海相火山岩与金属矿床.北京:冶金工业出版社.
[8]  江思宏,聂凤军,胡朋,刘妍,赖新荣.2007.藏南基性岩墙群的地球化学特征.地质学报,81(1):60~71.
[9]  李昌年.2002.岩浆混合作用及其研究评述.地质科技成情报,21(4),49~54.
[10]  李昌年,薛重生,廖群安,等.1997.江西横峰县港边岩浆混合杂岩体岩石学研究及其成因探讨.地球科学-中国地质大学学报,22(3):261~267.
[11]  李宗怀,韩宝福,李辛子,杜蔚,杨斌.2004.新疆准噶尔地区花岗岩中微粒闪长质包体特征及后碰撞花岗质岩浆起源和演化.岩石矿物学杂志,23(3):214~226.
[12]  刘成东,张文秦,莫宣学,罗照华,喻学惠,李述为,赵欣.2002.东昆仑约格鲁岩体暗色微粒包体特征及成因.地质通报,21(11),739~744.
[13]  刘风山,石准立.1995.从闪长质岩石包体角度探讨太行山-燕山造山带壳幔成矿作用.矿床地质,14(3):206~215.
[14]  马昌前,王人镜,邱家骧.1992.花岗质岩浆起源和多次岩浆混合的标志:包体--以北京周口店岩体为例.地质论评,38(2):109~119.
[15]  孟繁聪,史仁灯,李天福,刘福来,许志琴.2006.南苏鲁晚中生代花岗岩的形成年龄及源区.地质学报,80(12);1867~1876.
[16]  莫宣学,罗照华,肖庆辉,等.2002.花岗岩类岩石中岩浆混合作用的认识与研究方法.见:肖庆辉,邓晋福,马大铨,等主编.花岗岩研究思维与方法.北京:地质出版社,55~63.
[17]  彭花明.1997.杨溪岩体中黑云母的特征及其地质意义.岩石矿物学杂志,16(3):271~281.
[18]  曲晓明,王鹤年.1997.郭家岭岩体壳幔岩浆混合作用与侵位机制动力学研究.地质科学,32(4):445~453.
[19]  芮宗瑶,刘玉琳,王龙生,王义天.2003.新疆东天山斑岩铜矿带及其大地构造格局.地质学报,76(1);83~94.
[20]  芮宗瑶,侯增谦,李光明,刘波,张立生,王龙生.2006.冈底斯斑岩铜矿成矿模式.地质论评,52(4);459~466.
[21]  王京彬,李博泉,张积斌,等.1999.额尔齐斯聚矿带金铜成矿条件及找矿预测.北京:冶金工业出版社,22~36.
[22]  王玉往,王京彬,王莉娟,等.2007.新疆尾亚地区石英二长闪长岩的岩浆混合成因.岩石学报,23(4),733~746.
[23]  徐惠长,龚述清,唐分配,胡志科,康卫清.2002.骑田岭岩体及其包体的地球化学特征和成矿意义.华南地质与矿产,(1):51~56.
[24]  Zheng Youye,Duo Ji,Cheng Shunbo,Gao Shunbao,Dai Fanghua.2007.Progress in porphyry copper exploration from the Gangdise belt,Tibet,China.Frontiers of Earth Science in China,1(2):226~232.
[25]  Zhong Hong,Yao Yong,Prevec S A,et al.2004.Trace-element and Sr-Nd isotopic geochemistry of the PGE-bearing Xinjie layered intrusion in SW China.Chemical Geology,203(3~4):237~252.
[26]  Zorpi M J,Coulon C,Orsini J B.1991.Hybridization between felsic and mafic magmas in calc-alkaline granitoids:a case study in northern Sardinia,Italy.Chemical Geology,92 (1/3):45~86.
[27]  芮宗瑶,张立生,王龙生,王义天.2002.斑岩铜矿与陆相火山活动.地震地质,25(增刊):78~87.
[28]  王之田,秦克章,张守林.1994.大型铜矿地质与找矿.北京:冶金工业出版社.
[29]  袁万明,莫宣学,喻学惠,罗照华.2000.东昆仑印支期区域构造背景的花岗岩记录.地质论评,46(2):203~211.
[30]  云平,范渊,莫位任,等.2003.海南岛晚中生代壳幔岩浆混合作用--来自闪长质淬冷包体的证据.华南地质与矿产,(2):30~35.
[31]  周?若.1994.花岗岩混合作用.地学前缘,1(1~2):87~97.
[32]  朱金初,黄革非,张配华,等.2003.湘南骑田蛉岩体莱岭超单元花岗岩侵位年龄和物质来源研究.地质论评,49(3):245-252.
[33]  Barbarin B.2005.Mafic magmatic enclaves and mafic rocks associated with some granitoids of" the central Sierra Nevada batholith,California:mature,origin,and relations with the hosts.Lithos,80:155~177.
[34]  Boynton W V.1984.Geochemistry of the rare earth elements:meteorite studies.In:Henderson P,ed.Rare Earth Element Geochemistry.Amsterdan:Elsevier Science Publishers,63~114.
[35]  Castillo P R.2006.An overview of adakite petrogenesis.Chinese Science Bulletin,51(3),257~268.
[36]  Cawthorn R G.2005.Pressure fluctuations and the formation of the PGE-rich Merensky and chromitite reefs,Bushveld Complex.Mineralium Deposita,40(2):231~235.
[37]  Du Yangsong.1999.Petrologic and mineralogic study of enclaves in plutons in the typical mining districts of Tongling,Anhui and its bearing on the process of magmatism-metallogeny.Chinese Journal of Geochemistry,18(3):208~218.
[38]  Emmanuel J M,Carranza,Martin H.2002.Where are porphyry copper deposits spatially localized? A case study in Benguet Province,Philippines.Natural Resources Research,11(1),45~59.
[39]  Galley A G.2003.Composite synvolcanic intrusions associated with Precambrian VMS-related hydrothermal systems.Mineralium Deposita,38(4):443~473.
[40]  Halter W E,Heinrich C A,Pettke T.2005.Magma evolution and the formation of porphyry Cu-Au ore fluids:evidence from silicate and sulfide melt inclusions.Mineralium Deposita,39(8):845~863.
[41]  Hartley A J,Rice C M.2005.Controls on supergene enrichment of porphyry copper deposits in the Central Andes,A review and discussion.Mineralium Deposita,40(5):515~525.
[42]  Paone A,Ayuso R A,Vivo B D.2001.A metallogenic survey of alkalic rocks of Mt.Somma-Vesuvius volcano.Mineralogy and Petrology,73(1~3):201~233.
[43]  Roberto Oyarzun,Alvaro Marquez,Javier Lillo,Ivan Lopez,Scrgio Rivera.2001.Giant versus small porphyry copper deposits of Cenozoic age in northern Chile:adakitic versus normal calc-alkaline magmatism.Mineralium Deposita,36(8),794~798.
[44]  Roman D C,Cashman K V,Gardner C A,Wallace P J,Donovan JJ.2005.Storage and interaction of compositiona Uyheterogeneous magmas from the 1986 eruption of Augustine Volcano,Alaska.Bulletin of Volcanology,68(3),240~254.
[45]  Tarkian M,Koopmann G.1995.Platinum-group minerals in the Santo Tomas Ⅱ (Philex) porphyry copper-gold deposit,Luzon Island,Philippines.Mineralium Deposita,30(1),39~47.
[46]  Thompson R N.1982.British Tertiary volcanic province.Scottish J.Geol.,18:49~107.
[47]  Willie P J,Cox K G,Biggar G M.1962.The habit of apatite in synthetic systems and igneous rock.Jour.Petrol.,3:238~243.
[48]  Zhang Lianchang,Xiao Wenjiao,Qin Kezhang,Zhang Qi.2006.The adakite connection of the Tuwu Yandong copper porphyry belt,eastern Tianshan,NW China:trace element and Sr-Nd-Pb isotope geochemistry.Mineralium Deposita,41(2):188~200.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133