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  2006 

鄂尔多斯盆地东胜地区砂岩型铀矿成因探讨

, PP. 761-767

Keywords: 砂岩型铀矿,低温热液,鄂尔多斯盆地

Full-Text   Cite this paper   Add to My Lib

Abstract:

鄂尔多斯盆地是一个铀、煤、油、天然气共存的沉积盆地。通过电子探针、流体包裹体测温、扫描电镜、偏反光显微镜、煤的微量元素等方法综合分析,认为盆地北部东胜地区的侏罗系砂岩型铀矿属于与天然气还原有关的低温热液型铀矿床,其证据有:1铀石主要分布于充填在孔隙中或微裂缝内的黄铁矿晶体中,其次充填在伊/蒙混层中和钾长石溶孔内的黄铁矿中。2铀石中UO2约占70%,SiO2约为18%,另有极少量的Fe、Ca、Se、Pb、Cr、Ti等伴生元素。3包裹体流体势显示盆地中部的天然气向北东方向运移并大量散失,出现大量被漂白的砂岩;盆地内主砂体展布方向与流体运移方向一致。4天然气包体中见石盐子晶,砂岩胶结物和矿物表面见较多细小盐粒,次生包裹体温度多在140~170℃。5富含黄铁矿、黄铜矿、方铅矿、闪锌矿等低温热液矿物;具有水热蚀变现象(碳酸盐化、硅化、水云母化、黄铁矿化等)。6燕山运动期间岩层进入表生成岩阶段,利于富氧的地表水和来自地层深部的低温热液进入砂岩中,可见褐铁矿溶蚀、重晶石充填于钾长石溶蚀孔现象。

References

[1]  Di Yongqiang.2002.Preliminary discussion on prospecting potential for sandstone-type uranium deposits in Meso-Cenozoic basins,northern Ordos.Uranium Geology,18 (6):340 ~ 347 (in Chinese with English abstract).
[2]  Guo Zhongming,Zhang Jun,Yu Zhongping.1994.Characters of tectonic evolution of the Ordos oil-field.Petroleum Exploration and Development,21 (2):22~29(in Chinese with English abstract).
[3]  Liu Jianming,Liu Jiajan,Gu Xuexiang.1997.Basin fluids and their related ore deposits.Acta Petroigica et Mineral,16 (4):341 ~ 352(in Chinese with English abstract).
[4]  PriceL C.1993.Thermal stability of hydrocarbon sinnature:Limits,evidence,characteristics,and possible controls.Geochim,Cosmochim,Acta,1993,57:3261~3280.
[5]  Yang Dianzhong,Yu Man.2002.The Uranium organic geochemistry development.World Geology,21 (1):18 ~ 23 (in Chinese with English abstract).
[6]  Zhao Ruiquan.1998.Effect of microorganism and organic matters on sandstone type uranium mineralizations in interlayer oxidation zone in deposit No.512.Uranium Geology,14 (6):339 ~ 340 (in Chinese with English abstract).
[7]  赵孟为.1996.鄂尔多斯盆地油气生成与运移时间和运移方向的确定与勘探方向.石油实验地质,18(4):341.
[8]  朱西养,汪志亮,王志畅,等.2003.东胜砂岩型铀矿地球化学特征初探.地质地球化学,31(2):39-45.
[9]  陈祖伊.2002.亚洲砂岩型铀矿区域分布规律和中国砂岩型铀矿找矿对策.铀矿地质,18(3):129~137.
[10]  盖洛韦W E,霍布德D K.1989.陆源碎屑沉积体系在石油、煤和铀勘探中的应用.见:顾晓忠等译.北京:石油工业出版社,260~265.
[11]  胡明安.1997.地质热事件--有机质金属成矿作用的联系.地质科技情报,16(2):67~72.
[12]  柳益群,李文厚,冯乔.1997.鄂尔多斯盆地东部上三叠统含油砂岩的古地温及成岩阶段.地质学报,71(1):66~74.
[13]  米敬奎,肖贤明,刘德汉,等.2003a.利用储层流体包裹体的PTV特征模拟计算天然气气藏形成古压力--以鄂尔多斯盆地上古生界深盆气藏为例.中国科学(D辑),33(7):679-685.
[14]  王果,华仁民,秦立峰.2000.中、新生代陆相沉积盆地砂岩型铀矿床流体作用研究.高校地质学报,6(3):437~446.
[15]  Chen Yizu.2002.Regional distribution regularity of sandstone uranium deposits in Asian continent and prospecting strategy for sandstone uranium depodits in China.Uranium Geology,18(3):129~137(in Chinese with English abstract).
[16]  Dmitriyev S N,et al.1991.Au and Hg forms of occurrence in chgeleken peninsula Thermal Brines,Geochimiya,(6):835~841.
[17]  Hu Mingan.1997.Relations among the geological thermal events,organic matters and metallogenesis.geolohical Science and Technology Information,16 (2):67 ~ 72 (in Chinese with English abstract).
[18]  Liu Aiping,Zhong Zichuan.1999.Geochemical characteristics of uranium and the application to oil and gas exploration.Acta Petrolei Sinica,20(6):32~37(in Chinese with English abstract).
[19]  Mi Jingkui et al.2003b.Study on Upper-Paleozoic deep basin gas migration in Ordos using inclusion information.Acta Petrolei Sinica,24 (5):46 ~ 51 (in Chinese with English abstract).
[20]  Mi Jingkui et al.2003a.Simulation and calculation of ancient pressure of natural gas pool by pvt features of fluid inclusions in reservoirs:take the upper Paleozoic deep basin gas pool in Ordos basin as an example.Science in China(series D),33 (7):679~ 685 (in Chinese with English abstract).
[21]  Wang Guo,Hua Renmin,Qin Lifeng.2000.Study on fluid interaction of the sandstone type uranium.Geological Journal of China Universities 2000,6 (3):437 ~ 446 (in Chinese with English abstract).
[22]  Zhao Mengwei.1996.Timing oF hydrocarbon generation and migration and determination of migration direction as well as exploration direction in the Ordos basin.Experimental Petroleum Geology,18(4)341(in Chinese with English abstract).
[23]  Zhu Xiyang,Wang Yunliang,Wang Zhichang,Zhang Chengjiang,Liu Jianhua.2003.Trace element geochemistry of sandstone-type uranium deposits in Dongsheng area.Geology Geochemistry,31(2):39~45(in Chinese with English abstract).
[24]  狄永强.2002.试论鄂尔多斯北部中新生代盆地砂岩型铀矿找矿前景.铀矿地质,18(6):340~347.
[25]  郭忠铭,张军,于忠平.1994.鄂尔多斯地块油区构造演化特征,石油勘探与开发,21(2):22~29.
[26]  刘埃平,钟子川.1999.铀的地球化学特征及其在油气勘探中的应用.石油学报,20(6):32~37.
[27]  刘建明,刘家军,顾雪祥.1997.沉积盆地中的流体活动及其成矿作用.岩石矿物学,16(4):341~352.
[28]  米敬奎,肖贤明,刘德汉,等.2003b.利用包裹体信息研究鄂尔多斯盆地上古生界深盆气的运移规律.石油学报,24(5):46~51.
[29]  杨殿忠,于漫.2002.铀有机地球化学研究进展.世界地质,21(1):18~23.
[30]  赵瑞全.1998.微生物和有机质在512层间氧化带砂岩型铀矿中的作用.铀矿地质,14(6):339~340.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133