The Muruntau gold deposit in the Central Kyzylkum,Uzbekistan is one of the largest single gold deposits worldwide.Data available from the literature are reviewed with the aim to（1） integrate the present knowledge on...The Muruntau gold deposit in the Central Kyzylkum,Uzbekistan is one of the largest single gold deposits worldwide.Data available from the literature are reviewed with the aim to（1） integrate the present knowledge on this unique deposit from Russian and English literature;（2） show the considerable progress made in the understanding of the genesis of the Muruntau deposit during the last decades;and（3） point to problems still open for future research.Deposit formation occurred through a multi-stage process involving sedimentation,regional metamorphism including thrusting,magmatism with formation of hornfels aureoles and several stages of hydrothermal activity.According to recent knowledge,synsedimentary or pure metamorphic formation of gold mineralization seems unlikely.The role of granite magmatism occurring roughly within the same time interval as the main hydrothermal gold precipitation remains uncertain.There are no signs of interaction of matter between the magma（s） and the hydrothermal system（s）.On the other hand,there was an intense,high-temperature（above 400 ℃）fluid- wall rock interaction resulting in the formation of gold-bearing,cone-like stockworks with veins,veinlets and gold-bearing metasomatites.Several chemical and isotope indicators hint at an involvement of lower-crustal or mantle-related sources as well as of surface waters in ore formation.Deposit formation through brecciation involving explosion,hydrothermal or tectonic breccias might explain these data.Further investigations on breccia formation as well as on the exact timing of relevant sedimentary,metamorphic,magmatic and hydrothermal events are recommended.展开更多
利用美国陆地资源卫星--Landsat系列多平台、多分辨率、多时相的卫星遥感(RS)资料、全球定位系统(GPS)数据和地理信息系统(GIS)技术,通过'3S'技术集成,精确地给出了乌兹别克斯坦共和国穆龙套金矿床中心位于东经64°35'...利用美国陆地资源卫星--Landsat系列多平台、多分辨率、多时相的卫星遥感(RS)资料、全球定位系统(GPS)数据和地理信息系统(GIS)技术,通过'3S'技术集成,精确地给出了乌兹别克斯坦共和国穆龙套金矿床中心位于东经64°35'、北纬41°29'40',主矿体位于东经64°33'30'～64°36'、北纬41°29'15'～41°30'30'范围;揭示了该矿床最近约30年的开采历史:采场由1978年的1.67 km2 扩大到1992年的4.14km2,但是直至2001年采场面积仅增加0.94km2,为5.08km2.作者认为这是一种'足不出户'了解和辩识异域典型矿床某些特征的有效途径.展开更多
基金supported by several grantsfrom DAAD,DFG(Wo 489/15-1,15-2KL 692/11-1,11-2)+1 种基金NSERC,NHM CERCAMS,IGCP(IGCP-473)the IGCP project 592 sponsored by IUGS and UNESCO
文摘The Muruntau gold deposit in the Central Kyzylkum,Uzbekistan is one of the largest single gold deposits worldwide.Data available from the literature are reviewed with the aim to（1） integrate the present knowledge on this unique deposit from Russian and English literature;（2） show the considerable progress made in the understanding of the genesis of the Muruntau deposit during the last decades;and（3） point to problems still open for future research.Deposit formation occurred through a multi-stage process involving sedimentation,regional metamorphism including thrusting,magmatism with formation of hornfels aureoles and several stages of hydrothermal activity.According to recent knowledge,synsedimentary or pure metamorphic formation of gold mineralization seems unlikely.The role of granite magmatism occurring roughly within the same time interval as the main hydrothermal gold precipitation remains uncertain.There are no signs of interaction of matter between the magma（s） and the hydrothermal system（s）.On the other hand,there was an intense,high-temperature（above 400 ℃）fluid- wall rock interaction resulting in the formation of gold-bearing,cone-like stockworks with veins,veinlets and gold-bearing metasomatites.Several chemical and isotope indicators hint at an involvement of lower-crustal or mantle-related sources as well as of surface waters in ore formation.Deposit formation through brecciation involving explosion,hydrothermal or tectonic breccias might explain these data.Further investigations on breccia formation as well as on the exact timing of relevant sedimentary,metamorphic,magmatic and hydrothermal events are recommended.
文摘利用美国陆地资源卫星--Landsat系列多平台、多分辨率、多时相的卫星遥感(RS)资料、全球定位系统(GPS)数据和地理信息系统(GIS)技术,通过'3S'技术集成,精确地给出了乌兹别克斯坦共和国穆龙套金矿床中心位于东经64°35'、北纬41°29'40',主矿体位于东经64°33'30'～64°36'、北纬41°29'15'～41°30'30'范围;揭示了该矿床最近约30年的开采历史:采场由1978年的1.67 km2 扩大到1992年的4.14km2,但是直至2001年采场面积仅增加0.94km2,为5.08km2.作者认为这是一种'足不出户'了解和辩识异域典型矿床某些特征的有效途径.
