Sedlmentarp Sequence and Gold-Bearing Behaviour of the Mesozoic Coarse Clastic Member,Nortdeast Border of Jiaolal Basin
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摘要: 胶莱盆地属于晚中生代断陷盆地，东北缘广泛出露中生界的粗碎屑岩系。在对其进行详细的野外宏观描述、室内微观鉴定及样品含金量测试的基础上，研究了粗碎屑岩段的沉积物组成、沉积类型和微观特征，建立了该岩段在不同地区的垂向沉积层序及典型展序组合类型。不同的水动力条件是造成砾岩层内部结构复杂性变化的主要原因。通过与国内外有关资料的对比分析，指出研究区粗碎屑岩段形成于干旱、近源快速堆积的陆上冲积扇环境，且探讨了其含金性。Abstract: TheJiaolai basin is a Late Mesozoic fault basin anud has an extensive outcroping coerae elastic system is its narthasst border. Based.the minutefiled macroexamination indoor macroexamination and gold-conbeat test on the trsc an the casxx daatic naennbar a the utudy area,thedeposits and established thdr sedimentary eequenceb acrd types of ssome typical dspositional associations in the diffrrent.it was suggested that different dspositional hydrodynamic candition is the main reason causingthe complicated icated chasrge texture in a xonglomerate bed By comparing domestic and aborad information,thispaper poinred out that the clatatec rnembar forms in a dry. prcaumal quickly-accumulattedsubaerial slludiel fan environment ,and it also probed into the gold-bearing behaviour of this member.
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[1] 1 陈光远，邵伟，孙岱生.胶东金矿成因矿物学与找矿.重庆:重庆出 版社，1989. 51-93
2 裘有守等.山东招远一掖县地区金矿区域成矿条件.沈阳:辽宁科 学技术出版社，1988. 1-30
3 山东省地质矿产局.山东省区域地质志.北京:地质出版社，1991. 514-523
4 李思田主编.断陷盆地分析与煤聚积规律.北京:地质出版社， 1988. 32-111
5 Nemec W,Steel R J. Alluvial and coastal conglomerates,Their sig- nificant features and some comments on gravelly mass-flow de- posits. in,Koster E H,Steel R ],eds. Sedimentology of Gravels and Conglomerates. Canadian Society of Petroleum Geologists. Memoir. 199410,1-13
6 Willam B Bull. Recognition of alluvial-fan deposits in the strati- graphic record.ln, Nikon H Toned. Modern and Ancient Alluvial Fan Deposits. 1985. 340--359
7 Wu Chonglong,Li Sitian.Cheng Shoutian. Humid-type alluvial-Ean deposits and associated coal seams in the Lower Cretaceous Haozhou Formation. Fuxin Basin of northeastern China. In, Geological Soci- ety of America Special Paper. 1992. 269-285
8 Blissenbach Erich. Geology of alluvial fans in semiarid regions.ln, Nikon H Tor, ed. Modern and Amcient Alluvial Fan Deposits. 1985. 49--65
9 Ivochel R Craig. Humid fans of the Appalachian Mountains. In; Rachocki A H, Church M, eds. Alluvial Fans-A Field Approach. 1990. 109-129
10 杨尔煦等.国外黄金矿床译文集.北京:冶金工业出版社，1985. 10-48
11 G devries Ivlein编著.砂岩沉积模式与能源矿产勘探.李思田等 译.北京:地质出版社，1989. 5-37 -
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