不同尺度的CMF模式及其应用2课件

各类流体成矿系统的全球构造-CMF模式

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矿床矿体尺度

成因

模型CMF模式:矿床或矿体尺度结构模型&HYChenetal.(2000)ModifiedafterHYChenetal.(2000)andRuietal.(2002)阿勒泰东准噶尔刊于：ChenYJ(1997)ActaGeologicaSinica,71,69-71.证据/应用证据与应用西准噶尔DistributionoforebodiesintheSawayardungoldorefield,SouthwestChineseTianShan证据与应用南天山CasestudyTheWangfenggoldDepositSamplestage18OQ18OWDT(℃)B010E12.2>10.4-79>535W01E12.18.5-84423(382－452)W04E13.29.2-78403(381－503)T38E13.19.1-79403*(W04)W03E,M13.68.9-87373(273－426)AverageE9.2-81W02M,E12.45.8-96307(241－535)W06M,E11.96.5-94348(286－381)W10M,E13.56.0-92283(205-457)W11M12.85.7-81294(250－357)W12M12.64.5-100294(250－357)AverageM5.7-93B012L12.61.3-72206T33L13.21.9206AverageL1.6-72Dand18OoforefluidsofVein12(‰)CasestudyCasestudyNo.sampleCO2/CH4CH4/COCO2/CO(H2+CH4+CO)/CO213CCO2T91Qofore4.410.763.370.5226.2T33Qofore2.313.518.110.5612.2T38Qofore1020.2323.310.059.4B010E-stageQvein1423.645180.01-0.1B012Qofore2790.0821.50.059.2B34-2Qofore09.230.11-2.5B038L-stageQvein58.10.4325.10.060.413CoforefluidsoftheWangfenggolddeposit(‰)No.T-34B034-1B-016T-91B-036T-33T96averageNo.ofveins1231123131123134S‰13.42.712.22.92.811.43.77.05206Pb/204Pb18.22918.40818.14718.44518.38717.22018.30218.302207Pb/204Pb15.56015.57915.48315.60815.56315.42715.57315.545208Pb/204Pb38.02138.23737.88238.28738.15637.17738.16738.108Casestudy34S(‰)andLeadisotoperatiosoforesoftheWangfenggolddepositFluidinclusionsofquartzseparatesfromores

Rb-Srisochronage:277.058.8Ma

ISr＝0.73000.0006；Host-rock(mylonitizedgranitoids)

Rb-Srisochronage:31010Ma

ISr＝0.72640.0007CasestudyTimingofmetallogenesisoftheWangfenggolddepositConclusions:Oreformedsyncollisionally,postdatesoceanicclosure(>322Ma)by45Ma;Oremetalssourcedfromcrust,esp.SEDIMENTS