摘要
Thispaperpresentsamethodofestablishingahydrothermalore-formingreactionsystem.Onthebasisofthestudyoffourtypicalhydrothermaldeposits,thefollowingconclusionsconcerninggeochemicaldynamiccontrollingduringhydrothermalmineralizationhavebeensionsconcerninggeochemicaldynaamiccontrollingduringhydrothermalmineralizationhavebeendrawn:(1)Theregionaltectonicactivitiescontroltheconcentrationanddispersionofelementsintheore-formingprocessintermsoftheireffectsonthethermodynamicnatureandconditionsoftheore-formingreactionsystem.(2)Duringhydrothermalmineralizationtheactivitesofore-bearingfaultscanbedividebintotwostages:thebrittlesplittingstageandthebrittle-toughtensingstage,whichwouldcreatecharacteristicallydifferentgeodynamicconditionsforthegeochemicalthermodynamicore-formingsystem.(3)Thehydrothermalore-formingreaactionsystemisanopendynamicsystem.Atthebrittlesplittingstagethesystemwassostronglysupersaturatedandunequilibratedastospeedupandenhancethecrystallizationanddifferentiationofore-formingfluids.Andatthebrittle-toughtensingstage,theore-formingsystemwasinaweaksupersaturatedstate;withdecreasingtemperatureandpressurethecrystallizationoforeformingmaterialwouldshowdown,anditcanberegardedasanequilibratedstate.(4)Inthelatesstagesofhydrothermalevolution,goldwouldbeconcentratedintheresidualore-formingsolution.Thepulsatingfractureactiviteinthisstageledtothecrushofpyriteoreanditwasthenfilledwithgold-enrichedsolution,forminghigh-grage“fissure”goldore.Thisore-formingprocesscouldbecalledthecouplingmechanismoforeformation.
出版日期
1996年04月14日（中国期刊网平台首次上网日期，不代表论文的发表时间）
