本文選題：山神府花崗巖 + 熔-流包裹體�。� 參考：《地球科學》2016年01期

【摘要】：通過內(nèi)蒙古紅彥鎮(zhèn)地區(qū)山神府花崗巖的包裹體研究來探討巖漿-熱液過渡階段的流體特征和成礦潛力.研究表明,山神府花崗巖包裹體類型可分為熔融包裹體、熔-流包裹體和流體包裹體3大類.熔-流包裹體的存在表明花崗巖經(jīng)歷巖漿-熱液過渡階段,而巖體中心相-邊緣相流體包裹體均一溫度從281℃變化到大于550℃,鹽度從1.1%NaCl eqv變化到大于66.8%NaCl eqv同樣指示了這一特征.根據(jù)不同溫度、鹽度包裹體等容線和水飽和花崗質(zhì)巖漿固相線相交法可計算巖漿出溶流體溫壓范圍,結(jié)合CO_2三相包裹體對巖體最小侵位壓力有較好限制,估算出山神府花崗巖最小侵位深度為7.6~9.5km,出溶溫度為580~700℃,出溶深度集中在6.0~14.9km.包裹體拉曼特征表明,熔-流包裹體固相成分含有重晶石、藍銅礦和赤鐵礦等強氧化性物質(zhì),說明巖漿-熱液體系具有高氧逸度,而在高溫高壓高鹽條件下非常有利于巖漿中Cu等金屬向出溶流體中富集,結(jié)合野外礦化蝕變特征,分析得出山神府地區(qū)具有較好尋找?guī)r漿熱液型Cu礦床的成礦潛力.
[Abstract]:Through the study of the inclusions in the granite in the Hongyan Town, Inner Mongolia, the fluid characteristics and metallogenic potential of the magma hydrothermal transition phase are discussed. The study shows that the types of granite inclusions in the mountain Shen Fu can be divided into 3 types: melt inclusions, melt fluid inclusions and fluid inclusions. The existence of molten fluid inclusions shows that granite is experienced magma - The homogenization temperature of the fluid inclusions in the central phase and marginal phase of the rock mass varies from 281 to 550, and the salinity varies from 1.1%NaCl EQV to greater than 66.8%NaCl EQV. The minimum emplacement pressure of rock mass is limited by the CO_2 three phase inclusions. It is estimated that the minimum emplacement depth is 7.6~9.5km, the dissolution temperature is 580~700 C, the dissolution depth is concentrated on the Raman characteristics of the 6.0~14.9km. inclusions, and the solid phase composition of the melt fluid inclusions contains barite, blue copper mine and hematite and other strong oxygen. It shows that the magma thermal fluid system has high oxygen fugacity, and it is very beneficial to the enrichment of Cu and other metals in magma under high temperature, high pressure and high salt conditions. In combination with the characteristics of mineralized alteration in the field, the metallogenic potential of the magmatic hydrothermal type Cu deposit is obtained.
【作者單位】： 中國地質(zhì)大學資源學院;中國地質(zhì)大學地質(zhì)過程與礦產(chǎn)資源國家重點實驗室;
【基金】：中國地質(zhì)調(diào)查局地質(zhì)調(diào)查項目(No.NMKD2010-3)
【分類號】：P588.121;P611

【參考文獻】

相關(guān)期刊論文 前10條

1 梅微;呂新彪;唐然坤;王祥東;趙嚴;;大興安嶺南段西坡拜仁達壩-維拉斯托礦床成礦流體特征及其演化[J];地球科學(中國地質(zhì)大學學報);2015年01期

2 熊索菲;何謀`，

本文編號：1967329