發(fā)布時間：2018-03-26 22:03

  本文選題：銅鎳硫化物礦床　切入點：夏日哈木　出處：《青海大學》2015年碩士論文

【摘要】：夏日哈木礦區(qū)位于東昆侖造山帶西段,柴達木盆地南緣。為了對夏日哈木礦床成巖成礦特點進行研究,本文從礦床的區(qū)域地質(zhì)特征入手分析,在結(jié)合區(qū)域地質(zhì)特征的基礎(chǔ)上,進一步深入介紹和分析礦區(qū)地質(zhì)特征。包括礦區(qū)地層特征、礦區(qū)構(gòu)造特征、地球物理異常以及球化學異常。認為主要礦體M1受基性雜巖體的控制。同時,利用鏡下分析、電子探針等手段,對夏日哈木礦石結(jié)構(gòu)和構(gòu)造、化學組成、礦物成分做了詳細分析。夏日哈木銅鎳礦石主要以斑雜狀、星點狀構(gòu)造為主。黃銅礦、構(gòu)造以星點狀、斑點狀、稀疏浸染狀,塊狀為主。利用夏日哈木基性雜巖體主微量元素以及相關(guān)地球化學數(shù)據(jù),得出夏日哈木賦礦巖漿巖在演化過程中發(fā)生過地殼物質(zhì)混入過程。最后,結(jié)合通過對夏日哈木鎳礦床進行區(qū)域地質(zhì)背景、鎂鐵-超鎂鐵巖體地質(zhì)特征、礦區(qū)及礦床地質(zhì)、成礦時代和動力學背景分析,認為夏日哈木鎳礦形成于早泥盆世,礦床類型屬于巖漿融離-貫入型礦床。
[Abstract]:The summer Hamu ore area is located in the western section of the East Kunlun orogenic belt and the southern margin of the Qaidam basin. In order to study the diagenetic and metallogenic characteristics of the summer Hamu deposit, this paper analyzes the regional geological characteristics of the deposit and combines the regional geological characteristics. The geological characteristics of the ore area are further introduced and analyzed, including the stratigraphic characteristics, tectonic features, geophysical anomalies and spherical chemical anomalies. It is considered that the main ore body M1 is controlled by the basic complex rock mass. At the same time, the analysis is made under the microscope. The structure, structure, chemical composition and mineral composition of summer Hamu ore are analyzed in detail by means of electron probe. Based on the main trace elements and related geochemical data of the summer Hamuji complex, the crustal material mixing process occurred during the evolution of the summer Hamufu magmatic rocks. Based on the analysis of the regional geological background, the geological characteristics of the magnesia-ultramafic body, the ore area and deposit geology, the metallogenic age and the dynamic background, it is considered that the summer Hamu nickel deposit was formed in the early Devonian. The deposit type belongs to magmatic melt-through type deposit.
【學位授予單位】：青海大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P618.41;P618.63

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