本文選題：溫杖子金礦床 + 地質(zhì)特征�。� 參考：《吉林大學(xué)》2015年碩士論文

【摘要】：本文以產(chǎn)于華北陸塊北緣并疊加了中生代構(gòu)造－巖漿帶的遼西溫杖子金礦床為主要研究對象，研究總結(jié)構(gòu)造破碎帶內(nèi)的脈狀金礦床地質(zhì)特征，分析歸納了其成礦要素和成礦系統(tǒng)，為該區(qū)及其相似地區(qū)開展找礦預(yù)測提供了借鑒。 通過系統(tǒng)總結(jié)研究礦床地質(zhì)特征并結(jié)合區(qū)域成礦地質(zhì)背景，進(jìn)一步明確了溫杖子金礦床產(chǎn)出地質(zhì)環(huán)境和礦床屬性。溫杖子金礦床處于前中生代華北陸塊東段中生代建昌盆地南緣，總體上為受近東西向壓扭性斷裂破碎帶控制的脈狀蝕變巖型金礦床。礦床產(chǎn)出圍巖為中生代安山質(zhì)火山－沉積巖含金建造和花崗閃長巖侵入巖含金建造。 系統(tǒng)研究總結(jié)了溫杖子金礦床地質(zhì)特征。礦體總體表現(xiàn)為沿近東西向斷裂破碎帶產(chǎn)出，沿走向、傾向延伸大，但礦化極不均勻，單個礦體規(guī)模不大，，尖滅再現(xiàn)明顯。在水平方向上，礦化強(qiáng)度由東向西增強(qiáng)，礦化元素也由金銀為主變?yōu)榻疸y銅鉛鋅共存；在垂直方向上，勘查結(jié)果和以往開采區(qū)位置顯示出有2個礦化富集帶，上部以往開采區(qū)圍繞800ｍ標(biāo)高上下、550～700ｍ標(biāo)高為2個礦化富集地段。礦石質(zhì)量較好，為易選礦石。 總結(jié)歸納出溫杖子金礦床成礦要素。溫杖子礦床礦化的主控因素為中生代含金建造、燕山早期巖漿巖系統(tǒng)和韌－脆性斷裂系統(tǒng)。野外觀察獲得的地質(zhì)資料及與成礦相關(guān)的測年結(jié)果都表明礦化主要形成在燕山期。 在上述研究基礎(chǔ)上，提出了溫杖子金礦床成礦系統(tǒng)。筆者認(rèn)為溫杖子金礦床的成礦系統(tǒng)模型為“中生代巖漿巖含金建造－熱流體交代成礦物質(zhì)聚集－構(gòu)造定位定型”。按照這種成礦系統(tǒng)認(rèn)識，區(qū)內(nèi)韌－脆性斷裂發(fā)育地段應(yīng)當(dāng)是繼續(xù)找礦的重要區(qū)域，礦化類型應(yīng)當(dāng)以蝕變巖型為主。
[Abstract]:Taking the Wenzangzi gold deposit, which occurred in the northern margin of the North China continental block and superimposed the Mesozoic tectonic-magmatic belt, as the main object of study, the geological characteristics of the vein gold deposit in the tectonic fracture zone are studied and summarized in this paper. The ore-forming elements and ore-forming system are analyzed and summarized, which provides a reference for ore prospecting and prediction in this area and its similar areas. By systematically summarizing the geological characteristics of the deposit and combining with the regional metallogenic geological background, the occurrence geological environment and the deposit attributes of the Wenzangzi gold deposit are further clarified. The Wenzhang gold deposit is located in the southern margin of the Mesozoic Jianchang basin in the eastern segment of the North China block in the pre-Mesozoic, and is generally a vein altered rock type gold deposit controlled by the near east-west compression-torsional fracture zone. The host rock of the deposit is the gold bearing formation of Mesozoic Anshan volcanic sedimentary rock and granodiorite intrusive rock. The geological characteristics of Wenzhang gold deposit are systematically studied and summarized. The ore body generally appears to be produced along the nearly east-west fracture zone and tends to extend large along the strike, but the mineralization is extremely uneven, the scale of single ore body is not large, and the reappearance of pinnacle is obvious. In the horizontal direction, the mineralization intensity increases from east to west, and the mineralization elements change from gold, silver to gold, copper, lead and zinc, and in the vertical direction, the exploration results and the location of the previous mining areas show that there are two mineralized enrichment zones. In the upper mining area, there are two mineralized enrichment areas around the 800 m elevation and the upper and lower elevation of 550 ~ 700 m. Ore quality is good for easy ore separation. The ore-forming elements of Wenzhang gold deposit are summarized. The main controlling factors of mineralization in Wenzangzi deposit are the Mesozoic gold-bearing formation, the early Yanshanian magmatic system and the ductile-brittle fracture system. The geological data obtained from field observation and the results of metallogenic dating indicate that mineralization mainly occurred in Yanshanian period. Based on the above research, the ore-forming system of Wenzangzi gold deposit is put forward. The authors consider that the metallogenic system model of the Wenzangzi gold deposit is "metallogenic formation of Mesozoic magmatic rocks, accumulation of metasomatic ore-forming materials in thermal fluid and structural localization." According to this metallogenic system, the ductile-brittle fault development area in this area should be an important area to continue prospecting, and the main mineralization type should be altered rock type.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.51

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