物探与化探
物探與化探
물탐여화탐
GEOPHYSICAL AND GEOCHEMICAL EXPLORATION
2014年
2期
227-233
,共7页
陆顺富%曾键年%李锦伟%智超%余冯力
陸順富%曾鍵年%李錦偉%智超%餘馮力
륙순부%증건년%리금위%지초%여풍력
水系沉积物%地球化学%找矿远景区%铜陵-池州地区%多金属矿
水繫沉積物%地毬化學%找礦遠景區%銅陵-池州地區%多金屬礦
수계침적물%지구화학%조광원경구%동릉-지주지구%다금속광
stream sediment survey%geochemistry%ore prospective area%Tongling-Chizhou area%polymetallic deposit
在长江中下游铁、铜、金多金属成矿带1∶20万水系沉积物测量的基础上,对铜陵-池州地区的地球化学异常特征进行初步总结。通过对区内元素进行因子分析,得出多种与成矿有关的异常组合,利用成矿元素异常组合划分地球化学分区,进而圈定地球化学异常。通过对比成矿地质背景和地球化学条件,对铜陵地区典型矿床进行相似度分析,预测池州地区的找矿远景区。结果表明:综合区域上的地层、构造、岩浆岩和区域矿产等资料,对成矿元素异常组合进行地球化学分区是可行的,能有效反映致矿异常,突出矿化信息;根据样点相似度值的计算结果与典型矿床相似度图的耦合情况分析,池州市南部的梅街镇、青阳县东侧、铜山铜矿外围是区域上最为有利的铜多金属找矿远景区。
在長江中下遊鐵、銅、金多金屬成礦帶1∶20萬水繫沉積物測量的基礎上,對銅陵-池州地區的地毬化學異常特徵進行初步總結。通過對區內元素進行因子分析,得齣多種與成礦有關的異常組閤,利用成礦元素異常組閤劃分地毬化學分區,進而圈定地毬化學異常。通過對比成礦地質揹景和地毬化學條件,對銅陵地區典型礦床進行相似度分析,預測池州地區的找礦遠景區。結果錶明:綜閤區域上的地層、構造、巖漿巖和區域礦產等資料,對成礦元素異常組閤進行地毬化學分區是可行的,能有效反映緻礦異常,突齣礦化信息;根據樣點相似度值的計算結果與典型礦床相似度圖的耦閤情況分析,池州市南部的梅街鎮、青暘縣東側、銅山銅礦外圍是區域上最為有利的銅多金屬找礦遠景區。
재장강중하유철、동、금다금속성광대1∶20만수계침적물측량적기출상,대동릉-지주지구적지구화학이상특정진행초보총결。통과대구내원소진행인자분석,득출다충여성광유관적이상조합,이용성광원소이상조합화분지구화학분구,진이권정지구화학이상。통과대비성광지질배경화지구화학조건,대동릉지구전형광상진행상사도분석,예측지주지구적조광원경구。결과표명:종합구역상적지층、구조、암장암화구역광산등자료,대성광원소이상조합진행지구화학분구시가행적,능유효반영치광이상,돌출광화신식;근거양점상사도치적계산결과여전형광상상사도도적우합정황분석,지주시남부적매가진、청양현동측、동산동광외위시구역상최위유리적동다금속조광원경구。
Based on the 1 ∶ 200,000 stream sediment survey along the Yangtze River Fe, Cu, Au polymetallic ore-forming belt, the authors made a preliminary study of the geochemical anomaly characteristics in Tongling-Chizhou area. Factor analysis was employed for the elements, and the ore-forming elements assembly was determined. The ore-forming elements anomalies assembly was used to make geochemical division and, as a result, geochemical anomalies were delineated. Based on a comparative study of geological backgrounds and geochemical conditions, the authors conducted similarity analysis of the typical deposits in Tongling area and forecast Chizhou pros-pecting area. In consideration of the strata, structure, intrusive rocks and mineral resources in this area, the authors hold that it is fea-sible to use the ore-forming elements anomalies for geochemical division, which can effectively reflect anomalies caused by mineraliza-tion and highlight the mineralization information. Based on an analysis of the coupling between the similarity value calculations of the samples and the similarity graph of the typical deposit, the authors hold that Meijie Town in southern Chizhou City, the east side of Qingyang County, and the periphery of the Tongshan copper mine are most favorable areas in search for Cu polymetallic deposits.