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2007 Vol.44, Issue 5 Preview Page
31 October 2007. pp. 428-444
Abstract
Far field features of ore deposits include mineralogical, geochemical, or biological attributes that can be recognized beyond the obvious limits of the deposits. They can be primary, if formed in association with mineralization or alteration processes, or secondary, if formed from the interaction of ore deposits with the hydrosphere and biosphere. Primary far-field features include mineral and rock chemistry, isotopic or element halos, fluid pathways and thermal anomalies in host-rock sequences. Secondary far field features include the development of reduced columns by electrochemical processes in transported overburden, geochemical dispersion related to the expulsion of groundwater from tectonic and seismic compression, dispersion of vapor above ore deposits, and geochemical dispersion related to biological processes. Incorporation of methodes for detecting far field features into field based exploration programs may increase the probability of success, especially in covered terrains.
광상의 원격지 특징들에는 광상탐지의 뚜렷한 한계를 극복하여 인지될 수 있는 광물학적, 지구화학적, 생물학적 속성들이 포함된다. 이 특징들은 광화작용 또는 변질작용과 관련되어 생성되었다면 1차기원이며, 광상이 수권 및 생물권과 반응하여 생성되었다면 2차기원이다. 1차기원의 원격지 특징에는 모암중의 광물 및 암석 지구화학, 동위원소 또는 원소 훈륜, 유체통로 및 열적이상등이 포함되고, 2차기원의 원격지 특징에는 이동토에서 전기화학적작용에 의한 환원대의 발달, 지체구조적 압축에 의한 지하수의 배출과 관련된 지구화학적분산, 광상 상부에서 기체분산, 생물학적작용과 관련된 지구화학적분산등이 포함된다. 원격지특성들을 탐지하는 방법이 현장에 근거한 탐사프로그램과 결부될때 특히 잠두광체에서 성공확률이 증가되리라 사료된다.
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Information
  • Publisher :The Korean Society of Mineral and Energy Resources Engineers
  • Publisher(Ko) :한국자원공학회
  • Journal Title :Journal of the Korean Society for Geosystem Engineering
  • Journal Title(Ko) :한국지구시스템공학회지
  • Volume : 44
  • No :5
  • Pages :428-444