INTEGRATED GEOLOGICAL-GEOPHYSICAL INTERPRETATIONS

THE ROLE OF AEROMAGNETIC DATA IN EXPLORATION

Aeromagnetic data reflect the varying rock types in the crust. Quantitative interpretations of aeromagnetic data, integrated with the known surface geology, can delineate many structures and plutons that control the location of mineralization. Major, deep-seated structures are often manifested in the magnetic data by alignments of magnetic discontinuities. Plutons, particularly those of Tertiary age, frequently exhibit prominent magnetic anomalies. As a general principal, low-level surveys are more influenced by variations in near-surface rocks, and higher level surveys "look" deeper, i.e. they map changes in rock-types at greater depth.

• Regional Aeromagnetic Surveys - Best for mapping major regional structures, delineating large intrusive complexes and volcanic fields. Suited for identifying areas on a district scale.
• Detailed, Low-level Surveys - Best for mapping shallow subsurface features including faults, intrusives, dikes, skarn zones, and sometimes alteration. When used with other geological, geochemical, and geophysical data, can provide valuable assistance in spotting drill holes. Often useful in delineating pediments and estimating depth of cover.

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  INTERPRETATIONS

  EDCON-PRJ has been providing integrated geological-geophysical interpretations to the exploration industry since 1987. The geophysical analysis is quantitative, provided that profile data are available. Causative sources are delineated, and depths, magnetic susceptibilities, and geometry are estimated. Structural elements, faults, lineaments, and magnetic discontinuities are identified. The geophysical analysis is then integrated with the geologic data base, including radiometric age dates on plutons, volcanic rocks, and mineralization, to put the geophysical interpretation into a geologic context. Finally, the interpretation results are related to known mineral occurrences to identify the geological-geophysical parameters that appear to control the location of the mineral occurrences.

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  SERVICES AND PRODUCTS AVAILABLE

  Proprietary Interpretations - EDCON-PRJ will provide customized interpretations designed to assist in identification of your specific target types

  Standard Interpretations - EDCON-PRJ has many standard, non-exclusive interpretations of both detailed and regional aeromagnetic data sets

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  DELIVERABLES and PRICE

  STANDARD INTERPRETATIONS

  Scale 1:24,000

  Data base: Detailed aeromagnetic surveys

  Deliverables:

  • Quantitative magnetic interpretation overlay showing outlines of causative bodies, magnetic structures, and other interpretive features
  • High-graded interpretation overlay showing significant interpreted features, their geologic interpretation, and relationship to mineral occurrences
  • Report discussing the interpreted features and relationships to mineralization

  Scale 1:100,000

  Data base: Regional aeromagnetic surveys

  Deliverables:

  • Quantitative magnetic interpretation overlay
  • Geologic base map
  • Integrated interpretation overlay with mineral occurrences and target areas
  • Report

  Scale 1:250,000

  Data base: Regional aeromagnetic surveys

  Deliverables:

  • Color-coded magnetic interpretation map with highlighted intrusive and structural features
  • Magnetic interpretation overlay
  • Bouguer gravity map (public domain data)
  • Regional and Residual gravity maps
  • Gravity interpretation overlay
  • Geology map
  • Mineral occurrences overlay
  • Report

  PROPRIETARY INTERPRETATIONS

  PRJ performs interpretations of proprietary data sets or can integrate client's proprietary data, geological or geophysical, into a customized, proprietary interpretation of a non-exclusive data set. Prices will vary depending upon size of proprietary data set or types and amounts of proprietary data integrated with a non-exclusive data set.