Magnetic & Gravity Gate

Philosophy behind the recommended and adopted GeoRock work flow for Potential Field Magnetic & gravity.

Main targets are :

Regional tectonic events that affected the concession area.

Construct a basement tectonic map for the concession area including basement depth and major structural trends.

Define the density heterogenities within the sedimentary section along with creating gravity layers.


General Approach

Often calls for the remedial involvement of potential field methods - gravity and magnetic methods in particular and their involvement in the interpretation process to not only assures a greater uniformity of interpretation coverage, but it is also important in locating features that are seismically less easy to recognize such as strike-slip faults, regional discontinuities, dykes, and true basement surface.

There are 2 aspects to gravity and magnetic interpretation - qualitative and quantitative. The qualitative element is largely map-based and dominates the early and late stages of a study. The preliminary structural element map that results from this can be regarded as the cornerstone of the interpretation. Qualitative interpretation involves recognition of:

  1. The nature of discrete anomalous bodies including intrusions, faults and lenticular intra-sedimentary bodies - often aided by the running of simple test models;
  2. Disruptive cross-cutting features such as strike-slip faults;
  3. Effects of mutual interference between anomalies that are vertically or horizontally adjacent;
  4. Age relationships of intersecting faults;
  5. Structural styles;
  6. Unifying tectonic features/events that integrate seemingly unrelated interpreted features; and
  7. Delineate depth to different wavelength anomalies.

More >>>