I have borehole data (x, y, z values for each subsurface measurement, and its associated lithology). I would like to interpolate the borehole data to create 1) interpolated subsurfaces and 2) lithological profiles at specific cross-sections. I only have access to the ArcGiS package w/ extensions, but no other software packages, nor the budget to access them.

I need to know if the above is possible with the tools and data that I have, and if so, what tools and methodology I should be looking into.

  • See Creating Faulted Geologic Surfaces with ArcGIS. I think it assumes the faults are vertical, as well as the boreholes. Are your depths True Vertical Depth Subsea (TVDSS)? – Kirk Kuykendall Jul 28 '16 at 18:45
  • Thanks, I just saw this now and will look into it. I actually have no idea how the depths were measured. A lot of this data is old, and there is little indication of how they measured it, which I understand could be a big problem when it comes to accuracy. – Ana Aug 12 '16 at 16:37
  • If the data is lithology logs, treating lithologic breaks as surfaces/layer boundaries can be very unreliable. – GeoMatt22 Sep 11 '16 at 1:42

I would have suggested using the Spatial Analyst extension to get at the same, but since you mentioned that you have access to only the above resources, I suggest using the Raster Interpolation Toolset, which comes with the 3D analyst extension. There are different approaches, depending on the result you seek. I suggest checking the Kriging or the Natural Neighbour option as they seem to be very effective at interpolation for what you are asking.

  • Sorry, I do have spatial analyst, all the extensions. I meant I only have ArcGIS, nothing more. – Ana Jul 28 '16 at 16:07
  • If you have the Geostatistical Analyst extension available, I think this can achieve what you are needing. – a1234 Jul 28 '16 at 16:19
  • I have this. Can you clarify for which step I would need this? Interpolation of points? – Ana Jul 28 '16 at 16:30
  • Search for the Raster Interpolation Toolset within ArcGIS. That will work with the extension you presently have. – Vijay Ramesh Jul 28 '16 at 17:13

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