Tip to prevent a fault from intersecting the boundary

PhamVietThai

I have four seams (Veins) modeled from 2D cross-sections, as shown in the attached image. In my geological model, I’ve introduced two faults: F.A and F.KT4. However, these faults do not intersect all coal seams. Specifically:

• Fault F.A only cuts the upper seam (Vein 1),
• Fault F.KT4 cuts the three lower seams (Veins 2, 3, and 4).

When using the Fault System feature in Leapfrog Geo, the software forces each fault to cut through all seams, which makes the geological model difficult to control and less geologically realistic.

I would like to ask if anyone has tips or workarounds to handle this scenario — for example:

• Creating a “fake” lithology to limit the fault range,
• Using Distance Functions with a very small offset (e.g., 0.001 mm),
• .TEC

I’d really appreciate any suggestions or best practices from your experience, and would love to discuss this further with anyone who has encountered a similar case.

Thanks ALL