Steep dip

From SEG Wiki
Jump to navigation Jump to search

Strikes and dips of geological features are measured on the field and then used to understand and model the subsurface. Dips are measured relative to a horizontal plane. When a geological feature presents a dip comprised between ~65° and 90° (i.e. vertical), the dip of the feature is considered steep.

A few dips for the most encountered geologic features:

  • Sedimentary layers preserved from erosion, hiatus and tectonic activity (an ideal scenario): dip of 0° i.e. layers are horizontal.
  • Normal faults: ~60°
  • Reverse (thrust) faults: ~30°
  • Salt sediments (diapirism), especially the domes structures can have very steep (>65°), vertical or even camber salt flanks.