Figure 4

Schematic interpretation. Cross-section showing the structure of the Rocky Mountain foreland thrust belt in the region, based on54. Glide planes form in weaker and/or overpressured sedimentary layers28; the inferred glide plane for the SSEs is shown in magenta. HF hydraulic fracturing wells, BF Blueberry Fault, UF unnamed fault; ~ 28 × vertical exaggeration.