Area20
U-20m
Crack
Mylar Composite U-20m
Fault
West Purse Fault
En echelon, no displacement
Lateral motion symbol
2.4 cm
Reactivated fracture
12 cm
2.0 cm
Purse Fault
Paper Map U-20m
West Boxcar Fault
1.1 cm
1.0 cm
0.6 cm
6.8 cm
Pressure Ridge
Handley Fault
4.3 cm
Joint fracture
Boxcar Fault