Figure 1. Location of Site 1020. JDF = Juan de Fuca Plate, WR = Willamette Block Rotation, GBN = Gorda Basin North, GBS = Gorda Basin South, GFZ = possible Gorda Fracture Zone, BR = Basin and Range rifting, SFZ = San Andreas Fault Zone, CSZ = Cascadia Subduction Zone (from Shipboard Scientific Party, 1997).

Figure 1. Location of Site 1020. JDF = Juan de Fuca Plate, WR = Willamette Block Rotation, GBN = Gorda Basin North, GBS = Gorda Basin South, GFZ = possible Gorda Fracture Zone, BR = Basin and Range rifting, SFZ = San Andreas Fault Zone, CSZ = Cascadia Subduction Zone (from Shipboard Scientific Party, 1997).