Late Cretaceous Tectonics and Paleogeography (85 Ma).
Late Cretaceous (85 Ma)
Plate reorganization as Kula separated from Farallon Plate; dextral transpression with North America; Kula-Farallon ridge moved northward along coast
Baja BC transported northward with obliquely converging Kula plate
Major magmatic activity in two belts (110-85 Ma) followed by strong decline and null in magmatic activity (80-40 Ma)
Andean-style segmentation of Farallon arc from Central America to Southern California
Sevier thrusting continued and foreland basin shifted locus of subsidence southward in response to shallow Laramide subduction (shallow angle)
Late Cretaceous Tectonic Map and Paleogeographic Map