Hi Wang--

This process has occurred along the Pacific-North America plate boundary in western North America progressively over the past ~30 Myr. The inactive paleo-trench can still be seen offshore. See the attached map where I highlight the paleo-trench offshore California and Baja California (yellow arrows). You can also see in the seafloor bathymetry how the former accretionary wedge has been highly dismembered via transtension and transpression at the latitude of southern California and northern Baja California.

A few papers come to mind that have documented this process. I paste those citations below.

Cheers,

Scott Bennett

U.S. Geological Survey

Atwater, T. and Stock, J., 1998, Pacific-North America Plate Tectonics of the Neogene Southwestern United States: An Update; International Geology Review; Vol. 40, Iss. 5.

F. Michaud, J.Y. Royer, J. Bourgois, J. Dyment, T. Calmus, W. Bandy, M. Sosson, C. Mortera-Gutiérrez, B. Sichler, M. Rebolledo-Viera, and B. Pontoise, 2006, Oceanic-ridge subduction vs. slab break off: Plate tectonic evolution along the Baja California Sur continental margin since 15 Ma, Geology, v. 34, p. 13-16, doi:10.1130/g22050.1

Nicholson, C., et al., 1994, Microplate capture, rotation of the western Transverse Ranges, and initiation of the San Andreas transform as a low-angle fault system." Geology 22: 491-495.

Thanks to Scott Edmund Kelsey Bennett!

Thanks for attaching these papers