Recognition and significance of boundary transforms and rift edges within island arc terranes of the western Sierra Nevada

Fragmentation of island arcs and related dispersion of the resulting arc \nsegments is common in modern continental margin environments. Inasmuch as a \nmajority of Cordilleran accreted terranes show island arc affinities one would \nexpect to find remnants of arc-related transforms and rifts within such \nterranes. Jurassic arc and ophiolitic terranes of the western Sierra Nevada \nand Klamath Mountains have regional age and structural patterns which suggest \nmultiple rifting and transform faulting episodes, and some areas offer \nremnants of the actual rift or transform complexes.