tehama-colusa melange, cro

 
 

The Tehama-Colusa serpentinite melange underlies the Coast Range ophiolite in northern California. The melange represents a mixture of material derived from the hanging wall of the Franciscan subduction zone (peridotite, arc volcanics and cumulates, chert), blocks from the down-going slab (basalt, chert), and high-grade metamorphic blocks (garnet amphibolite, blueschist).

Serpentinite Melange album