DMU Headnote
DMU Headnote
[Feather River Terrane is interpreted as a disrupted, polygenetic Paleozoic ophiolite, part of an oceanic plate, preserved in a subduction zone assemblage. Cross cutting dikes show that at least part of the Feather River Belt ultramafic suite is older than Middle Devonian (-388 Ma). Amphibolite facies metamorphism of part of this unit occurred during the middle to late Paleozoic (236 to 345 Ma). Unit also named Feather River peridotite belt.]