Filled with mystery conjured by unparalleled biodiversity, the Klamath Mountains tell numerous stories of evolution and resilience shaped over long periods of time. Geology is the defining character ...

Mesozoic, eugeosynclinal, metasedimentary, and metavolcanic strata are intruded by elongate and arcuate northeast-trending alpine ultramafic belts in the Klamath Mountains of southwestern Oregon. The ...

When Interstate 5 was built in the 1960s, it sliced through southwest Oregon’s Klamath Mountains, exposing their metamorphic innards. To Michael Cope, the brawny founder of American Mineral Research, ...

New evidence, based on mineral dating, suggests that rocks of the Blue Mountains, the oldest geological formation in Oregon, may have been derived from the Klamath and Sierra Nevada mountain chains.

The Journal of Geology, Vol. 99, No. 5 (Sep., 1991), pp. 711-728 (18 pages) An extensive fault-bounded amphibolite terrane of Late Jurassic ($145 \pm 2 Ma$) metamorphic age occurring in the ...

New evidence, based on mineral dating, suggests that rocks of the Blue Mountains, the oldest geological formation in Oregon, may have been derived from the Klamath and Sierra Nevada mountain chains, ...