Within 40 square miles of the southeastern Wallowa
Mountains, Oregon, eugeosynclinal Permian and Triassic
formations comprising a section about 25,000 feet thick
have been exposed by uplift and erosion of overlying
Miocene Columbia River basalt. Deposition appears to have
been continuous from Permian into Upper Triassic, but an
apparent angular...
Within 40 square miles of the southeastern Wallowa
Mountains, Oregon, eugeosynclinal Permian and Triassic
formations comprising a section about 25,000 feet thick
have been exposed by uplift and erosion of overlying
Miocene Columbia River basalt. Deposition appears to have
been continuous from Permian into Upper Triassic, but an
apparent angular...
Within 40 square miles of the southeastern Wallowa Mountains, Oregon, eugeosynclinal Permian and Triassic formations comprising a section about 25,000 feet thick have been exposed by uplift and erosion of overlying Miocene Columbia River basalt. Deposition appears to have been continuous from Permian into Upper Triassic, but an apparent angular...