The Stratigraphy of the Upper Triassic Martin Bridge Formation and "Lower Sedimentary Series" of the Northern Wallowa Mountains, Oregon |
Contents
STRATIGRAPHY | 11 |
RELATIONS OF THE SEDIMENTARY BEDS OF THE NORTHERN | 68 |
GEOLOGIC HISTORY | 71 |
2 other sections not shown
Common terms and phrases
ammonites andesite Aplite Aplite sill argillaceous argillite argillite beds banded Basalt belt calcareous carbonate material clastic Clover Creek greenstone Columbia River Basalt Cong conglomerates correlated dark gray deformed deposition described dikes disconformity environment eugeosynclinal facies feet fossils collected geologic graded bedding granodiorite graywacke green Halobia hard hornfels Hurricane Canyon Hurricane Divide Hurwal formation Idaho indicate intrusion Jurassic Kinney Creek land area lava light gray limestone lithologic Lostine Canyon Lostine River Lower Sedi Lower Sedimentary series Martin Bridge formation Martin Bridge limestone massive Matterhorn measured thickness mentary series meta-gw metamorphism mudstone northern Wallowa Mountains outcrop overlying Palen pebbles Permian Plate platy Point Joseph probably pyrite Qtzite quartzite reef Rhyolite rocks rubbly S. W. Mueller sandy sediments sequence silty Snake River Canyon source area Strat stratigraphic sections tectonic thin section uplift Upper Triassic volcanic W. D. Smith Wallowa Batholith Wallowa Lake Wallowa region weathers writer