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General Geology of the Southern Olympic Coast Field Trip
Tertiary Stratigraphy of the Central Cascades Mountains
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andesite anticline arkose basalt batholith beds biotite breccia Bull Canyon Cascade Range chert Chiwaukum Chumstick clasts Columbia River conglomerate Cretaceous Cross deposits dikes dipping east Ellensburg Eocene exposed exposures facies fanglomerate field trip folded gabbro Geology Gneiss graben granite gravel graywacke highway Hill hornblende intrusive Junction Lake lava flows limestone Lincoln Creek Formation locally mafic metamorphic miles Miocene Misch Mountain North Cascades Ohanapecosh ophiolite Orcas Island outcrops outwash overlain overlying Park Peak Phyllite Pleistocene plutonic quarry quartz diorite Rainier Ridge road cuts Ronde Basalt San Juan Islands sand sandstone scabland Schist sedimentary rocks sediments shale Shuksan side silt siltstone Skagit Stop stratigraphic structural Swauk Formation syncline Teanaway tectonic terrane Tertiary thick thrust Tieton tuff Turn left Turn right Turtleback Complex U.S. Geol unconformably underlain unit Univ upper valley Vance Vantage Member Vashon Drift volcanic rocks Washington