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Mt. Baker stratovolcano, Washington

Mt. Baker, a glacier-covered stratovolcano of the Cascades Range in northern Washington (220830-3)

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Mt. Baker stratovolcano, Washington

Silhouette of Mt. Baker, a glacier-covered stratovolcano in northern Washington (220828-61)

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Lower Curtis Glacier and Crevasses, Washington

Terminus of Lower Curtis Glacier on the side of Mt. Shuksan, North Cascades National Park, Washington (220828-57)

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Lower Curtis Glacier and cirque, Washington

Lower Curtis Glacier and cirque carved into the side of Mt. Shuksan, North Cascades National Park, Washington (220828-56)

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Haystack rock glacial erratic, Washington

Haystack rock, a giant erratic deposited by the Continental Ice Sheet in northern Washington (161015-29)

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Cretaceous Migmatite, Washington

Migmatite gneiss of the Cretaceous Chelan Mountains Terrane, Washington (161014-83)

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Columbia River near Chelan, Washington

Columbia River near Chelan, Washington (161014-81)

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Palouse Falls and CRBG, Washington (vertical)

Palouse Falls and cliffs of Columbia River Basalt Group (Wanapum overlying Grande Ronde), Washington (161012-74)(Wanapum overlying Grande Ronde), Washington (161012-76)

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Palouse Falls and CRBG, Washington

Palouse Falls and cliffs of Columbia River Basalt Group (Wanapum overlying Grande Ronde), Washington (161012-74)

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Missoula Floods slackwater deposits- “Touchet Beds”

Sediment deposited from slackwater in temporary lakes formed behind hydraulic dams during the Ice-Age Missoula Floods (160816-34)

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Sheath fold in gneiss, Washington

Sheath fold in gneiss of the footwall of the Kettle dome, northern Washington (160815-28)

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Mylonitic front of Okanogan Dome, Washington

Mylonitic front of Okanogan Dome, a metamorphic core complex in northern Washington (160815-1)

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Eocene Sycamore leaf, Washington (square)

Eocene fossilized Sycamore leaf (Macginitiea gracilis) from Klondike Mountain Formation, Republic, Washington. Collection of Stonerose Interpretive Center (150803-58)

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Overlapping dacite domes, Black Butte, CA

Black Butte Holocene-age dacite domes, on the west side of Mt. Shasta in the Cascade Range, California (221215-2)

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Volcanic rock of Pinnacles NP, California

Cliffs of Oligocene felsic volcanic rocks of Pinnacles National Park, a piercing point on the San Andreas Fault, California (221214-22)

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Volcanic rock of Pinnacles NP, California (vertical)

Cliffs of Oligocene felsic volcanic rocks of Pinnacles National Park, a piercing point on the San Andreas Fault, California (221214-21)

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Oil pump jack, central California

Oil pump jack, central California (221214-15)

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Desert Wash, Mojave Desert, SE California

Lone hiker in Virgin Spring Canyon, Death Valley National Park, California (221211-6)

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Quaternary lakebeds and Cambrian section, SE Cal

Quaternary Tecopa Lakebed deposits and Paleozoic (Cambrian) sedimentary rock (mostly limestone) of the Resting Spring Range, Shoshone, California (221210-28)

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