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Precipitation of ssalt, Oregon
Salt precipitating as water evaporates on playa. Lake Abert, a pluvial lake in SE Oregon.(140621-61)
Download ImagePluvial lake –Lake Abert, Oregon
A pluvial lake in Oregon’s Basin and Range, Lake Abert periodically dries and floods, leaving behind a playa covered with evaporite minerals. (140621-43)
Download ImagePlaya Lake and fault scarp, Oregon
Lake Abert in SE Oregon borders a normal fault that uplifts Abert Rim. The pluvial lake periodically dries to leave behind salt deposits. (140621-67)
Download ImagePluvial lake –Lake Abert, Oregon
A pluvial lake in Oregon’s Basin and Range, Lake Abert periodically dries and floods, leaving behind a playa covered with evaporite minerals. (140621-37)
Download ImageSalt deposits along edge of playa, OR
Salt deposits along edge of evaporating lake. Lake Abert, Oregon. (140621-55)
Download ImageMudcracks on dry lakebed, Lake Abert, Oregon.
Mudcracks on playa surface. Lake Abert, an ephemeral, pluvial lake in Oregon’s Basin and Range Province. Fault-bounded Abert Rim lies in the background. (140621-30)
Download ImagePluvial lake –Lake Abert, Oregon
A pluvial lake in Oregon’s Basin and Range, Lake Abert periodically dries and floods, leaving behind a playa covered with evaporite minerals. (140621-36)
Download ImagePillow basalt and palagonite, Oregon
Pillow basalt and palagonite–outcrop is about 1.5 meters from bottom to top. The palagonite forms as a weathering product of basaltic glass as it reacts with water–typically while the pillows are forming as the lava pours into a lake. (140621-306)
Download ImageMultnomah Falls and rainbow, Oregon (vertical)
Multnomah Falls and rainbow, Oregon. (140621-315)
Download ImagePillow basalt overlain by land-based flow, Oregon
Pillow basalt and palagonite overlain by lava flow. The palagonite forms as a weathering product of basaltic glass as it reacts with water–typically while the pillows are forming as the lava pours into a lake. The overlying land-based lava flow doesn’t contain pillows because it flowed over the lakebed after it filled . (140621-303)
Download ImageMudcracks on Lake Abert playa, Oregon
Mudcracks on evaporating lake bed –Lake Abert, a playa in southern Oregon. Surface is encrusted with evaporite minerals (140621-28)
Download ImageColumbia River Basalt Group, Oregon. (vertical)
Lava flows of the Columbia River Basalt Group along the White River, Oregon. (140621-275)
Download ImageMudcracks on playa, Oregon (vertical)
Mudcracks on Lake Abert, a playa in southern Oregon. (140621-26)
Download ImageMaupin, Oregon and the Deschutes River.
Maupin, Oregon and the Deschutes River. (140621-236)
Download ImageWhite River Canyon, Oregon
Canyon cut by White River into lava flows Columbia River Basalt Group. White River State Park, Oregon. (140621-271f)
Download ImageColumbia River Basalt Group, Oregon.
Lava flows of the Columbia River Basalt Group along the White River, Oregon. (140621-274)
Download ImageBasalt flows separated by thin paleosol, Oregon (vertical)
Basalt flows separated by thin red paleosol, Oregon. (140621-254)
Download ImageBasalt flows separated by thin paleosol, Oregon
Basalt flows separated by thin red paleosol, Oregon. (140621-254)
Download ImageSlip surface on sand dune, Oregon
Steep slip surface on sand dune. Back side is covered with wind ripples. (140621-152)
Download ImageMudcracks on playa, Oregon (vertical)
Mudcracks on evaporating lake bed –Lake Abert, a playa in southern Oregon. Surface is encrusted with evaporite minerals (140621-21)
Download Image
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