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Now showing items 32524-32543 of 37568
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(1973-05-08)The bedrock of Thetis, Kuper, and seven adjacent islands and islets of British Columbia's Gulf Islands consists of four Late Cretaceous (Campanian) formations of the Nanaimo Group. The four, from oldest to youngest, a ...
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(1973-12-13)Four distinct lithologic units compose the Tertiary rocks of the Neahkahnie Mountain - Angora Peak area, located along the northwest Oregon coast near the town of Nehalem. The Tertiary units are the late Oligocene to ea ...
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(1974-10-9)Six Tertiary units are exposed in the Onion Peak area near the town of Cannon Beach., Oregon. The units consist of: late Eocene to early Miocene Oswald West mudstones (informal), middle Miocene Astoria Formation (Angora ...
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(1972-05-24)The late Oligocene Yaquina Formation is exposed in an arcuate outcrop pattern which extends along the central Oregon Coast from Siletz Bay on the north to Seal Rock on the south. Maximum inland extent of the Yaquina out ...
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Stratigraphy and sedimentology of the Cretaceous Nanaimo group, Saltspring Island, British Columbia (1975-12-10)Clastic sedimentary rocks of the Nanaimo Group on Saltspring Island, British Columbia are Late Cretaceous in age, overlie a deformed and intruded Paleozoic basement complex, and consist of eight formations. These eight ...
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(2003-09-19)Geologic mapping of the Longview-Kelso area and the measurement and description of a composite 650-meter thick stratigraphic section of the Cowlitz Formation (Tc) in Coal Creek using bio-, magneto-, litho-, and sequence ...
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(1965-05-14)Over 3,000 feet of nonmarine Late Cretaceous sedimentary rocks are exposed within the northern Fish Lake Plateau. The Cretaceous strata are overlain by over 2,000 feet of Early Tertiary nonmarine sedimentary rocks and v ...
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(1967-05-29)Approximately 4,210 feet of Late Cretaceous and 1,440 feet of Tertiary sedimentary rocks are exposed in the Salt Wells Anticline area of southcentral Sweetwater County, Wyoming. Late Cretaceous units include the Blair, R ...
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(1976-12-17)Silurian and Devonian rocks are exposed for approximately 8 square kilometers inthe KootenayArc structural province of northeastem Washington. These Middle Paleozoic rocks overlie the Upper Cambrian Metaline Limestone an ...
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(1986-04-28)The Upper Cretaceous to Eocene Montgomery Creek Formation is exposed between the Klamath and Cascade Mountains in the vicinity of Big Bend and Montgomery Creek, northern California. The formation is divided into a no ...
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(1984-05-04)Two ash-flow tuff units of the late Miocene-early Pliocene Deschute Formation in central Oregon were studied in detail because of the widespread distribution, diverse compositions, and stratigraphic importance. The Lowe ...
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(1994-07-05)Transitional areas between upland and aquatic habitats, commonly known as wetland, were once viewed as unproductive areas and were drained for farming or pasture. Wetlands are now accepted as significant ecological res ...
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(1986-06-11)The Mitchell inlier in north-central Oregon contains the largest exposure of Cretaceous marine sedimentary rocks in this region. Nearly 9,000 ft of Albian-Cenamanian rocks are exposed along the flanks of the Mitchell ant ...
Now showing items 32524-32543 of 37568
