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研究报告 [5]
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Geologic map of the Fort Collins 30'×60' quadrangle, Larimer and Jackson Counties, Colorado, and Albany and Laramie Counties, Wyoming [研究报告]
10.3133/sim3399U.S. Geological Survey. 2018-01-01
Workman, Jeremiah B. jworkman@usgs.gov;  Cole, James C. jimcole@usgs.gov;  Shroba, Ralph R. rshroba@usgs.gov;  Kellogg, Karl S. kkellogg@usgs.gov;  Premo, Wayne R. wpremo@usgs.gov
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Geologic map of the San Antonio Mountain area, northern New Mexico and southern Colorado [研究报告]
10.3133/sim3417U.S. Geological Survey. 2018-01-01
Turner, Kenzie J. kturner@usgs.gov;  Thompson, Ren A.;  Cosca, Michael A. mcosca@usgs.gov;  Shroba, Ralph R. rshroba@usgs.gov;  Chan, Christine F. cchan@usgs.gov;  Morgan, Leah E. lemorgan@usgs.gov
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Geologic map of the upper Arkansas River valley region, north-central Colorado [研究报告]
10.3133/sim3382U.S. Geological Survey. 2017-01-01
Kellogg, Karl S.;  Shroba, Ralph R. rshroba@usgs.gov;  Ruleman, Chester A.;  Bohannon, Robert G. rbohannon@usgs.gov;  McIntosh, William C.;  Premo, Wayne R. wpremo@usgs.gov;  Cosca, Michael A. mcosca@usgs.gov;  Moscati, Richard J. rmoscati@usgs.gov;  Brandt, Theodore R. tbrandt@usgs.gov
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Geologic framework, age, and lithologic characteristics of the North Park Formation in North Park, north-central Colorado [研究报告]
10.3133/sir20165126U.S. Geological Survey. 2016-01-01
Shroba, Ralph R. rshroba@usgs.gov
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Mountains, glaciers, and mines—The geological story of the Blue River valley, Colorado, and its surrounding mountains [研究报告]
10.3133/cir1400U.S. Geological Survey. 2016-01-01
Kellogg, Karl S. kkellogg@usgs.gov;  Bryant, Bruce bbryant@usgs.gov;  Shroba, Ralph R. rshroba@usgs.gov
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