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Showing 1 to 9 of 9 for “"Uncompahgre"”.
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Effect of enhanced nutrition during winter on the Uncompahgre Plateau mule deer population
… for the observed declines. In Colorado, the Uncompahgre Plateau mule deer population received the most attention because of a steep population decline from the 1980s through the late 1990s. Biologists hypothesized that poor quality of the pinyon (Pirns edulis) and juniper (Juniperus …
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A sedimentological and structural analysis of the Proterozoic Uncompahgre Group, Needle Mountains, Colorado
Siliciclastic sediments of the Proterozoic Uncompahgre Group can be subdivided into stratigraphic units of quartzite (Q) and pelite (P); these units include a basal, fining- and thinning-upward retrogradational sequence (Q1-P1) that records the transition from an alluvial to a shallow-marine …
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New stratigraphy, polyphase deformational history and basement-involved thrust belt model for the Proterozoic Uncompahgre Group and Vallecito Conglomerate, Needle Mountains, Colorado
… basal Vallecito Conglomerate and the overlying Uncompahgre Group and offers a transgressive depositional model for regional basin evolution. This new stratigraphic connection also helps elucidate deformational geometry. The succession is interpreted to be ~ 1.70 Ga based on new detrital zircon …
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Relations among benthic macroinvertebrates and concentrations and distributions of trace elements using water chemistry, streambed sediment, transplanted bryophytes on the Uncompahgre River, Colorado
Includes bibliographical references (pages 100-111).
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Structural studies in a Proterozoic gneiss complex and adjacent cover rocks, west Needle Mountains, Colorado
… that comprise the basement to the siliciclastic Uncompahgre Group. The mafic and felsic gneisses underwent synkinematic metamorphism and two phases of isoclinal folding and foliation development during D<sub>B</sub>, prior to emplacement of the ca. 1690 Ma plutons. D<sub>BC</sub> deformation …
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Mesoproterozoic tectonic evolution of southwestern North America : protracted intracratonic deformation, sedimentation, and differential exhumation in Grand Canyon and the Rocky Mountain Region
… Sample traverses were made across the Ilse and Uncompahgre fault systems in southern Colorado. 40Ar/39Ar age spectrum analyses of K-feldspars across the N-S trace of the Ilse fault, Colorado, reveal significantly different age data and interpreted cooling histories. The contrasting age spectra …
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Forest structure in unharvested old-growth: understanding the influence of soils on variability of long-term tree dynamics and fire history
… goals for forest restoration projects. The Uncompahgre Plateau (UP) was identified as one of ten initial CFLRP locations nationwide and has very large, old heritage trees scattered across never-harvested areas within the National Forest boundaries. Understanding how soil depth influences …