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Duffy Mountain Sandstone

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Image
—Air photo of <b>Duffy</b> <b>Mountain</b> <b>sandstone</b> looking to northwest. This <b>sandstone</b>...
Published: 01 May 1982
FIG. 6 —Air photo of Duffy Mountain sandstone looking to northwest. This sandstone forms prominent cliff and is exposed for over 2 mi (3.2 km). Cross-bedded sandstone lithofacies pinches out to northwest.
Image
—Proposed migration pattern for <b>Duffy</b> <b>Mountain</b> <b>sandstone</b>. Combined effect o...
Published: 01 May 1982
FIG. 16 —Proposed migration pattern for Duffy Mountain sandstone. Combined effect of storm and fair-weather sediment transport produces shelf-bar migration to southwest.
Image
—Subsurface cross section A-A′ through main axis of <b>Duffy</b> <b>Mountain</b> <b>sandston</b>...
Published: 01 May 1982
FIG. 11 —Subsurface cross section A-A′ through main axis of Duffy Mountain sandstone which has been subdivided into two sandstone bodies (A and B). See Figure 9 for location of section. Section is hung on log marker within upper Mancos. Correlations indicate sandstone climbs stratigraphically
Series: SEPM Special Publication, SEPM Special Publication
Published: 01 January 1984
DOI: 10.2110/csp.99.07.0185
EISBN: 9781565761643
... of the Belle Fourche Shale, the Shannon and Sussex Sandstone Members of the Cody Shale, and the Duffy Mountain sandstone and the Tocito Sandstone Lentil of the Mancos Shale. These deposits resemble the storm-built and tide-built sand ridges reported from the modem Atlantic Continental Shelf or from...
Journal Article
Journal: AAPG Bulletin
Published: 01 May 1982
AAPG Bulletin (1982) 66 (5): 491–508.
...FIG. 6 —Air photo of Duffy Mountain sandstone looking to northwest. This sandstone forms prominent cliff and is exposed for over 2 mi (3.2 km). Cross-bedded sandstone lithofacies pinches out to northwest. ...
FIGURES | View All (17)
Image
—Topographic map of <b>Duffy</b> <b>Mountain</b> area showing outcrop of <b>Duffy</b> <b>Mountain</b> s...
Published: 01 May 1982
FIG. 5 —Topographic map of Duffy Mountain area showing outcrop of Duffy Mountain sandstone (shaded) and locations of measured sections 1 to 6. For location of map area, see Figure 3 .
Image
—Net sand maps based on electric log interpretation. <b>Duffy</b> <b>Mountain</b> sandsto...
Published: 01 May 1982
FIG. 12 —Net sand maps based on electric log interpretation. Duffy Mountain sandstone outcrop is A sandstone in Figure 11 .
Image
—Schematic paleogeographic cross section showing the depositional position ...
Published: 01 May 1982
FIG. 7 —Schematic paleogeographic cross section showing the depositional position of Duffy Mountain sandstone based on both outcrop and subsurface control.
Image
Summary sedimentology of depositional <b>sandstone</b> facies sampled in the Castl...
Published: 11 December 2020
Table 1.— Summary sedimentology of depositional sandstone facies sampled in the Castlegate Sandstone, Blackhawk Formation, Star Point Sandstone, Prairie Canyon Member, Morapos Sandstone, Devil's Grave Sandstone, Berry Gulch Sandstone, Deception Creek Sandstone, Duffy Mountain Sandstone, Wise
Image
—Geologic map of northwestern Colorado showing proximity of subsurface well...
Published: 01 May 1982
FIG. 3 —Geologic map of northwestern Colorado showing proximity of subsurface well control to outcrops of shelf sandstones in upper Mancos Shale (geology from Tweto, 1979 ). See Figure 5 for detailed map of Duffy Mountain sandstone outcrop and Figure 11 for subsurface cross section A-A′.
Image
—Paleoshoreline map (modified from  Gill and Cobban, 1973 ). During  Baculi...
Published: 01 May 1982
FIG. 17 —Paleoshoreline map (modified from Gill and Cobban, 1973 ). During Baculites asperiformis ammonite zone, area in southwestern Wyoming, near town of Rawlins, was undergoing eastward progradation. Later, during the deposition of Duffy Mountain sandstone, Baculites perplexus ammonite
Image
Paleogeographic maps for maximum regression in two selected stratal interva...
Published: 11 December 2020
surfaces FS200 and FS100), and B) below FS600, representing the lower Castlegate Sandstone, upper part of Desert Member, Blackhawk Formation, Deception Creek Sandstone, Duffy Mountain Sandstone, Wise Gulch sandstone, and Hunt Creek Sandstone (between major flooding surfaces FS600 and FS500) (after
Image
—A. Schematic sketch of major bounding surfaces within cross-bedded sandsto...
Published: 01 May 1982
FIG. 8 —A. Schematic sketch of major bounding surfaces within cross-bedded sandstone lithofacies of Duffy Mountain sandstone showing locations of field sketches and measured sections. See Figure 5 for location of outcrop. B and C. Sketches of bounding surfaces between cross-bed sets within
Image
Stratigraphic panels showing the location of petrographic samples in the co...
Published: 11 December 2020
(SC), Aberdeen (A), Kenilworth (K), Sunnyside (S), Grassy (G), and Desert (D) shallow-marine members of the Blackhawk Formation, the Castlegate Sandstone (C), the Morapos Sandstone (M), the Devil's Grave Sandstone (DG), the Berry Gulch Sandstone (BG), the Deception Creek Sandstone (DC), the Duffy
Series: SEPM Special Publication, SEPM Special Publication
Published: 01 January 2008
DOI: 10.2110/pec.08.90.0355
EISBN: 9781565763180
...) FS500-FS600 (2 ammonite biozones) 830 × 10’ 30 × 10 9 / 4% (Rim Rock, Castlegate Sandstones) 81 × 10 9 / 10% (Castlegate Sandstone) 83 × 10 9 / 10% (Deception Creek, Duffy Mountain, Wise Gulch, Hunt Creek Sandstones) 630 × 10 9 / 76% FS250-FS600 3400 × 10 9 30 × 10 9 / 1% 120...
FIGURES | View All (19)
Journal Article
Published: 11 December 2020
Journal of Sedimentary Research (2020) 90 (10): 1389–1409.
...Table 1.— Summary sedimentology of depositional sandstone facies sampled in the Castlegate Sandstone, Blackhawk Formation, Star Point Sandstone, Prairie Canyon Member, Morapos Sandstone, Devil's Grave Sandstone, Berry Gulch Sandstone, Deception Creek Sandstone, Duffy Mountain Sandstone, Wise...
FIGURES | View All (15)
Journal Article
Journal: Geosphere
Published: 01 June 2008
Geosphere (2008) 4 (3): 612–639.
... of spring deposits are observed throughout the southern Great Basin ( Quade et al., 1995 ; Jeff Knott, 2003, personal commun.) and have caused interpretive problems in the past. The depositional facies in the Lake Tecopa beds include a variety of mudstone, siltstone, sandstone, conglomerate, tuff...
FIGURES | View All (13)
Journal Article
Journal: Geology
Published: 01 February 2013
Geology (2013) 41 (2): 179–182.
...N. Nguyen; B. Duffy; J. Shulmeister; M. Quigley Abstract Palynology of exhumed Pliocene marine turbidites and marl beds on the island of Timor provide insights into crustal deformation in the Indonesian region. Between ca. 4.5 and ca. 3 Ma, palynomorphs were sourced primarily from Australia and New...
FIGURES | View All (4)
Journal Article
Published: 10 March 2021
Journal of the Geological Society (2021) 178 (4): jgs2020-085.
...–thrust belts, as emphasized by recent reinterpretations in the Alps and Provence ( Graham et al. 2012 ; Decarlis et al. 2014 ; Granado et al. 2019 ; Espurt et al. 2019 b ; Célini et al. 2020 ), the Atlas Mountains ( Saura et al. 2014 ; Moragas et al. 2016 ; Teixell et al. 2017...
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Journal Article
Published: 30 April 2018
Quarterly Journal of Engineering Geology and Hydrogeology (2018) 51 (3): 387–398.
... be used for hazard and risk assessment in the region. Rockfalls are a common phenomenon in mountainous regions and constitute a significant geological hazard to both life and property. Rockfall is distinct from other types of mass movements because of its type, size, volume and failure mechanism ( Levy...
FIGURES | View All (11)