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Dilco Coal Member

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Journal Article
Journal: AAPG Bulletin
Published: 01 May 1973
AAPG Bulletin (1973) 57 (5): 959.
... to the north where it merges with the coastal-barrier sequence north of Sanostee. The name Torrivio Sandstone Member of the Gallup is proposed for this unit. On the east, along the outcrop belt, it pinches out into nonmarine paludal mudstones of the Dilco Coal Member of the Crevasse Canyon Formation. The basal...
... and part of the Dilco coal member of the Mesaverde of the southern San Juan Basin region; and the nonmarine strata between the Hosta and the Dilco in the southern area grade northward into marine shale of the upper part of the Mancos. Lateral tracing of the formations southward from southern San Juan...
Series: AAPG Memoir
Published: 01 January 1995
DOI: 10.1306/M64594C12
EISBN: 9781629810850
... represent the seaward half of landward-stepping genetic sequences. Contemporaneous Tocito estuarine, Torrivio Sandstone coarse-grained fluvial, and Dilco Coal Member carbonaceous coastal-plain deposits are deposited landward. Such small-scale genetic sequences differ from progradational sequences...
Journal Article
Journal: AAPG Bulletin
Published: 01 May 1980
AAPG Bulletin (1980) 64 (5): 689.
... into coastal barriers where coals accumulated in back-barrier subfacies. This formation grades upward into the Dilco Coal Member of the Crevasse Canyon Formation characterized by varve-like fine-grained sediments, thin sandstones, and coals, which pass upward into thick, northwesterly transported fluvial...
Image
Diagrammatic section showing stratigraphic relations of Mesaverde group and...
Published: 01 September 1956
sandstone with La Ventana tongue (Klv); Kma and Kmc—Allison member and Cleary coal member of Menefee formation; Kph—Hosta tongue of Point Lookout sandstone; Kgi, Kb, Kds, and Kdc—Gibson coal member, Bartlett barren member, Dalton sandstone member, and Dilco coal member of the Crevasse Canyon formation; Km
Journal Article
Journal: AAPG Bulletin
Published: 01 February 1957
AAPG Bulletin (1957) 41 (2): 181–196.
... Point Lookout sandstone, the Dilco-lower Gibson zone would become Crevasse Canyon formation with the Dilco coal member at the base and the Gibson coal member at the top, and the Gallup member would become the Gallup sandstone. As will be shown, however, the correlation of the “upper Hosta-Point Lookout...
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Journal Article
Journal: AAPG Bulletin
Published: 01 September 1956
AAPG Bulletin (1956) 40 (9): 2149–2162.
... sandstone with La Ventana tongue (Klv); Kma and Kmc—Allison member and Cleary coal member of Menefee formation; Kph—Hosta tongue of Point Lookout sandstone; Kgi, Kb, Kds, and Kdc—Gibson coal member, Bartlett barren member, Dalton sandstone member, and Dilco coal member of the Crevasse Canyon formation; Km...
FIGURES
Journal Article
Journal: AAPG Bulletin
Published: 01 March 1964
AAPG Bulletin (1964) 48 (3): 292–316.
... the Gibson Coal member has a wide range of grain sizes ( Pl. 3, F ) although there is a surprising uniformity of the maximum grain size at about 2.0 ϕ ( Fig. 9 ). Dilco Coal Member .—The basal unit of the Mulatto-Dalton cycle is the continental Dilco Coal Member of the Crevasse Canyon formation...
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Image
—Light gray-weathering marine Mulatto Shale overlying carbonaceous shale an...
Published: 01 March 1964
Fig. 10. —Light gray-weathering marine Mulatto Shale overlying carbonaceous shale and coal of Dilco Member. West of Pinedale, McKinley County.
Journal Article
Journal: AAPG Bulletin
Published: 01 May 1973
AAPG Bulletin (1973) 57 (5): 955.
...E. C. Beaumont Coal is present in some degree through nearly the entire range of Cretaceous strata in the San Juan basin. Economically significant deposits in the southern part of the basin are present in the Gallup Sandstone, the Dilco and Gibson Coal Members of the Crevasse Canyon Formation...
Journal Article
Journal: AAPG Bulletin
Published: 01 March 1981
AAPG Bulletin (1981) 65 (3): 554–555.
... the Dakota Sandstone to the Dilco Member of the Crevasse Canyon Formation and consists largely of shales and sandstones. The included Tres Hermanos Sandstone has been raised to formational status by Hook and Cobban and includes the lowermost Atarque Member, overlain by the Carthage Member and the Fite Ranch...
Journal Article
Journal: AAPG Bulletin
Published: 01 March 1981
AAPG Bulletin (1981) 65 (3): 554.
... to the Dilco Member of the Crevasse Canyon Formation and consists largely of shales and sandstones. The included Tres Hermanos Sandstone Member of the Mancos Shale includes sandstones, shales, and two coal beds. The lowermost sandstone unit is a moderately sorted, calcareous sandstone which coarsens upward...
Series: SEPM Gulf Coast Section Publications
Published: 01 December 1989
DOI: 10.5724/gcs.89.07.0175
EISBN: 978-1-944966-06-5
... wedge of marginal marine sandstones (Gallup, Tocito and Borrego Pass sandstones) and continental shales, coals and sandstones (non-marine Gallup “Sandstone,” Dilco Coal Member of the Crevasse Canyon Formation). This wedge is encased in the open marine Lower Mancos Shale and Mulatto Tongue of the Upper...
Journal Article
Journal: AAPG Bulletin
Published: 01 October 1969
AAPG Bulletin (1969) 53 (10): 2114–2140.
... a widespread regression. The Dilco unit crops out just south of the study area. There it consists of dark, carbonaceous, silty and sandy mudstone, discontinuous coal beds, and lenticular bodies of medium- to coarse-grained sandstone. Although recognized as the probable equivalent of the Dilco Member...
FIGURES | View All (16)
Journal Article
Published: 17 June 2019
Journal of Sedimentary Research (2019) 89 (6): 552–575.
...), previously interpreted as entirely shallow-marine deposits, interfingers with the Lower Mancos Shale ( Campbell 1971 , 1973 , 1979 ; Molenaar 1973 , 1974 ; McCubbin 1982 ; Nummedal and Molenaar 1995 ) ( Fig. 1 ). The overlying nonmarine Dilco Coal Member of the Crevasse Canyon Formation...
FIGURES | View All (21)
Journal Article
Journal: AAPG Bulletin
Published: 01 October 1953
AAPG Bulletin (1953) 37 (10): 2407–2421.
... Hosta ss. member) Mancos fm. (Satan tongue) Mesaverde fm. (lower Hosta ss. member) Mesaverde fm. (lower Gibson coal member) Mesaverde fm. (upper Dalton ss. member) Mancos fm. (Mulatto tongue) Mesaverde fm. (lower Dalton ss. member) Mesaverde fm. (Dilco coal member) Mesaverde fm. (Gallup ss...
FIGURES
Journal Article
Journal: AAPG Bulletin
Published: 01 February 1956
AAPG Bulletin (1956) 40 (2): 255–294.
.... Coal is much more abundant in the Dakota in the southwestern part of the area, where the upper sandstone member is absent in most localities. The upper sandstone member differs to some extent from the lower. Its color and general composition are approximately the same; however, the upper member...
FIGURES | View All (5)
Journal Article
Journal: GSA Bulletin
Published: 08 June 2020
GSA Bulletin (2021) 133 (1-2): 243–252.
..., USA indicates an ever-wet environment such that the high temperature correlates to excess humidity ( Akyuz et al., 2016 ). Examination of floodplain successions in the Dilco member of the Gallup system also shows abundant coals and poorly developed paleosols, which again suggests ever-wet conditions...
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Journal Article
Journal: AAPG Bulletin
Published: 01 November 1965
AAPG Bulletin (1965) 49 (11): 2076–2119.
... Energy Commission at 55,000,000 tons or 63 per cent of the U.S. total. The largest coal reserves are in the Fruitland and Menefee Formations of the uppermost Cretaceous in the northern part of the basin ( Fig. 3 ). In the southern part of the basin, the Dilco, Gibson, and Fruitland Formations contain...
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Journal Article
Published: 28 October 2020
Journal of Sedimentary Research (2020) 90 (9): 1094–1113.
...) evaluated the relationships between the marine Mancos Shale, the marine sandstones of the Gallup Formation, the landward nonmarine deposits of the Dilco Member, and the fluvial sandstones of the overlying Torrivio Member in a sequence stratigraphic context ( Fig. 2 ), and the work demonstrates a dynamic...
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