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Owl Conglomerate Member

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Journal Article
Journal: GSA Bulletin
Published: 01 April 1990
GSA Bulletin (1990) 102 (4): 459–477.
... and broken by several faults that generally trend northwest-southeast and show right-lateral separation. In this report, the Barstow Formation has been divided into three members. A newly expanded Owl Conglomerate Member is at least 200 m thick. It is exposed on both limbs of the syncline and is composed...
Journal Article
Journal: AAPG Bulletin
Published: 01 March 1957
AAPG Bulletin (1957) 41 (3): 441–465.
.... Deposits of Shinarump-type and Chinle-type are interstratified and intertonguing. The writer proposes that the two types be grouped together in the Chinle formation and that the Shinarump conglomerate be redefined as the Shinarump member of the Chinle formation. The lower unit is correlative with strata...
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Image
—Silurian stratigraphy on St. John and Joshua anticlines, central Gaspé. Type sections included are: Baldwin Volcanic Member (sec. 1), Laforce Formation (sec. 3), Cedar Barn Volcanic Member (sec. 4), Burnt Jam Brook Formation (sec. 5), and Owl Capes Conglomerate Member (sec. 6).
Published: 01 April 1964
Fig. 5. —Silurian stratigraphy on St. John and Joshua anticlines, central Gaspé. Type sections included are: Baldwin Volcanic Member ( sec. 1 ), Laforce Formation ( sec. 3 ), Cedar Barn Volcanic Member ( sec. 4 ), Burnt Jam Brook Formation ( sec. 5 ), and Owl Capes Conglomerate Member ( sec. 6 ).
Image
Stratigraphic section of the Owl Rock Formation measured at Owl Rock (Fig. 2). Base of the section was taken to be the top of a fluvial conglomerate bed overlying orange mudstone, assumed to represent the top of the underlying Painted Desert Member. Tops of interpreted aggradational cycles are seen at 42, 54, 62, 64, 65.5, 67, 85.5, 89, 92.5, and 94 m. In addition, conglomerate beds at 70 m and 79 m contain abundant reworked micritic nodules, presumably formed by downcutting through now-eroded sequence boundaries. Additional sequence tops may be concealed by poor exposure of the section below 50 m.
Published: 01 November 2000
Figure 3 Stratigraphic section of the Owl Rock Formation measured at Owl Rock ( Fig. 2 ). Base of the section was taken to be the top of a fluvial conglomerate bed overlying orange mudstone, assumed to represent the top of the underlying Painted Desert Member. Tops of interpreted aggradational
Journal Article
Journal: AAPG Bulletin
Published: 01 March 1971
AAPG Bulletin (1971) 55 (3): 537.
...Dennis M. Howe Abstract Evidence for the existence of an unconformity in southeastern Wyoming and north-central Colorado between rocks of the Goose Egg Formation, the Owl Canyon Formation, or the Lyons Sandstone and the Casper or Ingleside Formations is provided by reworked basal sandy zones...
Journal Article
Journal: GSA Bulletin
Published: 01 March 2005
GSA Bulletin (2005) 117 (3-4): 276–287.
..., locally overlying the Owl Conglomerate Member (Fig. 2E) . Eleven single-crystal 40 Ar/ 39 Ar analyses on biotites from Rainbow Basin produced a bimodal suite of ages between 14.99 ± 17.4 Ma and 20.41 ± 10.2 Ma, with a mean age of 17.72 ± 2.80 Ma, and modes of 16.56 ± 0.68 Ma and 18.45 ± 0.84 Ma...
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Map showing the near-surface anomaly traces derived from the vertical derivative and high-resolution magnetic map after high-pass filter runs at 2000 m. The anomalies (the dashed lines) are superimposed over the geological map of the area and most are tied to sedimentary rock units. See text for explanation. 1, three anomalies within the Battery Point Formation; 2, anomaly associated with the York River Formation; 3, anomaly at the contact between the Shiphead and Indian Cove formations of the Upper Gaspé Limestones; 4, anomaly at the contact between the Upper Gaspé Limestones and the Chaleurs Group; 5, two anomalies within the Chaleurs Group. The most significant one is 5a, which is correlated to the conglomerate of the Griffon Cove Member and marks the position of the Salinic Unconformity. 6, U-shaped anomaly associated with the Owl Cape Member conglomerate which is the deep marine expression of the Salinic erosion in the shallower part of the depositional basin. 7, various anomalies tied to known diabase dyke outcrops. Abbreviations as in Fig. 5.
Published: 18 May 2004
and the Chaleurs Group; 5, two anomalies within the Chaleurs Group. The most significant one is 5a, which is correlated to the conglomerate of the Griffon Cove Member and marks the position of the Salinic Unconformity. 6, U-shaped anomaly associated with the Owl Cape Member conglomerate which is the deep marine
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Proposed tectonic model of the evolving Middle and Late Triassic Cordilleran magmatic arc and the response of continental backarc sequences observed in the distal basin (Chinle Formation). (A) Migration of the arc onto southwestern North America at ca. 235 Ma results in dynamic subsidence and the trapping of coarse-grained detritus adjacent to the magmatic highlands. This event likely created a flexural “back-bulge” (topographic high); lack of sediment and accompanying drop in base level resulted in an unconformity (Tr-3 unconformity). (B) Slowing subsidence likely contributed to an isostatic adjustment of the arc hinterland and a progradation of coarse-grained material to the distal basin, marked by the sheet sandstone and conglomerate bodies of the basal Shinarump Member. One such tectonic mechanism that could be responsible for the coarse-grained progradations evident in Shinarump and lower Sonsela deposits is decreased dip of the subducting slab (pictured left); however, several other possibilities exist to explain this change (see text). (C) Mudstone-dominated units of the Mesa Redondo and Blue Mesa Members reflect a return to an aggradational regime, likely the result of a phase of increased subsidence and trapping of coarser-grained clastic material near the arc. (D) Following what may have been a depositional hiatus prior to the inception of Sonsela deposition, slowing subsidence results in a coarse-grained progradation evident in the lower Sonsela Member. Basin overfilling and resultant sediment bypass are speculated to be the mechanism responsible for the creation of the persistent red silcrete. (E) Units of the upper Sonsela Member–Owl Rock Members are consistent with persisting high rates of tectonic subsidence and backarc aggradation. Box indicates generalized location of Petrified Forest National Park. All cross sections are oriented perpendicular to structural trends and the basin axis, from southwest to northeast.
Published: 01 July 2013
to an isostatic adjustment of the arc hinterland and a progradation of coarse-grained material to the distal basin, marked by the sheet sandstone and conglomerate bodies of the basal Shinarump Member. One such tectonic mechanism that could be responsible for the coarse-grained progradations evident in Shinarump
Journal Article
Journal: AAPG Bulletin
Published: 01 April 1964
AAPG Bulletin (1964) 48 (4): 437–464.
...Fig. 5. —Silurian stratigraphy on St. John and Joshua anticlines, central Gaspé. Type sections included are: Baldwin Volcanic Member ( sec. 1 ), Laforce Formation ( sec. 3 ), Cedar Barn Volcanic Member ( sec. 4 ), Burnt Jam Brook Formation ( sec. 5 ), and Owl Capes Conglomerate Member ( sec. 6 ). ...
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Journal Article
Journal: PALAIOS
Published: 01 June 2017
PALAIOS (2017) 32 (6): 396–412.
... of study. The formation is divided into three members ( Fig. 2 ; Woodburne et al. 1990 ). The basal Owl Conglomerate Member consists of coarse sandstone and conglomerate; the Middle Member contains sandstone, mudstone, and marl; and the Upper Member is characterized by siltstone and marl ( Dibblee 1968...
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Journal Article
Published: 01 November 2000
Journal of Sedimentary Research (2000) 70 (6): 1280–1289.
...Figure 3 Stratigraphic section of the Owl Rock Formation measured at Owl Rock ( Fig. 2 ). Base of the section was taken to be the top of a fluvial conglomerate bed overlying orange mudstone, assumed to represent the top of the underlying Painted Desert Member. Tops of interpreted aggradational...
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Book Chapter

Published: 01 January 2006
DOI: 10.1130/2006.fld008(13)
EISBN: 9780813756080
... 2. Stop 1—Location map for the Upper Mississippian to Middle Pennsylvanian section at Pottsville, Pennsylvania. Figure 4. Stratigraphic section of part of the upper member of the Mauch Chunk Formation starting at a location ∼146 m north of Owl Creek Road along the Lehigh and New England...
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Journal Article
Journal: AAPG Bulletin
Published: 01 October 1939
AAPG Bulletin (1939) 23 (10): 1439–1492.
... the tectonic development of the mountain systems of the region. Fig. 1. —Panoramic view showing dip slopes along north flank of Owl Creek-Bridger uplift, and north portal of Wind River Canyon. Dip-slope is underlain by stripped resistant limestone member in upper part of Phosphoria formation. Red Canyon...
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Journal Article
Journal: AAPG Bulletin
Published: 01 April 1939
AAPG Bulletin (1939) 23 (4): 476–491.
.... The conformable overlying member consists of 180 feet of slightly micaceous greenish gray laminated glauconitic shales, sandy shales, thin limestones, and a few beds of edgewise or flat pebble intraformational conglomerate. A few intercalations of reddish brown shale and sandy shale are present. Next, a cliff...
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Journal Article
Published: 01 January 2008
Rocky Mountain Geology (2008) 43 (2): 121–141.
..., the Mesa Montosa Member is 20–30 m thick. The Painted Desert Member, about 150 m thick, is predominantly a red-brown bentonitic mudstone, although it includes thin beds of arkosic sandstone ( Dubiel, 1987 , 1989 ) and rip-up clast conglomerate ( Zeigler, 2002 ; Tanner et al., 2003 ). The mudstone...
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Journal Article
Journal: AAPG Bulletin
Published: 01 December 1934
AAPG Bulletin (1934) 18 (12): 1655–1697.
... in that it is not a true conglomerate, but consists of sporadic blocks of Tensleep sandstone in a sandstone bed. At Ervay, about 10 miles northwest of the Casper Creek locality, there is no evidence of such a conglomerate, the basal member of the Phosphoria being a 60-foot bed of limestone. At present the relations...
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Journal Article
Journal: GSA Bulletin
Published: 14 May 2019
GSA Bulletin (2020) 132 (1-2): 113–129.
..., Middle, and Upper members ( Fig. 2 ; Woodburne et al., 1990 ). These deposits fine upwards from the conglomerate and sandstone of the Owl Conglomerate Member to the mudstone-dominated sequences of the Upper Member. Deposition in the Mud Hills occurred between ca. 19 and 13 Ma ( Woodburne et al., 1990...
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Journal Article
Journal: AAPG Bulletin
Published: 01 February 1957
AAPG Bulletin (1957) 41 (2): 212–262.
.... Tertiary deposits are present along the southern margin and at places higher in the mountains. The top of the Middle Cambrian Flathead sandstone makes an upward migration in time toward the northeast of 22 feet per mile. The Upper Cambrian Du Noir member of the Gallatin formation tongues out eastward...
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Journal Article
Published: 01 July 2001
Journal of Paleontology (2001) 75 (4): 890–894.
...KELLY B. MILLER; SARA H. LUBKIN 05 01 2001 The Paleontological Society 2001 The Barstow Formation contains three members ( Fig. 1 ): the Owl Conglomerate Member, and the unnamed middle and upper members. The Owl Conglomerate consists of granite and sandstone conglomerate...
FIGURES
Journal Article
Journal: AAPG Bulletin
Published: 01 November 1963
AAPG Bulletin (1963) 47 (11): 1904–1927.
... with upper members ranging from gray conglomerates to evaporites and carbonates eastward in the Moncton basin, and a black shale and carbonate facies in the Indian Mountain area. Albert lacustrine conditions were succeeded by deformation in local and perhaps also distant areas, resulting in widespread...
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