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Kwagunt Formation

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Journal Article
Published: 01 May 1985
Journal of Paleontology (1985) 59 (3): 741–765.
Journal Article
Published: 01 July 2019
Journal of Paleontology (2019) 93 (4): 612–627.
... combination, previously known only from the Callison Lake Formation, is documented here from the Kwagunt Formation. In addition, Trigonocyrillium horodyskii (Bloeser, 1985) and Bonniea dacruchares Porter, Meisterfeld, and Knoll, 2003, first described from the Kwagunt assemblage, have now been found...
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Journal Article
Journal: GSA Bulletin
Published: 27 December 2017
GSA Bulletin (2018) 130 (7-8): 1085–1098.
... of the Kwagunt Formation yield a weighted mean 206 Pb- 238 U age of 729.0 ± 0.9 Ma (mean square of weighted deviates [MSWD] = 0.86), differing significantly from the previous air-abrasion upper-intercept age of 742 ± 6 Ma on zircons from this same horizon. Organic-rich carbonates from the Carbon Canyon Member...
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Journal Article
Journal: GSA Bulletin
Published: 01 April 1973
GSA Bulletin (1973) 84 (4): 1243–1260.
... to the west. The group is 6,610 ft (2,013 m) thick and has been divided into three formations and seven members. The lower two formations, Galeros (below) and Kwagunt (above) are predominantly argillaceous with subordinate thin limestone beds, while the highest, Sixty Mile Formation, is mostly coarse breccia...
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Photomicrographs of selected VSM species observed in petrographic thin sect...
Published: 01 July 2019
., 2003 . ( 1 ) Carbonaceous test enclosed by fibrous cement in dolostone clasts, Urucum Formation (GP/5T-2536E); ( 2 ) siliceous mold, Kwagunt Formation (AK-1053-13A); ( 3 ) siliceous mold in dolostone, Callison Lake Formation (F930-15-5); ( 4 ) organic test in siliceous ooid, Eleonore Bay Group (GR2880
Image
Photomicrographs of selected VSM species observed in petrographic thin sect...
Published: 01 July 2019
. ( 4 ) Siliceous mold, Kwagunt Formation (AK-1053-13FB); ( 5, 6 ) pyritized tests, Kwagunt Formation (8, AK-1053-13FC/EFS = J21-3; 9, AK-1053-13FB); ( 7–9 ) siliceous molds in dolostone, Callison Lake Formation (J1204-18.2). ( 10–12 ) Bonniea dacruchares Porter et al., 2003 . ( 10 ) Lateral view
Journal Article
Published: 06 March 2017
Geological Magazine (2018) 155 (5): 1175–1189.
... using organic-walled and vase-shaped microfossils present in the upper formation of the Visingsö Group; the upper formation correlates with the Kwagunt Formation of the 780–740 Ma Chuar Group in Arizona, USA, and the lower Mount Harper Group, Yukon, Canada, that is older than 740 Ma. Mineralized scale...
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Journal Article
Journal: AAPG Bulletin
Published: 01 January 1997
AAPG Bulletin (1997) 81 (1): 1–15.
...Thomas L. Uphoff ABSTRACT Source rock potential of the Upper Proterozoic Chuar Group, specifically the Walcott Member of the Kwagunt Formation, provides the basis for a petroleum play in southern Utah. Analyses of Chuar black shales from outcrops in the Grand Canyon show total organic carbon values...
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Journal Article
Published: 01 March 1983
Journal of Paleontology (1983) 57 (2): 321–326.
...Robert J. Horodyski; Bonnie Bloeser Abstract Carbonaceous filaments of possible eukaryotic algal affinity have been detected in ca. 850-m.y.-old mudstones near the top of the Awatubi Member of the Kwagunt Formation, Chuar Group, eastern Grand Canyon, Arizona. These filaments range from 40-130 mu m...
Journal Article
Journal: Geology
Published: 01 February 1980
Geology (1980) 8 (2): 70–71.
...Pier L. Binda; M. Madani Bokhari Abstract Chitinozoanlike microfossils have been discovered in thin sections of an upper Precambrian shallow-water dolostone from the Arabian Shield. The forms are similar to microfossils recently reported from the upper Precambrian Kwagunt Formation of the Grand...
Image
—Thermal modeling results for the Grand Canyon area. (A) Depth vs. time, (B...
Published: 01 March 1999
Figure 6 —Thermal modeling results for the Grand Canyon area. (A) Depth vs. time, (B) temperature vs. time, and (C) % R o vs. time for the Chuar Group (base and top of the Galeros Formation and top of the Kwagunt Formation) and tops of the Coconino Sandstone and Moenkopi Formation.
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Figure 3. Stratigraphic column of the Grand Canyon Supergroup showing geoch...
Published: 01 November 2005
unconformably overlies the Nankoweap Formation and includes two main formations, the Galeros and Kwagunt Formations with seven members and several key marker beds ( Dehler et al., 2001 ). Overlying the Chuar Group is the Sixtymile Formation.
Image
Figure 11. East-west cross sections and measured sections of the Carbon But...
Published: 01 February 2001
Figure 11. East-west cross sections and measured sections of the Carbon Butte Member of the Kwagunt Formation in (A) Lava Chuar Canyon and (B) Kwagunt Canyon. Measured section locations shown in Figure 4 . The Chuar syncline is asymmetric, with an axial plane that dips to the east, toward
Image
Ages of the youngest zircon grains in the Nankoweap <b>Formation</b>, Galeros, and...
Published: 01 May 2017
Figure 5. Ages of the youngest zircon grains in the Nankoweap Formation, Galeros, and Kwagunt Formations plotted as a probability distribution (green curve) and as individual analyses with 2σ uncertainties (red bars). The peak in age probability is at 782 Ma. Blue dashed lines and associated ages
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Figure 6. Orthographic projection, centered on lat 10°N, long 180°E, showin...
Published: 01 February 2001
—Jupiter Member, site 2; CC—Carbon Canyon Member; G—mean, Galleros Formation; CB—Carbon Butte Member, Kwagunt Formation. Sixty Mile Formation: SM l, u—lower, upper.
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Species of vase-shaped microfossils (VSMs) and their occurrence in 14 strat...
Published: 01 July 2019
‘ Cycliocyrillium simplex assemblage’ of Riedman et al. ( 2017 ). References per unit: Kwagunt Formation, USA (Porter et al., 2003 ; Morais et al., 2017 ); Callison Lake Formation, Canada (Strauss et al., 2014 ; Cohen et al., 2017 ; Morais et al., 2017 ; Riedman et al., 2017 ); Visingsö Group, Sweden (Knoll
Journal Article
Journal: Geology
Published: 01 July 2000
Geology (2000) 28 (7): 619–622.
..., relatively invariant values in the upper Galeros, and a marked (13‰) excursion in the Kwagunt Formation. C isotope values from interbedded carbonates (δ 13 C carb ) are more scattered, especially in the Kwagunt Formation, where thin, organic-rich carbonates are intercalated among carbonaceous shales. Least...
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PALEOMAGNETIC DIRECTIONS AND POLES FROM THE <b>KWAGUNT</b> AND GALEROS <b>FORMATIONS</b>
Published: 17 June 2019
TABLE 1. PALEOMAGNETIC DIRECTIONS AND POLES FROM THE KWAGUNT AND GALEROS FORMATIONS
Journal Article
Journal: GSA Bulletin
Published: 01 February 2001
GSA Bulletin (2001) 113 (2): 163–181.
...Figure 11. East-west cross sections and measured sections of the Carbon Butte Member of the Kwagunt Formation in (A) Lava Chuar Canyon and (B) Kwagunt Canyon. Measured section locations shown in Figure 4 . The Chuar syncline is asymmetric, with an axial plane that dips to the east, toward...
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Journal Article
Journal: GSA Bulletin
Published: 17 June 2019
GSA Bulletin (2020) 132 (3-4): 710–738.
...TABLE 1. PALEOMAGNETIC DIRECTIONS AND POLES FROM THE KWAGUNT AND GALEROS FORMATIONS ...
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