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Elves Chasm Pluton

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Journal Article
Journal: GSA Bulletin
Published: 01 September 1996
GSA Bulletin (1996) 108 (9): 1167-1181.
..., unlike the juvenile crust that characterizes the Yavapai province, rocks in the western Upper Gorge preserve evidence for pre-1.8 Ga crust. First, the 1840 ± 1 Ma Elves Chasm pluton, the oldest known rock from the southwestern United States, has a Pb isotopic signature similar to that of rocks...
Journal Article
Journal: GSA Bulletin
Published: 01 September 2015
GSA Bulletin (2015) 127 (9-10): 1391-1410.
..., that are uniform across the transect. Another new finding is that the 1.84 Ga Elves Chasm pluton, on which the Vishnu Schist was deposited, yields juvenile ɛ Hf(t) values of +5 to +12 and was not the dominant source for the ca. 1.85 Ga peak in the 1.75 Ga Vishnu Schist. Instead, the Vishnu Schist was derived from...
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Journal Article
Journal: Geology
Published: 01 November 2001
Geology (2001) 29 (11): 1015-1018.
... continental or oceanic arcs, there has been little evidence for pre–1800 Ma crust south of the Wyoming craton other than the 1840 ± 1 Ma Elves Chasm pluton in the Upper Granite Gorge of the Grand Canyon, Arizona. We report SHRIMP U-Pb ages of inherited zircons from metarhyolites and plutons in central...
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Journal Article
Journal: Geology
Published: 01 February 2007
Geology (2007) 35 (2): 167-170.
... of ca. 1850 Ma Trans-Hudson–Penokean age, during extension and partial melting associated with the development of transpressional crustal-scale shear zones. The occurrence of the 1840 ± 1 Ma Elves Chasm pluton in the Grand Canyon demonstrates that rocks of Trans-Hudson–Penokean age are present...
FIGURES
Journal Article
Journal: Geology
Published: 01 December 2010
Geology (2010) 38 (12): 1099-1102.
... of the Elves Chasm Gneiss, the oldest plutons from the Grand Canyon are 1.74 Ga, but 1.75 Ga plutons are found in central Arizona to the south and the Mojave province to the west ( Whitmeyer and Karlstrom, 2007 ). 848 grains from the full data set are 3.8–1.8 Ga, indicating that a predominance (81...
FIGURES
Journal Article
Journal: Geosphere
Published: 01 August 2007
Geosphere (2007) 3 (4): 220-259.
..., as documented by the 1.84 Ga Elves Chasm gneiss in the Grand Canyon ( Hawkins et al., 1996 ); (2) in situ 2.0–2.4 Ga crustal blocks (one of the options in Wooden and Miller, 1990 ); (3) possible Archean crustal blocks in the subsurface (see following); and/or (4) Archean detrital grains deposited...
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Image
Paired U-Pb-Hf results for zircons separated from <b>plutons</b> west of the Cryst...
Published: 01 September 2015
Figure 9. Paired U-Pb-Hf results for zircons separated from plutons west of the Crystal shear zone. (A) Composite diagram of all paired igneous U-Pb-Hf data west of Crystal shear zone. Elves Chasm Gneiss is shown in light gray. Average 2σ uncertainty of all epsilon Hf values is shown in top right
Journal Article
Published: 01 January 2012
Rocky Mountain Geology (2012) 47 (1): 1-35.
... constrained by the youngest age populations are 1763 Ma, 1717 Ma, and 1701 Ma for the respective localities from north to south. All of the metasedimentary successions were deformed and metamorphosed after deposition, and quartzite at one locality is intruded by ca. 1672-Ma plutons. On the basis...
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Journal Article
Journal: Geology
Published: 01 January 2007
Geology (2007) 35 (1): e144.
...-Hudson–Penokean crust is present. And, in the Grand Canyon, the Elves Chasm pluton has been dated at 1840 Ma, a solid Trans-Hudson age ( Hawkins et al., 1996 ). Karlstrom et al. also challenge, as overly simplistic, our observation that much of the Paleoproterozoic crust of the Southwest is strongly...
Image
Plate-tectonic cartoons illustrating possible scenarios for the depositiona...
Published: 01 September 2015
of the Vishnu Schist during final convergence between the newly formed Yavapai arc and Mojave Province. Vishnu Schist is deposited across both provinces (and at least in part on the Elves Chasm Gneiss) from 1750 to 1740 Ma in a trench-fill sequence receiving most of its sediment from the Mojave Province, plus
Journal Article
Journal: Geology
Published: 01 July 2008
Geology (2008) 36 (7): 555-558.
..., 2007 , and references therein) are suggestive of an extensional mechanism, and the occurrence of the 1.84 Ga Elves Chasm pluton ( Hawkins et al., 1996 ) in the Upper Granite Gorge of the Grand Canyon in Arizona testifies to the occurrence of Trans-Hudson–Penokean age rocks well to the south of central...
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Journal Article
Journal: Geosphere
Published: 01 April 2011
Geosphere (2011) 7 (2): 513-527.
... , there are contrasting placements for this boundary. Karlstrom et al. (2002) greatly expand the area in the eastern Great Basin and Colorado Plateau underlain by Mojavia compared to the placement of Bennett and DePaolo (1987) . This expansion may be justified as the Elves Chasm and Tuna Creek plutons of the Grand...
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Journal Article
Journal: Geology
Published: 01 October 2002
Geology (2002) 30 (10): 943-946.
... to the Archean core of Laurentia soon after it was derived from the mantle. Pre–1.8 Ga crust is present locally in the primarily 1.8–1.65 Ga juvenile orogen (e.g., 1.84 Ga Elves Chasm pluton, Grand Canyon; Hawkins et al., 1996 ), possibly in the central Colorado subsurface, as indicated by inherited zircons...
FIGURES
Journal Article
Journal: GSA Bulletin
Published: 01 January 2007
GSA Bulletin (2007) 119 (1-2): 202-220.
... metamorphism, rather than a contact aureole near the older Elves Chasm pluton ( Williams and Jercinovic, 2002 ). Garnet in Bt + Ms schists near the Bass shear zone (RM 108) and Bt + Ms + Ky/Sil schists (RM 112) that host the pegmatite complex contain inclusion trail relationships similar to those observed...
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Journal Article
Journal: Geology
Published: 01 February 2007
Geology (2007) 35 (2): 191.
... in the southwestern United States, the 1.84 Ga Elves Chasm Gneiss ( Hawkins et al., 1996 ). The Bickford and Hill rifting model explicitly states that arc accretion probably did play a role in Paleoproterozoic crustal evolution of southern Laurentia. The principal unanswered question centers on the relative...
Journal Article
Journal: Geology
Published: 01 January 2007
Geology (2007) 35 (1): e143-e144.
... ( Hamilton, 1979 ). Similarly, in the Proterozoic of the southwestern United States, Nd, Pb, and Hf isotopic data indicate localized older (pre-1.8 Ga) crust. The best-characterized older crust is an isolated exposure of 1.84 Ga Elves Chasm granodiorite, on which part of the 1.75–1.72 Ga arc was built...
Journal Article
Journal: Lithosphere
Published: 01 February 2012
Lithosphere (2012) 4 (1): 77-88.
... Province of southwestern Laurentia, with the 1726–1709 Ma peaks representing abundant ca. 1760–1700 Ma igneous rocks exposed in Arizona ( Karlstrom and Bowring, 1993 ). With the exception of the ca. 1840 Ma Elves Chasm Gneiss ( Hawkins et al., 1996 ), plutons older than 1760 Ma are generally not found...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 2001
GSA Bulletin (2001) 113 (5): 575-590.
... a U-Pb zircon date of ca. 1780 Ma ( Coleman et al., 1999 ); although the 1840 ± 1 Ma Elves Chasm Gneiss of the Upper Granite Gorge in the Grand Canyon has Pb isotopic ratios characteristic of the Mojave province ( Hawkins et al., 1996 ). A metamorphosed and altered metavolcanic rock yielded SHRIMP...
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Journal Article
Journal: GSA Bulletin
Published: 01 October 2003
GSA Bulletin (2003) 115 (10): 1191-1217.
... in contributing to basin fill. This isotopic signature could be produced from Laurentian sources if a mixture of Yavapai-Mazatzal province and/or Trans-Hudson orogen and/or Midcontinent plutonic rocks as well as minor Archean rocks was in the source area. However, single-grain U-Pb zircon ages do not support...
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