Little Cottonwood intrusive complex

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Journal Article
Published: 01 April 1988
Bulletin of the Seismological Society of America (1988) 78 (2): 838–854.
... is an Eocene age channel feature located 2 km east of the Cottonwood Grove fault. In addition, the Paleozoic-Cretaceous boundary is interpreted to be an erosional surface with no intrusives included in the Paleozoic rocks. Synthetic seismogram modeling, detailed gravity survey data, and theoretical gravity...
Series: Society of Economic Geologists Guidebook Series, Society of Economic Geologists Guidebook Series
Published: 01 January 1998
DOI: 10.5382/GB.29
EISBN: 9781934969823
..., a continuum of mid-Tertiary paleodepths is exposed that ranges from about 11 km on the west side of the Little Cottonwood stock to the actual paleosurface on the east side of the range (Fig. 1; John, 1989a). Consequently, we will see a wide variety of textures and styles of emplacement in the intrusive rocks...
Journal Article
Published: 01 January 2001
Rocky Mountain Geology (2001) 36 (2): 119–162.
... equigranular, and an eastern type (including the Keetley volcanic rocks), which is fine grained and porphyritic. The compositional variation in the western stocks (Little Cottonwood, Alta, and Clayton Peak stocks) forms three distinct compositional groups. The compositional variation in the eastern stocks...
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Journal Article
Journal: Geosphere
Published: 01 August 2013
Geosphere (2013) 9 (4): 864–950.
... ) that was determined to be active from 39 to 32 Ma based chiefly on 40 Ar/ 39 Ar age determinations. This belt is not deemed a part of the Indian Peak–Caliente field. Between this magmatic belt and the Indian Peak–Caliente caldera complex are three centers of magmatic activity, including 28–17 Ma granitic intrusions...
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Journal Article
Journal: Geosphere
Published: 01 February 2016
Geosphere (2016) 12 (1): 58–113.
... ; Rytuba et al., 2010 ) and Cottonwood Creek caldera ( Harvey et al., 1986 ; Bussey, 1996 ) ( Fig. 4 ) have shown a strong correlation between the location of postcaldera ring-fracture rhyolitic intrusions with mineralization by gold, silver, uranium, lithium, gallium, and mercury. For a more extensive...
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Journal Article
Journal: Geosphere
Published: 01 December 2015
Geosphere (2015) 11 (6): 1770–1789.
... Society of America 2015 The complex history of Late Cretaceous plate convergence and arc magmatism in the U.S. Cordillera may be deciphered from the eroded remnants of Cordilleran arcs exposed at the surface today, as well as from basins that received sediment eroded from magmatic arcs...
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Journal Article
Journal: Geosphere
Published: 01 February 2008
Geosphere (2008) 4 (1): 1–35.
... Cottonwood Canyon erupted sequentially but all indistinguishably at 40.0 Ma. Numerous small to moderate-sized intrusions, including a northeast-striking dike swarm, were emplaced between ca. 39.8 and 39.6 Ma, and the final igneous activity consisted of more dacite lavas and domes erupted at 39.5 Ma...
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Journal Article
Published: 01 January 2009
Rocky Mountain Geology (2009) 44 (2): 103–119.
... time, the net erosional effect was to exhume midcrustal rocks prior to burial by the Big Cottonwood complex after 770 Ma. Details of this exhumation are unknown, but long-term tectonic stability and associated gradual denudation of the orogen is plausible. During that time, Rodinia was assembled...
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Journal Article
Journal: AAPG Bulletin
Published: 01 August 1956
AAPG Bulletin (1956) 40 (8): 1863–1898.
... is underlain by beds of the Willwood formation from South Fork Valley as far south as Little Grass Creek ( Fig. 2 ). In the Little Grass Creek and Cottonwood Creek areas fissile shale of the Tatman formation underlies the Pitchfork formation. West to the axis of the Owl Creek Range, Masursky (1952) has...
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Journal Article
Journal: GSA Bulletin
Published: 01 September 2010
GSA Bulletin (2010) 122 (9-10): 1686–1699.
..., 1997 ; Ehlers and Chan, 1999 ; this paper). The Big Cottonwood Formation is unconformably bracketed by the underlying Paleoproterozoic(?) Little Willow Complex and the overlying Neoproterozoic (Sturtian glacial) Mineral Fork Formation ( Fig. 2A ; Crittenden, 1976 ; Christie-Blick and Link, 1988...
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Journal Article
Journal: Geosphere
Published: 01 February 2013
Geosphere (2013) 9 (1): 126–137.
... of Death Valley. In addition to the Paleozoic clast assemblage, the clasts include a distinct leucomonzogabbro that is petrologically and geochronologically indistinguishable from the southeastern margin of the Early Jurassic Hunter Mountain batholith in the Cottonwood Mountains ( Fig. 1 ; Niemi et al...
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