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Golden Bear dike swarm

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Journal Article
Published: 01 January 2000
Rocky Mountain Geology (2000) 35 (1): 7-30.
...David M. Cox; Carol D. Frost; Kevin R. Chamberlain Abstract The Kennedy dike swarm of the central and northern Laramie Mountains is the most extensive Precambrian dike swarm of the Wyoming province. The dikes occupy from 15 to 20% of a 100-km-wide exposure of Archean basement, and include diabasic...
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Image
Figure 1. Locations of the <b>Golden</b> <b>Bear</b> and Coso <b>dikes</b>, adjacent to Owens Va...
Published: 01 July 2005
Figure 1. Locations of the Golden Bear and Coso dikes, adjacent to Owens Valley. Main figure shows the Golden Bear and Coso dikes striking into the valley, where they intrude 102 Ma plutons. Both the dikes and the plutons provide distinctive markers that can be matched across the valley
Journal Article
Journal: Economic Geology
Published: 01 December 2016
Economic Geology (2016) 111 (8): 1803-1814.
..., and volcaniclastic units, interpreted as both intracaldera and outflow sheets, and subordinate debris-flow breccias and lacustrine-fluvial sediments. The volcanic rocks were fed and intruded by mafic to felsic, subvolcanic sheet-like intrusions, sills, laccoliths, and dike swarms. These intrusions have compositions...
FIGURES
Journal Article
Published: 11 December 2006
Canadian Journal of Earth Sciences (2006) 43 (10): 1467-1487.
..., three granitic plutons (Turkey Creek, Ferris Mountains, Bear Mountain), and at least three sets of mafic dikes. The Spanish Mine metamorphic suite was deposited, intruded by mafic sills and (or) dikes, and underwent amphibolite-grade metamorphism and folding just prior to, or synkinematic...
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Journal Article
Journal: Economic Geology
Published: 01 August 2019
Economic Geology (2019) 114 (5): 811-856.
... of the siliciclastic rocks and dikes and with decarbonatization and Fe carbonate alteration of the carbonate-bearing units, as well as in Fe-As sulfide and finegrained quartz alteration of all rock types. Oxidation affects 30 to 45% of the deposit, penetrating into the stratigraphy along numerous steeply dipping north...
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Journal Article
Journal: Economic Geology
Published: 01 August 2018
Economic Geology (2018) 113 (5): 1007-1046.
... being recovered as by-products. Hypogene ores in these deposits comprise large, low-grade stockwork and disseminated sulfide zones that are spatially associated with shallowly emplaced (≤1–10 km) plutonic stocks and dike swarms ( Lowell and Guilbert, 1970 ; Gustafson and Hunt, 1975 ; Titley and Beane...
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Journal Article
Journal: GSA Bulletin
Published: 01 July 2005
GSA Bulletin (2005) 117 (7-8): 962-968.
...Figure 1. Locations of the Golden Bear and Coso dikes, adjacent to Owens Valley. Main figure shows the Golden Bear and Coso dikes striking into the valley, where they intrude 102 Ma plutons. Both the dikes and the plutons provide distinctive markers that can be matched across the valley...
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Journal Article
Journal: Economic Geology
Published: 01 March 2011
Economic Geology (2011) 106 (2): 169-192.
.... Molybdenite-bearing calcite veins that crosscut main-stage IOCG mineralization at SWAN have been dated at ~1355 Ma, indicating that this paragenetic stage is unrelated to the Squirrel Hills Granite. U-Pb SHRIMP zircon analyses of volumetrically minor trachyandesitic dikes from Mount Elliott and SWAN reveal...
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Series: GSA Field Guide
Published: 01 January 2004
DOI: 10.1130/0-8137-0005-1.207
EISBN: 9780813756059
... developed in the radial dike swarm at Red Mountain and support a bimodal character to this mid-Tertiary magmatism. Age determination studies of the Urad-Henderson deposits have been ongoing (Schassberger, 1972 ; Naeser et al., 1973 ; Marvin et al., 1974 ; Bookstrom et al., 1987 ; various unpublished...
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Journal Article
Published: 01 January 2009
Rocky Mountain Geology (2009) 44 (1): 17-32.
... , in Olsen , K. H. , ed., Continental rifts: Evolution, Structure, Tectonics : New York , Elsevier , p. 233 – 275 . Crelling , J. C. , 1973 , Petrology of the Bear Creek lamprophyre dike in the Spanish Peaks Igneous Complex, Colorado [Ph.D. dissert.] : State College , Pennsylvania State...
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Journal Article
Journal: Economic Geology
Published: 01 January 2010
Economic Geology (2010) 105 (1): 3-41.
... represent the supply chambers for the magmas and fluids that formed the vertically elongate (>3 km) stocks or dike swarms and associated mineralization. The plutons may erupt volcanic rocks, but generally prior to initiation of the systems. Commonly, several discrete stocks are emplaced in and above...
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Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2434(07)
... restored configuration, and the large difference between the foregoing displacement estimates may merely reflect this. Other markers reinforce and refine the offset estimate based on the Independence dike swarm (Fig. 1) . The Golden Bear dike was described by Moore (1963 , 1981) as a thick K...
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Series: Special Publication
Publisher: Society of Economic Geologists (SEG)
Published: 01 January 2018
DOI: 10.5382/SP.21.10
EISBN: 9781629496405
... of the giant Okavango dike swarm, a prominent Jurassic-aged feature of the Karoo Large Igneous Province ( Fig. 2 ; Schwartz et al., 1995 ; Le Gall et al., 2002 ). An upper limit on the timing of deformation in the Ghanzi-Chobe zone is constrained by a detrital zircon U-Pb age of 579 ± 12 Ma...
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Journal Article
Journal: Geosphere
Published: 01 April 2008
Geosphere (2008) 4 (2): 387-400.
... of the Sierra Nevada batholith. They are the granodiorite of Topaz Lake, the Cathedral Peak Granodiorite, the Mono Creek Granite, the Whitney Granodiorite, the Johnson Granite Porphyry, and the Golden Bear Dike. Megacrysts in these igneous bodies attain 4–10 cm in length. All have sawtooth oscillatory zoning...
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Series: Special Publications of the Society of Economic Geologists
Published: 01 January 2014
DOI: 10.5382/SP.18.07
EISBN: 9781629499291
...-blende-megacrystic mafic dike cut by epidote-calcite veins, midway between Black Mountain and Nugget Hill, Liw-Liw Creek, laser ablation spot 3 (spot location shown in Fig. 11D). The He gas carrying the ablated aerosol was mixed with Ar (~1.2 L/min) immediately after the ablation chamber. For spot...
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Journal Article
Published: 01 July 2012
American Mineralogist (2012) 97 (7): 1013-1042.
...Robert M. Hazen; Joshua Golden; Robert T. Downs; Grethe Hystad; Edward S. Grew; David Azzolini; Dimitri A. Sverjensky Abstract Analyses of the temporal and geographic distribution of earliest recorded appearances of the 88 IMA-approved mercury minerals plus two potentially valid species exemplify...
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Series: Reviews in Economic Geology
Published: 01 January 2018
DOI: 10.5382/rev.20.01
EISBN: 9781629491189
... still relatively small in size, exhibit strong similarities to the Nevada deposits and continue to be explored ( Lane et al., 2015 ; Tucker et al., 2018 ). The second district is in the Golden Triangle in southern China, where numerous deposits containing gold-bearing pyrite occur in Permian...
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Journal Article
Journal: GSA Bulletin
Published: 01 July 2012
GSA Bulletin (2012) 124 (7-8): 1102-1112.
..., and the application of our results to thicker dikes will require further investigation. The Swartruggens kimberlite dike swarm, Helam Mine, South Africa, consists of three dikes, two kimberlites (Main and Changehouse dikes) and a lamprophyre (Muil dike). The dikes were intruded at the end of the Jurassic...
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Journal Article
Journal: Geophysics
Published: 03 November 2005
Geophysics (2005) 70 (6): 33ND-61ND.
...., the Eocene Lethbridge dikes in southern Alberta, Canada). Igneous bodies can also form structural traps for subsequent hydrocarbon generation. For example, brecciated igneous rocks [e.g., Eagle Springs Field, Nevada; Fabero Field, Mexico; Badejo and Linguado Fields, Brazil; Jatibarang Field, Indonesia...
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Journal Article
Journal: Economic Geology
Published: 01 August 2015
Economic Geology (2015) 110 (5): 1313-1337.
... mineralization. Initial uplift of the intrusive mass correlates with the initial voluminous fluid flow event and vein formation at depths of no greater than 3 km. The E-W gold-bearing veins hosted within greenschist-facies country rocks adjacent to the intrusion formed during a second hydrothermal event 5 to 10...
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