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Farallon Negro Volcanics

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Simplified geologic map of <b>Farallón</b> <b>Negro</b> <b>Volcanic</b> Complex (FNVC), Argentin...
in > Geology
Published: 01 July 2017
Figure 1. Simplified geologic map of Farallón Negro Volcanic Complex (FNVC), Argentina, modified after Llambías (1972) . Geochronological constraints are from Sasso and Clark (1998) and Halter et al. (2004) . Sample locations given by stars (blue, Bajo de la Alumbrera porphyries; green
Journal Article
Journal: Economic Geology
Published: 01 January 2006
Economic Geology (2006) 101 (1): 71-94.
... included both effusive eruptions, forming several areally restricted lavas, and explosive eruptions, producing more widely dispersed (up to 5 km) tuff units, some up to 30-m thickness in proximal sections. Four key features of the volcanic stratigraphy suggest that the Farallon Negro volcanics need...
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Journal Article
Journal: Geology
Published: 01 July 2017
Geology (2017) 45 (7): 623-626.
...Figure 1. Simplified geologic map of Farallón Negro Volcanic Complex (FNVC), Argentina, modified after Llambías (1972) . Geochronological constraints are from Sasso and Clark (1998) and Halter et al. (2004) . Sample locations given by stars (blue, Bajo de la Alumbrera porphyries; green...
FIGURES
Series: Geological Society, London, Special Publications
Published: 01 January 2005
DOI: 10.1144/GSL.SP.2005.248.01.13
EISBN: 9781862394964
... of the evolution of the calcalkaline Farallón Negro Volcanic Complex hosting the Bajo de la Alumbrera porphyry Cu-Au deposit (Argentina), and supplementary fluid-chemical data from Bingham (Utah) and other examples, permit a quantitative re-assessment of the fundamental processes controlling the key economic...
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Journal Article
Published: 25 June 2018
Geological Magazine (2019) 156 (7): 1285-1294.
... Formation are, in turn, broadly correlated with the magmatic record of the same age in the Coihaique Alto region, in the Chilean Patagonian Andes (the Casa de Piedra Volcanic Complex, the El Toro Formation and the Morro Negro basalts, although the latter are slightly younger; Demant, Suárez & De La Cruz...
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Zircon trace element compositions fingerprinting magma reservoirs, <b>Farallón</b>...
in > Geology
Published: 01 July 2017
Figure 3. Zircon trace element compositions fingerprinting magma reservoirs, Farallón Negro Volcanic Complex, Argentina. A: Th/U of dated zircons plotted against their corresponding 206 Pb/ 238 U date. B: Zircon geochemical compositions obtained by laser ablation–inductively coupled plasma–mass
Journal Article
Journal: Economic Geology
Published: 01 October 1973
Economic Geology (1973) 68 (6): 799-815.
... most, mineralized part of a porphyry system is believed to be exposed at Los Loros, Chile. There a zone of molybdenum-rich and copper-poor potassium silicate alteration carrying abundant K-feldspar occupies an area in the interior of a relatively large pluton of phaneritic granite.At Farallon Negro...
Journal Article
Journal: Geosphere
Published: 01 February 2011
Geosphere (2011) 7 (1): 219-239.
... Triassic evolution of the Precordillera involves a north-northwest–trending weakness zone affected by north-northeast–directed extension, generating an area with transtensional deformation during the Choiyoi volcanism development. Later, during the Triassic generation of the Cuyana rift basin...
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Journal Article
Journal: Economic Geology
Published: 01 June 2015
Economic Geology (2015) 110 (4): 889-923.
... arc, in particular the Farallón Negro, Pocho, and San Luis magmatic centers ( Kay and Mpodozis, 2002 ). Fig. 1 A) Geologic map of the Abanico intra-arc basin showing the location and ages of the Miocene-Pliocene porphyry copper deposits of Chile and Argentina ( Mpodozis and Cornejo, 2012...
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Journal Article
Published: 15 June 2015
The Canadian Mineralogist (2014) 52 (6): 969-980.
... and exploration and, at present, is an Emeritus advisor at AIST, Japan. The Capillitas mine is an epithermal precious- and base-metal vein deposit, genetically linked to the other mineralizations of the Farallón Negro Volcanic Complex. It is located along the eastern slope of the Capillitas Range...
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Journal Article
Journal: Economic Geology
Published: 01 November 2010
Economic Geology (2010) 105 (7): 1191-1241.
...Anthony A. Longo; John H. Dilles; Anita L. Grunder; Robert Duncan Abstract Clusters of high-sulfidation epithermal deposits containing more than 50 Moz of gold are hosted by advanced argillic-altered Miocene volcanic rocks in the Yanacocha district, northern Peru (lat. 6°59′30″ S, long. 78°30′45″ W...
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Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2407(05)
... deformation took place in the late Miocene, with a west-east orientation of the main stress, and was followed by Pliocene extension. The changing stress patterns correlate with differences in convergence vectors between the Aluk, Farallon, and Nazca oceanic plates and the Gondwana or South American...
Journal Article
Journal: Geosphere
Published: 01 June 2008
Geosphere (2008) 4 (3): 496-519.
...- and trace-element data and U-Pb zircon ages show that the East Sulphur Spring volcanic suite is Eo-Oligocene in age (36–31 Ma) and ranges in composition from high MgO-basaltic andesite to peraluminous rhyolite. The major- and trace-element compositions of the volcanic rocks are characteristic of continental...
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Journal Article
Journal: Geosphere
Published: 01 December 2006
Geosphere (2006) 2 (7): 333-351.
...) attributed a fast anomaly below the Colorado Plateau to the foundering Farallon slab and a slow anomaly just to the east of the plateau as upwelling asthenosphere associated with volatiles released from the slab. We collected more than 500 xenoliths from 11 of the roughly 50 volcanic necks in the Rio...
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Series: AAPG Memoir
Published: 01 January 2015
DOI: 10.1306/13531931M108846
EISBN: 9781629812724
... Abstract Isotopic ages in volcanic arc igneous and subduction complex rocks in Venezuela and on the offshore island of Aruba are consistent with the finding that the ages of arc igneous activity and high pressure–low temperature metamorphism in both of those areas are restricted to times...
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Journal Article
Published: 01 September 2008
Bulletin de la Société Géologique de France (2008) 179 (5): 465-481.
... in northwestern Mexico and southwestern United States during successive migrations of the volcanic arc [ Damon et al., 1981 ], related to plate kinematics [Engebreston et al., 1985] and changes in the dip of the subducting Farallon plate [ Keith, 1982 ]. Diversité pétrologique du volcanisme plio...
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Journal Article
Journal: AAPG Bulletin
Published: 15 May 2019
AAPG Bulletin (2019) 103 (5): 1045-1069.
... that represents sedimentation after the end of subduction of the Farallon plate beneath the North America plate. Figure 2. Mesozoic–Cenozoic sedimentary units cropping out in San Diego County ( 1 ), the state of Baja California ( 2, 3 ), Cedros Island ( 4 ), and Vizcaino Peninsula (Vizc. Penin.) ( 5, 6...
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Journal Article
Journal: Economic Geology
Published: 01 June 2014
Economic Geology (2014) 109 (4): 1117-1135.
... volcanism that erupted into a large sedimentary basin. Volcanogenic sedimentation, including the Forest Reefs Volcanics, overwhelmed the fine-grained sedimentary component that characterized much of the Weemalla Formation. The Forest Reefs Volcanics evolved as a relatively low relief, multiple-vent...
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Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2407(13)
... the trench-normal component of subduction increased as a consequence of the breakup of the Farallon plate ( Pardo Casas and Molnar, 1987 ). Among these volcanic rocks are series of stratovolcanoes, calderas, and other minor volcanic centers that have erupted in Pliocene to Holocene times (e.g., Muñoz...
Series: Geological Society, London, Geology of Series
Published: 01 January 2007
DOI: 10.1144/GOCH.4
EISBN: 9781862393936
... et al. 1999 ; Kay & Mpodozis 2001 ) never attained along the SVZ. Arc volcanism ended around 7.5 Ma and magmatic activity increased in the backarc region, where the Farallón Negro volcanic cluster (27°S; 8.5–5.2 Ma) and the porphyries and domes in the Sierra de Famatina (29°S; 5 Ma) are found...
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