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Cerro Galan

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Journal Article
Published: 01 September 1989
Geological Magazine (1989) 126 (5): 515–547.
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<span class="search-highlight">Cerro</span> <span class="search-highlight">Galan</span> ignimbrite, Argentina, a ~1,000 km 3  dacite deposit from a sup...
Published: 01 April 2016
Cerro Galan ignimbrite, Argentina, a ~1,000 km 3 dacite deposit from a supereruption 2 million years ago.
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Backscattered electron images of deformed vesicles in <span class="search-highlight">Cerro</span> <span class="search-highlight">Galan</span> pumice. A...
Published: 01 November 2009
Figure 2. Backscattered electron images of deformed vesicles in Cerro Galan pumice. A: Band of elongated, asymmetric vesicles, >25 μm wide, is sharply separated from zones of rounded, subequant, and much larger vesicles. Large (>200 and 300 μm) biotite phenocrysts are present 120 and 150 μm
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A: Domainal variations in heterogeneous pumice clast from <span class="search-highlight">Cerro</span> <span class="search-highlight">Galan</span>. Vesi...
Published: 01 November 2009
Figure 4. A: Domainal variations in heterogeneous pumice clast from Cerro Galan. Vesicle size varies by factor of 100, accompanied by fabric changes indicative of strain localization. B: Asymmetric vesicles and glass walls in region of small vesicles indicative of dextral shearing. C
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Figure 1. Cathodoluminescence image of <span class="search-highlight">Cerro</span> <span class="search-highlight">Galan</span> apatite phenocryst fragm...
Published: 01 January 2008
Figure 1. Cathodoluminescence image of Cerro Galan apatite phenocryst fragment showing concentric zoning in trace elements. NB: This grain was not analyzed due to excessive fracturing during polishing, but it demonstrates the zoning typical of these apatites. Image courtesy of J. Vazquez
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Figure 3. F-OH-Cl ternary diagrams for <span class="search-highlight">Cerro</span> <span class="search-highlight">Galan</span> apatites. Note that this...
Published: 01 January 2008
Figure 3. F-OH-Cl ternary diagrams for Cerro Galan apatites. Note that this is only the upper corner of total apatite ternary space, with Cl and OH < 24 mol% each (shaded region of small ternary at bottom of figure). Gray symbols show data from all five crystals, for reference, with different
Series: GSA Memoirs
Published: 01 January 2015
DOI: 10.1130/2015.1212(03)
... in the southern Puna Plateau is centered approximately between the Arizaro Basin and 6–2 Ma Cerro Galan volcanic field. The foundering in the northern location has progressed to the point where the main thermal anomaly resides in the middle and upper crust, and the surface volcanic flare-up and mantle thermal...
Series: GSA Memoirs
Published: 01 June 2009
DOI: 10.1130/2009.1204(11)
... by a moderately shallow slab producing widespread volcanism with subsequent steepening by 6 Ma, leading to delamination of dense lithosphere culminating in the eruption of the voluminous Cerro Galan ignimbrite at 2 Ma. ...
Journal Article
Journal: Geology
Published: 01 January 2008
Geology (2008) 36 (1): 63–66.
...Figure 1. Cathodoluminescence image of Cerro Galan apatite phenocryst fragment showing concentric zoning in trace elements. NB: This grain was not analyzed due to excessive fracturing during polishing, but it demonstrates the zoning typical of these apatites. Image courtesy of J. Vazquez...
FIGURES
Series: Special Publications of the Society of Economic Geologists
Published: 01 January 1999
DOI: 10.5382/SP.07.02
EISBN: 9781629490311
... eruptions of the Cerro Galán ignimbritic center, a concentration of primitive mafic lavas associated with normal and strike-slip faults, high average regional elevation, and seismic evidence for a thin underlying lithosphere and an abnormally hot subducting slab. Temporal variations in mantle-derived mafic...
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Models of assimilation-fractional crystallization (AFC) and mixing for Cerr...
Published: 25 January 2022
Figure 11. Models of assimilation-fractional crystallization (AFC) and mixing for Cerro Blanco volcanic complex rhyolites in isotope space. Parent magma is JC131, and basement/assimilant is the Cerro Galan ignimbrite. (A) Five models are shown: (i) 87 Sr/ 86 Sr vs. Rb/Sr with AFC curves
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Total alkalis vs. SiO 2  diagram after  Le Bas et al. (1986)  and  Le Maitr...
Published: 25 January 2022
, the 2.0 Ma Cerro Galan ignimbrite (CBI), other pre–La Hoyada ignimbrites (Aguada Alumbrera and Rosada), and JC131, a basaltic trachyandesite from the Antofagasta de la Sierra volcanic field used by Francis et al. (1989) as a potential proxy for the mafic input into the upper-crustal magma system
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Interpretations of geophysical and petrochemical forensics of the Central A...
Published: 01 August 2018
Figure 4 Interpretations of geophysical and petrochemical forensics of the Central Andean subcaldera crust. ( A ) Two seismic tomographic vertical slices through the lithosphere beneath the Altiplano–Puna Volcanic Complex (APVC) and Cerro Galán regions. Seismic images suggest the mid-crustal melt
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Harker diagrams for selected major elements, Rb, and Sr vs. SiO 2  for the ...
Published: 25 January 2022
for Na 2 O and MnO, are compatible. CBI—Cerro Galan ignimbrite; CPPI—Campo Piedra Pomez ignimbrite.
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Radiogenic isotope covariation diagrams for available data for <span class="search-highlight">Cerro</span> Blanco...
Published: 25 January 2022
(APVC) and Cerro Galan are from Folkes et al. (2013) . Note that Cerro Blanco volcanic complex rhyolites define a tight group within the southern Puna small ignimbrites. Symbols are the same as in previous figures above. See text for further discussion.
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Selected Harker diagrams of major-element oxides for matrix glass (gl) from...
Published: 25 January 2022
microanalysis (EPMA) spot analyses from a small subset of samples from the bulk-rock samples. CBI—Cerro Galan ignimbrite; CPPI—Campo Piedra Pomez ignimbrite.
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Figure 2. Core to rim variations of Cl (light-gray bars) and OH (dark-gray ...
Published: 01 January 2008
Figure 2. Core to rim variations of Cl (light-gray bars) and OH (dark-gray bars) in apatite phenocrysts from Cerro Galan ignimbrite, Argentina. Bars are 2σ (measurement error) in height and 8 μm in width, corresponding to the analyzed area of each spot.
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Plot of K 2 O vs. silica comparing the Wyoming batholith with eruptive prod...
Published: 01 June 2016
Figure 12 Plot of K 2 O vs. silica comparing the Wyoming batholith with eruptive products of Cerro Galán caldera, northwest Argentina ( Folkes et al. 2011 ). The small black dots represent analyses of ignimbrite glass and the field encompasses compositions of pumice clasts. Data sources
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Oxygen isotope values calculated from δ 18 O(Zc) for the early, most differ...
Published: 02 January 2003
Figure 29. Oxygen isotope values calculated from δ 18 O(Zc) for the early, most differentiated and late, least differentiated portions of major Quaternary ash flow tuffs. The good 1:1 correlation demonstrates vertical homogeneity of δ 18 O within the magma chambers. BT = Bishop Tuff; CG = Cerro
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Constraints on a likely crustal contaminant for the <span class="search-highlight">Cerro</span> Blanco volcanic c...
Published: 25 January 2022
similarity of Cerro Galan and Rosada ignimbrite with the felsic basement compositions. (B) Upper continental crust–normalized trace-element spider diagram (Taylor and McLennan, 1985) comparing basement with regional and local large ignimbrites, showing the general family resemblance. (C) Upper continental