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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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<b>Cerro</b> <b>Galan</b> ignimbrite, Argentina, a ~1,000 km 3  dacite deposit from a sup...
in > Elements
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 <b>Cerro</b> <b>Galan</b> pumice. A...
in > Geology
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 <b>Cerro</b> <b>Galan</b>. Vesi...
in > Geology
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 <b>Cerro</b> <b>Galan</b> apatite phenocryst fragm...
in > Geology
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 <b>Cerro</b> <b>Galan</b> apatites. Note that this...
in > Geology
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...
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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...
Journal Article
Published: 01 May 2013
American Mineralogist (2013) 98 (5-6): 977-985.
...Liberto De Pablo Galan; Mercedes Doval; Angel La Iglesia; Jesus Soriano; Lourdes Chavez Abstract Cristobalite-tridymite blade nanocrystals cemented by SiO 2 -glass and tridymite nanocrystals fill separately SiO 2 -glass spherules released by explosive volcanism, in rhyolitic tuffs from the Province...
FIGURES | View All (6)
Series: Geological Society, London, Special Publications
Published: 01 January 2010
DOI: 10.1144/SP337.7
EISBN: 9781862395855
... Zr–Hf anomaly in the Cerro Pelado orthopyroxene contrasts with the small negative one in El Aprisco. Similar LREE–Th–U-enriched clinopyroxenes to those of lherzolite 72688 have been described in the Olot lherzolite xenolith suite ( Bianchini et al. 2007 ; Galán et al. 2008 ), but the upwards...
FIGURES | View All (14)
Journal Article
Published: 01 December 2016
European Journal of Mineralogy (2016) 28 (5): 1005-1017.
...Nikita V. Chukanov; Sergey M. Aksenov; Ramiza K. Rastsvetaeva; Gerhard Möhn; Vyacheslav S. Rusakov; Igor V. Pekov; Ricardo Scholz; Tatiana A. Eremina; Dmitriy I. Belakovskiy; Joachim A. Lorenz Abstract Magnesiovoltaite, a new voltaite-group mineral, was discovered in the Alcaparrosa mine, Cerro...
FIGURES | View All (10)
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Figure 2. Core to rim variations of Cl (light-gray bars) and OH (dark-gray ...
in > Geology
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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Interpretations of geophysical and petrochemical forensics of the Central A...
in > Elements
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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A: Synchrotron-based X-ray tomographic image of Monte Pilato pumice (from A...
in > Geology
Published: 01 November 2009
vesicles on right (mode 24 μm diameter). B: Asymmetric vesicles around quartz crystal in Cerro Galan pumice define stair-stepping to right, as in dextral shearing in rocks (interpretation in inset). Plane polarized light photomicrograph.
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A: Backscattered electron image of two bands of elongated vesicles around s...
in > Geology
Published: 01 November 2009
Figure 3. A: Backscattered electron image of two bands of elongated vesicles around subequant vesicles that surround central biotite crystal in Cerro Galan pumice clast. Horizontal band (below crystal) has symmetric vesicles (median aspect ratio of 0.26), indicative of pure shear. Diagonal band
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Six selected graphs showing the influence of the number of clasts, clast ar...
Published: 01 November 2002
Figure 12 Six selected graphs showing the influence of the number of clasts, clast area, elongation, and vertical position of clasts in the exposure on R values. A given point shows the R value counted from differently collected clast increments. E.g., in the case of the Cerro Galan deposit