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supereruptions

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Journal Article
Journal: Geology
Published: 01 June 2010
Geology (2010) 38 (6): 503-506.
...Kathryn E. Watts; William P. Leeman; Ilya N. Bindeman; Peter B. Larson Abstract Supereruptive volumes of low-δ 18 O rhyolites define the Snake River Plain–Yellowstone Plateau volcanic province, begging the question of the sources and the processes by which 18 O-depleted magmas are generated. New...
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Journal Article
Journal: Elements
Published: 01 February 2008
Elements (2008) 4 (1): 16.
...Calvin Miller; David Wark; Steve Self; Steve Blake; Dave John 1 How many supervolcanoes/supereruptions are known? Are there many more than are mentioned in the papers in this issue? There have been far more supereruptions than are mentioned in this issue. Those discussed here are the most...
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Journal Article
Journal: Elements
Published: 01 February 2008
Elements (2008) 4 (1): 11-15.
...Calvin F. Miller; David A. Wark Abstract Earth's largest volcanic eruptions were an order of magnitude larger than any witnessed by humans since the advent of civilization. These “supereruptions” have played an important role in our species' past and they pose a serious future threat. In this issue...
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Journal Article
Journal: Elements
Published: 01 February 2008
Elements (2008) 4 (1): 17-21.
... into the atmosphere during explosive supereruptions. As currently understood, large pools of explosive magma are produced by extracting interstitial liquid from long-lived “crystal mushes” (magmatic sponges containing >50 vol% of crystals) and collecting it in unstable liquid-dominated lenses. Magma chambers...
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Journal Article
Journal: Elements
Published: 01 February 2008
Elements (2008) 4 (1): 29-34.
...Colin J.N. Wilson Abstract Pyroclastic deposits and lava flows generated by supereruptions are similar to, but tens of times larger than, those observed in historic eruptions. Physical processes control eruption styles, which then dictate what products are available for sampling and how well...
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Journal Article
Journal: Elements
Published: 01 February 2008
Elements (2008) 4 (1): 41-46.
...Stephen Self; Stephen Blake Abstract Rare but extremely large explosive supereruptions lead to the catastrophic formation of huge calderas, devastation of substantial regions by pyroclastic flow deposits, and ash falls that cover continent-sized areas. The effects of future supereruptions...
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Journal Article
Journal: Geology
Published: 26 July 2017
Geology (2017) 45 (9): 843-846.
... Toba (Indonesia) supereruption. More precise 40 Ar/ 39 Ar dates are available for the timing of the Toba supereruption, but while greatly improved, ice core records are not tied to absolute chronologies over this specific time interval to test for synchronicity. Here we show a rapid transition...
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Image
Generalized caldera outlines for the three rhyolitic <b>supereruptions</b> investi...
Published: 01 June 2018
Figure 1. Generalized caldera outlines for the three rhyolitic supereruptions investigated in this study: Bishop (modified from Wilson and Hildreth 1997 ), Oruanui (modified from Wilson 2001 ), and Huckleberry Ridge ( Myers et al. 2016 ). Stars on each map represent sampling locations
Series: GSA Special Papers
Published: 01 April 2009
DOI: 10.1130/2009.453(04)
... discuss felsic (explosive) and mafic (flood lava) supereruptions and their potential atmospheric and environmental effects on both planets. On Earth, felsic supereruptions recur on average about every 100–200,000 years and our present knowledge of the 73.5 ka Toba eruption implies that such events can...
Journal Article
Journal: Elements
Published: 01 February 2008
Elements (2008) 4 (1): 23-28.
...Mary R. Reid Abstract Along-recognized correlation between the volume of major eruptions and the time interval between them suggests that magma may accumulate for about a million years before a supereruption. However, radiometric ages and time-dependent phenomena like crystal growth...
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Journal Article
Journal: Geology
Published: 01 January 2008
Geology (2008) 36 (1): 63-66.
...Jeremy W. Boyce; Richard L. Hervig Abstract Measurements of OH and Cl growth zoning in apatite phenocrysts from the Cerro Galan ignimbrite describe the tumultuous volatile history of a magma chamber in the days to months prior to a supereruption. The chemical stratigraphy in these crystals provides...
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Journal Article
Journal: Geology
Published: 01 January 2004
Geology (2004) 32 (1): 61-64.
... , Volcanic winter and accelerated glaciation following the Toba supereruption: Nature , v. 359 p. 50 - 52 . Rampino , M.R. , and Self , S. , 1993 , Climate-volcanism feedback and the Toba eruption of ∼74, 000 yr ago: Quaternary Research , v. 40 p. 269 - 280 . Rose , W.I...
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Journal Article
Journal: Geology
Published: 22 May 2019
Geology (2019)
...Kenneth S. Befus; Michael Manga Hollow reentrants in quartz phenocrysts from Yellowstone (western United States) caldera’s Lava Creek Tuff are preserved vestiges of bubbles in the supereruption’s pre-eruptive magma reservoir. We characterized the reentrants using a combination of petrographic...
Journal Article
Published: 01 June 2018
American Mineralogist (2018) 103 (6): 952-965.
...Figure 1. Generalized caldera outlines for the three rhyolitic supereruptions investigated in this study: Bishop (modified from Wilson and Hildreth 1997 ), Oruanui (modified from Wilson 2001 ), and Huckleberry Ridge ( Myers et al. 2016 ). Stars on each map represent sampling locations...
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Journal Article
Published: 01 May 2018
American Mineralogist (2018) 103 (5): 757-775.
...Elliot J. Swallow; Colin J.N. Wilson; Bruce L.A. Charlier; John A. Gamble Abstract The silicic (broadly dacitic to rhyolitic) magmatic systems that feed supereruptions show great diversity, but have in common a role for mafic (broadly basaltic to andesitic) magmas as drivers of the systems. Here we...
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Journal Article
Journal: Geology
Published: 01 August 2016
Geology (2016) 44 (8): 683-686.
... reservoirs that require time-integrated recharge rates of ∼1 × 10 −3 km 3 /yr, corresponding to high intrusive to extrusive ratios of 75: 1. This rate is below the ∼5 × 10 −3 km 3 /yr threshold proposed in the literature for incubating the supereruptions defining the flare-up. When accounting for the shorter...
Journal Article
Journal: GSA Bulletin
Published: 01 July 2016
GSA Bulletin (2016) 128 (7-8): 1121-1146.
... and associated ash-fall layers. One ignimbrite records the ca. 8.1 Ma Castleford Crossing eruption, which was of supereruption magnitude (∼1900 km 3 ). It covers 14,000 km 2 and exceeds 1.35 km thickness within a subsided, proximal caldera-like depocenter. Major- and trace-element data define three successive...
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Journal Article
Journal: Elements
Published: 01 April 2016
Elements (2016) 12 (2): 91-96.
... plutons, or are formed by processes separate from those which form granite plutons. Finding a consistent explanation for the silicic volcanic–plutonic relationship bears on important Earth science questions, including, “How is silicic continental crust formed?” and, “Can we predict supereruptions...
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Journal Article
Journal: Elements
Published: 01 April 2016
Elements (2016) 12 (2): 97-102.
... direct connections between plutons and small volcanic eruptions, it appears to be far too slow to support connections between most plutons and supereruptions. During the late 1980s to early 1990s, there was a revival of interest in the room problem for granite plutons ( Hutton 1988 ; Tikoff...
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Journal Article
Journal: Elements
Published: 01 April 2016
Elements (2016) 12 (2): 121-127.
...Matthew E. Pritchard; Patricia M. Gregg Abstract The accumulation of sizeable volumes of magma in the upper crust may produce plutons and/or result in supereruptions. Geophysical observations provide constraints on the rates, volumes, and melt distributions in magmatic systems, but they suffer from...
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