Glacial influence on caldera-forming eruptions

  title={Glacial influence on caldera-forming eruptions},
  author={A. Geyer and I. Bindeman},
  journal={Journal of Volcanology and Geothermal Research},
Abstract It has been suggested that deglaciations have influenced volcanism in several areas around the world increasing productivity of mantle melting and eruptions from crustal magma chambers. However, the connection between glaciations and increased volcanism is not straightforward. Investigation of Ar–Ar, U–Pb, and 14C ages of caldera-forming eruptions for the past million years in the glaciated arc of Kamchatka has lead to the observation that the majority of large-volume ignimbrites… Expand
Glaciovolcanism at Volcán Sollipulli, southern Chile: Lithofacies analysis and interpretation
Magma–ice–meltwater interactions produce diverse landforms and lithofacies, reflecting the multitude of factors that influence glaciovolcanism, including both magmatic (e.g., composition, eruptionExpand
Somma-Vesuvius ground deformation over the last glacial cycle
Abstract Vertical ground movements at Somma-Vesuvius during the last glacial cycle have been inferred from micropalaeontological and petrochemical analyses of rock samples from boreholes drilled atExpand
Multi-Cyclic and Isotopically Diverse Silicic Magma Generation in an Arc Volcano: Gorely Eruptive Center, Kamchatka, Russia
The Kamchatka Peninsula is home to some of the most frequent and prolific subduction-related volcanic activity in the world, with the largest number of caldera-forming eruptions per length of theExpand
The relationship between glaciation and volcanism: Numerical simulation and the Holocene volcanism in Kamchatka
This study is concerned with numerical simulation of the strain due to glaciation and glacial melting, when a magma zone (a layer containing inclusions of magma and magma cumulates) is present at theExpand
Thermo-mechanical effects of magma chambers and caldera faults
The subsurface structures of caldera ring faults are often inferred from numerical and analog models as well as from geophysical studies. All of these inferred structures need to be compared withExpand
Deglaciation and glacial erosion: A joint control on magma productivity by continental unloading
Glacial-interglacial cycles affect the processes through which water and rocks are redistributed across the Earth's surface, thereby linking the solid Earth and climate dynamics. Regional and globalExpand
Volcanic activity and its link to glaciation cycles: Single-grain age and geochemistry of Early to Middle Miocene volcanic glass from ANDRILL AND-2A core, Antarctica
Abstract In the frame of the ANtarctic DRILLing Program, volcanic glass fragments were collected from the AND-2A core between ~ 354 and 765 m below sea floor (mbsf) as accumulations (5–70 vol.%)Expand
Geology and tectonics of the southwestern boundary of the unstable sector of Mt. Etna (Italy)
Abstract The Etna volcano is known to be unstable and gradually moving downslope toward east and south. The study of the local geology and structure of these unstable flanks and of their boundariesExpand
Delayed CO 2 Emissions From Mid-Ocean Ridge Volcanism as a Possible Cause of Late-Pleistocene Glacial Cycles
The coupled 100,000 year variations in ice volume, temperature, and atmospheric CO2 during the late Pleistocene are generally considered to arise from a combination of orbital forcing, ice dynamics,Expand
Petrology and geochemistry of three Early Holocene eruptions from Makushin Volcano, Alaska
Makushin stratovolcano, Alaska, produced three, highly explosive, andesitic eruptions between ~ 9292 and 6215 yBP. Those eruptions are informally named the CFE (“crater-forming eruption”), Nateekin,Expand


Deglaciation effects on mantle melting under Iceland: results from the northern volcanic zone
Abstract A striking feature of Icelandic volcanism is the effect that the last ice age had on volcanic activity. After the final retreat of ice ∼11 kyr BP, the average eruption rate is estimated toExpand
Did melting glaciers cause volcanic eruptions in eastern California? Probing the mechanics of dike formation
[1] A comparison of time series of basaltic and silicic eruptions in eastern California over the last 400 kyr with the contemporaneous global record of glaciation suggests that this volcanism isExpand
Large-volume silicic volcanism in Kamchatka: Ar-Ar and U-Pb ages, isotopic, and geochemical characteristics of major pre-Holocene caldera-forming eruptions
Abstract The Kamchatka Peninsula in far eastern Russia represents the most volcanically active arc in the world in terms of magma production and the number of explosive eruptions. We investigateExpand
On the formation of calderas during ignimbrite eruptions
Many large calderas result from the eruption of substantial volumes (tens or hundreds of km3) of silicic pyroclastics. Such events often begin with an airfall phase and progress to the generation ofExpand
Caldera formation by magma withdrawal from a reservoir beneath a volcanic edifice
Caldera formation has been explained by magma withdrawal from a crustal reservoir, but little is known about the conditions that lead to the critical reservoir pressure for collapse. During anExpand
Conceptual and Numerical Models of Ring-Fault Formation in Composite Volcanoes
Kristine Nilsen, Gabriele Ertl, Isabel Bivour, Agust Gudmundsson Department of Structural Geology and Geodynamics, Geoscience Center, University of Gottingen, Germany Sponsored by Agust GudmundssonExpand
Mechanical aspects of postglacial volcanism and tectonics of the Reykjanes Peninsula, southwest Iceland
Four major NE trending postglacial volcanic and tectonic fissure swarms (volcanic systems) occur on the Reykjanes Peninsula, and the westernmost three are the main subject of this paper. Two mainExpand
Climate effects on volcanism: influence on magmatic systems of loading and unloading from ice mass variations, with examples from Iceland
  • F. Sigmundsson, V. Pinel, +4 authors E. Sturkell
  • Geology, Medicine
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2010
A viscoelastic model of glacio-isostatic adjustment that considers melt generation demonstrates how surface unloading may lead to a pulse in magmatic activity and predicts a significant amount of 'additional' magma generation under Iceland due to ice retreat. Expand
Fire or ice: anticorrelation of volcanism and glaciation in California over the past 800,000 years
Compilation of published ages of Quaternary volcanism in eastern California indicates that volcanism was episodic, with maxima occurring during interglacial periods. The smoothed age distributionExpand
Pressure evolution during explosive caldera-forming eruptions
Abstract Caldera-forming eruptions of silicic magmas result from a complex coupling of the mechanics and fluid dynamics of the associated magma chamber. Field studies of caldera-forming eruptionExpand