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Widespread tephra dispersal and ignimbrite emplacement from a subglacial volcano (Torfajökull, Iceland)

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Widespread tephra dispersal and ignimbrite emplacement from a subglacial volcano (Torfajökull, Iceland). / Moles, J.D.; McGarvie, Dave; Stevenson, J.A.; Sherlock, S.C.; Abbott, P.M.; Jenner, F.E.; Halton, A.M.

In: Geology, Vol. 47, No. 6, 01.06.2019, p. 577-580.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Moles, JD, McGarvie, D, Stevenson, JA, Sherlock, SC, Abbott, PM, Jenner, FE & Halton, AM 2019, 'Widespread tephra dispersal and ignimbrite emplacement from a subglacial volcano (Torfajökull, Iceland)', Geology, vol. 47, no. 6, pp. 577-580. https://doi.org/10.1130/G46004.1

APA

Moles, J. D., McGarvie, D., Stevenson, J. A., Sherlock, S. C., Abbott, P. M., Jenner, F. E., & Halton, A. M. (2019). Widespread tephra dispersal and ignimbrite emplacement from a subglacial volcano (Torfajökull, Iceland). Geology, 47(6), 577-580. https://doi.org/10.1130/G46004.1

Vancouver

Moles JD, McGarvie D, Stevenson JA, Sherlock SC, Abbott PM, Jenner FE et al. Widespread tephra dispersal and ignimbrite emplacement from a subglacial volcano (Torfajökull, Iceland). Geology. 2019 Jun 1;47(6):577-580. https://doi.org/10.1130/G46004.1

Author

Moles, J.D. ; McGarvie, Dave ; Stevenson, J.A. ; Sherlock, S.C. ; Abbott, P.M. ; Jenner, F.E. ; Halton, A.M. / Widespread tephra dispersal and ignimbrite emplacement from a subglacial volcano (Torfajökull, Iceland). In: Geology. 2019 ; Vol. 47, No. 6. pp. 577-580.

Bibtex

@article{c7cc0448aa8340989a856b288ed4191f,
title = "Widespread tephra dispersal and ignimbrite emplacement from a subglacial volcano (Torfaj{\"o}kull, Iceland)",
abstract = "The tephra dispersal mechanisms of rhyolitic glaciovolcanic eruptions are little known, but can be investigated through the correlation of eruptive products across multiple depositional settings. Using geochemistry and geochronology, we correlate a regionally important Pleistocene tephra horizon-the rhyolitic component of North Atlantic Ash Zone II (II-RHY-1)-and the Th{\'o}rsm{\"o}rk Ignimbrite with rhyolitic tuyas at Torfaj{\"o}kull volcano, Iceland. The eruption breached an ice mass > 400 m thick, leading to the widespread dispersal of II-RHY-1 across the North Atlantic and the Greenland ice sheet. Locally, pyroclastic density currents traveled across the ice surface, depositing the variably welded Th{\'o}rsm{\"o}rk Ignimbrite beyond the ice margin and ~30 km from source. The widely dispersed products of this eruption represent a valuable isochronous tie line between terrestrial, marine, and ice-core paleoenvironmental records. Using the tephra horizon, estimates of ice thickness and extent derived from the eruption deposits can be directly linked to the regional climate archive, which records the eruption at the onset of Greenland Stadial 15.2. {\textcopyright} 2019 Geological Society of America.",
keywords = "Geochronology, Thorium compounds, Volcanoes, Depositional setting, Eruption deposits, Greenland Ice Sheet, North Atlantic, Pyroclastic density currents, Regional climate, Tephra dispersal, Widespread tephra, Ice",
author = "J.D. Moles and Dave McGarvie and J.A. Stevenson and S.C. Sherlock and P.M. Abbott and F.E. Jenner and A.M. Halton",
year = "2019",
month = jun,
day = "1",
doi = "10.1130/G46004.1",
language = "English",
volume = "47",
pages = "577--580",
journal = "Geology",
issn = "0091-7613",
publisher = "Geological Society of America",
number = "6",

}

RIS

TY - JOUR

T1 - Widespread tephra dispersal and ignimbrite emplacement from a subglacial volcano (Torfajökull, Iceland)

AU - Moles, J.D.

AU - McGarvie, Dave

AU - Stevenson, J.A.

AU - Sherlock, S.C.

AU - Abbott, P.M.

AU - Jenner, F.E.

AU - Halton, A.M.

PY - 2019/6/1

Y1 - 2019/6/1

N2 - The tephra dispersal mechanisms of rhyolitic glaciovolcanic eruptions are little known, but can be investigated through the correlation of eruptive products across multiple depositional settings. Using geochemistry and geochronology, we correlate a regionally important Pleistocene tephra horizon-the rhyolitic component of North Atlantic Ash Zone II (II-RHY-1)-and the Thórsmörk Ignimbrite with rhyolitic tuyas at Torfajökull volcano, Iceland. The eruption breached an ice mass > 400 m thick, leading to the widespread dispersal of II-RHY-1 across the North Atlantic and the Greenland ice sheet. Locally, pyroclastic density currents traveled across the ice surface, depositing the variably welded Thórsmörk Ignimbrite beyond the ice margin and ~30 km from source. The widely dispersed products of this eruption represent a valuable isochronous tie line between terrestrial, marine, and ice-core paleoenvironmental records. Using the tephra horizon, estimates of ice thickness and extent derived from the eruption deposits can be directly linked to the regional climate archive, which records the eruption at the onset of Greenland Stadial 15.2. © 2019 Geological Society of America.

AB - The tephra dispersal mechanisms of rhyolitic glaciovolcanic eruptions are little known, but can be investigated through the correlation of eruptive products across multiple depositional settings. Using geochemistry and geochronology, we correlate a regionally important Pleistocene tephra horizon-the rhyolitic component of North Atlantic Ash Zone II (II-RHY-1)-and the Thórsmörk Ignimbrite with rhyolitic tuyas at Torfajökull volcano, Iceland. The eruption breached an ice mass > 400 m thick, leading to the widespread dispersal of II-RHY-1 across the North Atlantic and the Greenland ice sheet. Locally, pyroclastic density currents traveled across the ice surface, depositing the variably welded Thórsmörk Ignimbrite beyond the ice margin and ~30 km from source. The widely dispersed products of this eruption represent a valuable isochronous tie line between terrestrial, marine, and ice-core paleoenvironmental records. Using the tephra horizon, estimates of ice thickness and extent derived from the eruption deposits can be directly linked to the regional climate archive, which records the eruption at the onset of Greenland Stadial 15.2. © 2019 Geological Society of America.

KW - Geochronology

KW - Thorium compounds

KW - Volcanoes

KW - Depositional setting

KW - Eruption deposits

KW - Greenland Ice Sheet

KW - North Atlantic

KW - Pyroclastic density currents

KW - Regional climate

KW - Tephra dispersal

KW - Widespread tephra

KW - Ice

U2 - 10.1130/G46004.1

DO - 10.1130/G46004.1

M3 - Journal article

VL - 47

SP - 577

EP - 580

JO - Geology

JF - Geology

SN - 0091-7613

IS - 6

ER -