Explosive volcanism on the ultraslow-spreading Gakkel ridge, Arctic Ocean

Robert A. Sohn (), Claire Willis, Susan Humphris, Timothy M. Shank, Hanumant Singh, Henrietta N. Edmonds, Clayton Kunz, Ulf Hedman, Elisabeth Helmke, Michael Jakuba, Bengt Liljebladh, Julia Linder, Christopher Murphy, Ko-ichi Nakamura, Taichi Sato, Vera Schlindwein, Christian Stranne, Maria Tausenfreund, Lucia Upchurch, Peter Winsor, Martin Jakobsson and Adam Soule
Additional contact information
Robert A. Sohn: Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA
Claire Willis: Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA
Susan Humphris: Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA
Timothy M. Shank: Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA
Hanumant Singh: Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA
Henrietta N. Edmonds: Marine Science Institute, University of Texas at Austin, Port Aransas, Texas 78373, USA
Clayton Kunz: Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA
Ulf Hedman: Swedish Polar Secretariat
Elisabeth Helmke: Alfred Wegener Institute for Polar and Marine Research
Michael Jakuba: Johns Hopkins University, Baltimore, Maryland 21218, USA
Bengt Liljebladh: Göteborg University
Julia Linder: Alfred Wegener Institute for Polar and Marine Research
Christopher Murphy: Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA
Ko-ichi Nakamura: AIST, Tsukuba Central 7, 1-1-1 Higashi, Japan
Taichi Sato: Ocean Research Institute, University of Tokyo, Minamidai, Nakano, Tokyo 164-8639, Japan
Vera Schlindwein: Alfred Wegener Institute for Polar and Marine Research
Christian Stranne: Göteborg University
Maria Tausenfreund: Alfred Wegener Institute for Polar and Marine Research
Lucia Upchurch: Marine Science Institute, University of Texas at Austin, Port Aransas, Texas 78373, USA
Peter Winsor: Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA
Martin Jakobsson: Stockholm University
Adam Soule: Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA

Nature, 2008, vol. 453, issue 7199, 1236-1238

Abstract: Deep-sea volcanism on the Gakkel Ridge The latest deep submergence technologies have been used to perform the first high-definition photographic survey of the ultra-slow spreading Gakkel Ridge in the Arctic Basin, focusing on an area that is believed to have experienced a major eruption event in 1999. The images show that the axial valley at 4,000 m water depth is blanketed by an extensive set of pyroclastic deposits, raising important questions regarding the accumulation and discharge of magmatic volatiles on such ridges and demonstrating that large-scale pyroclastic activity is possible along even the deepest portions of the global mid-ocean ridge volcanic system.

Date: 2008
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DOI: 10.1038/nature07075

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