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Explosive volcanism on the ultraslow-spreading Gakkel ridge, Arctic Ocean
被引:0
|作者:
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
Adam Soule
机构:
[1] Woods Hole Oceanographic Institution,Department of Geology and Geochemistry
[2] Woods Hole,undefined
[3] Massachusetts 02543,undefined
[4] USA ,undefined
[5] Marine Science Institute,undefined
[6] University of Texas at Austin,undefined
[7] Port Aransas,undefined
[8] Texas 78373,undefined
[9] USA ,undefined
[10] Swedish Polar Secretariat,undefined
[11] Alfred Wegener Institute for Polar and Marine Research,undefined
[12] Johns Hopkins University,undefined
[13] Baltimore,undefined
[14] Maryland 21218,undefined
[15] USA ,undefined
[16] Göteborg University,undefined
[17] AIST,undefined
[18] Tsukuba Central 7,undefined
[19] 1-1-1 Higashi,undefined
[20] Japan ,undefined
[21] Ocean Research Institute,undefined
[22] University of Tokyo,undefined
[23] Minamidai,undefined
[24] Nakano,undefined
[25] Tokyo 164-8639,undefined
[26] Japan ,undefined
[27] Stockholm University,undefined
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摘要:
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.
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页码:1236 / 1238
页数:2
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