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Figure 2: (left) A segment of raw Reson 8160 multibeam data
(grid node spacing 50 m) showing a seamount and scarp (sampling
targets on VSR2W). The multibeam swath echosounder was fitted
to the hull of the R/V Celtic Explorer especially for the survey and
achieved a swath width of ~3 km in 2000-m water depth.
Figure 3: Able-bodied seaman ‘Vinney’ and bosun ‘Davey’ celebrate
a haul of fresh glassy basalt from VSR2W, SW of Iceland.
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interaction between the Iceland Plume and the Reyjkanes
Ridge: a geochemical perspective. J. Petrology, 43, 10,
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Taylor, R.N., B.J. Murton, & M.F. Thirlwall, Petrogenetic and
geochemical variation along the Reykjanes Ridge, 57°N -
59°N. Journ. Geol. Soc. 152, 1031-1037, 1995.
Taylor, R.N., M.F. Thirlwall, B.J. Murton, et al., Isotopic constraints
on the influence of the Icelandic Plume. Earth Planet.
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Vogt, P.R., Asthenospheric motion recorded by the ocean floor
south of Iceland. Earth Planet. Sci. Lett. 13, 153-164, 1971.
Vogt, P.R., The Icelandic Phenomenon: Imprints of hot-spot
on the ocean crust, implications for flow beneath plates. In:
Kristjonsson, L. (Ed.) Geodynamics of Iceland and the north
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Structure and development of the axial volcanic ridge: Cruise JC24 to the Mid-
Atlantic Ridge, 45°N
Roger Searle 1 , Bramley Murton 2 and the JC24 Shipboard Scientific Party (Kay Achenbach 1 , Pedro Ferreira 3 , Tim
LeBas 2 , Chris Mallows 1 , Kirsty Morris 2 , Nicole Schroth 2 , Maurice Tivey 4 , Peter van Calsteren 5 , Chris Waters 4 and
Isobel Yeo 1 )
Background and objectives
This study grew out of discussions at the 1 st InterRidge Theoretical
Institute on “The Thermal Regime of Ocean Ridges
and Dynamics of Hydrothermal Circulation” at Sestri Levanti,
Italy, in September 2002. The workshop led to one of us (RS)
convening, with Jian Lin (current InterRidge Chair), a special
session at the EGS-AGU-EUG Joint Assembly in April 2003
on “High Resolution Geophysical Imaging and Geological
Sampling Studies of Young Ocean Floor,” at which RS, BM,
MT and others began the planning of this project.
1
Dept. Earth Sciences, Durham University, Durham, DH1 3LE, UK; 2 National Oceanography Centre, Southampton, UK; 3 Instituto
Nacional de Engenharia, Tecnologia e Inovação, and CREMINER, Universidade de Lisboa, Portugal; 4 Dept. Geology and Geophysics,
Woods Hole Oceanographic Institution, Woods Hole, MA, USA; 5 Dept. Earth Sciences, Open University, Milton Keynes, UK
InterRidge News 11 Vol. 17, 2008