Apologies for cross-posting
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Two Postdoctoral Research Associates in Marine Geophysics at Durham
University
Applications are invited for two Postdoctoral Research Associates to
join the NERC-funded projects
“Role and Extent of Detachment Faulting at Slow-Spreading Mid-Ocean Ridges”
and
“CAYSEIS - Crustal Accretion and Transform Margin Evolution at Ultraslow
Spreading Rates”
We seek enthusiastic and experienced wide-angle, controlled-source
seismologists, wishing to work within an innovative, international and
interdisciplinary research team based at the Department of Earth
Sciences, Durham University. We offer opportunities to develop project
supervision and management skills, whilst gaining experience of the
operation of sea-going geophysical instrumentation and the planning and
execution of research cruises at sea.
Further information can be found at:
https://www.dur.ac.uk/christine.peirce/13N_MAR/further_particulars.pdf
or
https://www.dur.ac.uk/christine.peirce/cayman_trough/further_particulars.pdf
or by contacting
Professor Christine Peirce ([log in to unmask]).
The closing date for both posts is 31st July 2015.
Applications can be made via Durham University’s online job site
https://www.dur.ac.uk/jobs/
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The projects:
A) Role and Extent of Detachment Faulting at Slow-Spreading Mid-Ocean Ridges
This collaborative research project has Project Partners at the
Universities of Birmingham and Cardiff and Woods Hole Oceanographic
Institution, and will investigate the processes of oceanic crustal
accretion at slow spreading rates, in particular the role played by
large-offset normal “detachment” faults in the formation of oceanic core
complexes at 13N on the Mid-Atlantic Ridge.
As part of the project an extensive geophysical dataset will be acquired
during a cruise on the research vessel James Cook to 13N on the
Mid-Atlantic Ridge in Jan-Mar 2016. The post-holder will be expected to
participate in this research cruise and, subsequently, analyse and
interpret the 3D ocean-bottom seismograph wide-angle, controlled-source
seismic data acquired, together with the coincident gravity and magnetic
profiles.
The primary focus of this post will be to determine the geometry and
extent of surface observable features at depth, using P- and S-wave
3D-volume velocity models, to reveal how detachments relate to magmatic
accretion in time and space. The results of this research will be
integrated with those of in-parallel studies of local seismicity and
multichannel seismic crustal imaging being undertaken by our collaborators.
B) CAYSEIS - Crustal Accretion and Transform Margin Evolution at
Ultraslow Spreading Rates
This collaborative research project has Project Partners at Geomar in
Germany and at the Institute of Geophysics at the University of Texas,
and will investigate the temporal and spatial interplay between magmatic
accretion and amagmatic tectonic extension, and the controls on and
relationship between faulting and hydrothermal activity at the ultraslow
spreading Mid-Cayman Spreading Centre in the Caribbean.
As part of the project an extensive geophysical dataset has already been
acquired during a cruise on the research vessel Meteor to the Cayman
Trough in April 2015. The post-holder will analyse and interpret
ocean-bottom seismograph wide-angle seismic data, together with gravity
and magnetic profiles, acquired in the vicinity of the Mid-Cayman
Spreading Centre and Swan Island Transform intersection; the latter
marks the edge of the Honduran Transform margin and juxtaposes
newly-formed oceanic crust against old continental crust. The primary
focus of this post will be how mantle upwelling and along-ridge magmatic
plumbing may be impeded by the cooling affect of adjacent continental
lithosphere, testing models of transform continental margin evolution.
There may also be an opportunity for the post-holder to participate in a
cruise on the research vessel James Cook to 13N on the Mid-Atlantic
Ridge in Jan-Mar 2016.
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Professor C. Peirce
Department of Earth Sciences
Durham University
Durham
DH1 3LE
Tel: 0191 334 2315
Fax: 0191 334 2301
www: http://www.dur.ac.uk/earth.sciences
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