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Ocean and Earth Science, National Oceanography Centre Southampton
Phone:
(023) 8059 6621
Email:
R.M.Coggon@soton.ac.uk

Dr Rosalind Coggon PhD

Royal Society University Research Fellow

Dr Rosalind Coggon's photo

Dr Rosalind Coggon is Royal Society University Research Fellow within Ocean and Earth Science, National Oceanography Centre Southampton at the University of Southampton.

Employment:
Oct 2018-present: Royal Society University Research Fellow, School of Ocean and Earth Science, University of Southampton.
2016-2018: Research Fellow and UK-IODP renewal coordinator, School of Ocean and Earth Science, University of Southampton.
2013-2016: Royal Society Dorothy Hodgkin Research Fellow, School of Ocean and Earth Science, University of Southampton.
2010-2013: Royal Society Dorothy Hodgkin Research Fellow, Dept. Earth Science and Engineering, Imperial College London.
2007-2010: Post-doctoral Research Scientist, Imperial College London.
2006-2007: Post-doctoral Research Scientist, Dept. Geological Sciences, University of Michigan, USA
2006: UK-IODP Post-doctoral Research Scientist, University of Southampton.

Qualifications:
2001-2006: PhD – Ocean and Earth Science, University of Southampton "Hydrothermal alteration of the ocean crust: insights from Macquarie Island and drilled in situ ocean crust".
1997-2001: MSci & MA Natural Sciences, University of Cambridge (1st Class Honours).

Research interests

Specialism: Geochemistry and hydrothermal alteration of ocean crust

  • Formation and evolution of the ocean crust
  • Ocean floor hydrothermal systems
  • Global geochemical cycles
  • Geological storage of CO2 into oceanic crust
  • Reconstructing records of past seawater chemistry

My research focuses on the role of fluids in the formation and evolution of the ocean crust, with a particular emphasis on quantifying the thermally driven chemical exchanges between the aging ocean crust and the overlying oceans and their influence on global geochemical cycles.

Ocean crust is produced along the submarine volcanic mid-ocean ridges repaving two-thirds of Earth's surface every 200 million years. However, it remains relatively unexplored, accessible only using submersibles or scientific ocean drilling. Such exploration revealed that seawater circulates through cracks in the cooling ocean crust, reacts with the rocks, transporting heat and chemicals to the oceans. At the ridges this occurs through spectacular 'hydrothermal' hot springs but quantitatively more important reactions occur during lower-temperature fluid flow on the vast ridge flanks. Unfortunately, we do not know how long hydrothermal exchange persists in aging ocean crust, and hence how it affects ocean chemistry. However, we have shown that hydrothermal minerals record the chemistry of the fluids they precipitate from, and can be used to calculate past ocean chemistry.
I am heavily involved in scientific ocean drilling, and am currently leading an International Ocean Discovery Program project (IODP Expeditions 390 & 393) designed to investigate the ocean crust as an archive of past seawater chemistry by drilling an age transect (<63 Ma) of basement holes across the western flank of the Southern Mid-Atlantic ridge.

Research projects
I am involved in the following current projects:

  • Calcium carbonate veins as recorders of past ocean chemistry
  • Geological storage of CO2 into oceanic crust
  • Mission MoHole, A Journey into the Mantle
  • Superfast spread crust, deep drilling at IODP Site 1256

Research group

Geochemistry

Research project(s)

Calcium carbonate veins as recorders of past ocean chemistry

Geological storage of CO2 into oceanic crust

Mission MoHole, A Journey into the Mantle.

Superfast spread crust, deep drilling at IODP Site 1256

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Dr Rosalind Coggon
Ocean and Earth Science
National Oceanography Centre Southampton
University of Southampton Waterfront Campus
European Way
Southampton SO14 3ZH
UK

Room Number: NOCS/566/12

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