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SUMMARY:Ridge flank hydrothermal contributions to global biogeochemical cy
 cles and archives of changing global conditions: Insights from the IODP So
 uth Atlantic Transect - Dr Rosalind Coggon (University of Southampton)
DTSTART;VALUE=DATE-TIME:20260306T120000Z
DTEND;VALUE=DATE-TIME:20260306T130000Z
UID:https://talks.ox.ac.uk/talks/id/19769ade-e33e-4e52-a60e-74c0890ac53d/
DESCRIPTION:Throughout its life the ocean crust is a key boundary between 
 Earth’s interior and the oceans/atmosphere. Hydrothermal circulation of 
 seawater-derived fluids through the cooling and aging crust results in che
 mical exchange between Earth’s interior and oceans and atmosphere\, play
 ing an important role in long-term biogeochemical cycles. Altered ocean cr
 ust provides a time-integrated record of its geochemical exchange with sea
 water. Furthermore\, hydrothermal minerals formed from ridge flank fluids 
 record the evolving chemistry of the overlying oceans – itself an integr
 ator of a range of Earth processes. I will present an overview of how scie
 ntific ocean drilling experiments across ridge flanks contribute to our un
 derstanding of the processes that control ridge flank hydrothermal exchang
 es\, the role these exchanges play in global geochemical cycles\, and the 
 extent to which they record and respond to wider changes in the Earth syst
 em. In particular\, the South Atlantic Transect (IODP Expeditions 390/393)
 \, designed to recover the upper crust and overlying sediments across the 
 western flank of the slow-spreading Mid-Atlantic Ridge to investigate hydr
 othermal aging and microbiological evolution of the ocean crust\, and the 
 paleoceanographic evolution of the overlying South Atlantic. \nSpeakers:\n
 Dr Rosalind Coggon (University of Southampton)
LOCATION:Department of Earth Sciences (Seminar rooms)\, South Parks Road O
 X1 3AN
TZID:Europe/London
URL:https://talks.ox.ac.uk/talks/id/19769ade-e33e-4e52-a60e-74c0890ac53d/
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DESCRIPTION:Talk:Ridge flank hydrothermal contributions to global biogeoch
 emical cycles and archives of changing global conditions: Insights from th
 e IODP South Atlantic Transect - Dr Rosalind Coggon (University of Southam
 pton)
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