Research project

Hydrothermal alteration of upper oceanic crust formed at fast spreading rates

Lead researchers:

Professor Damon Teagle
Status:

Not active

Project overview

Fast spreading rates occur at only 20% of the active ocean ridges, but approximately 50% of the present day ocean crust formed by fast spreading. Fast spread ocean crust is predicted to be relatively simple and most closely conform to the ideal Penrose stratigraphy. Here we wish to define the processes that govern the intensity and variability of chemical and isotopic exchange between seawater and basalts erupted at fast spreading rates, at a number of sites of different ages, extrusion styles, sedimentation rates, and basement topography. Chemical and isotopic fluxes calculated from these investigations will provide important tests of recent oceanic chemical balances for Sr, C, alkali elements, Si/Ge and U. This research will concentrate on Holes l256C and l256D drilled on ODP Leg 206, but also study Sites 595, 597, 1149, 1179, 1224 and 1243 that have received little attention.

Staff

Lead researchers

Professor Damon Teagle

Professor of Geochemistry

Research interests

formation and evolution of the ocean crust
fluid-rock interactions and Ore mineralisation
geochemical analysis

Connect with Damon

Email: Damon.Teagle@southampton.ac.uk

Research outputs

Variable Quaternary chemical weathering fluxes and imbalances in marine geochemical budgets

Derek Vance, Damon A.H. Teagle & Gavin L. Foster, 2009, Nature, 458(7237), 493-496

DOI: 10.1038/nature07828

Type: article

Determination of the volcanostratigraphy of oceanic crust formed at superfast spreading ridge: electrofacies analyses of ODP/IODP Hole 1256D

Masako Tominaga, Damon A. H. Teagle, Jeffrey C. Alt & Susumu Umino, 2009, Geochemistry, Geophysics, Geosystems, 10, Q01003

DOI: 10.1029/2008GC002143

Type: article

Origin of the sheeted dike complex at superfast spread East Pacific Rise revealed by deep ocean crust drilling at Ocean Drilling Program Hole 1256D

Susumu Umino, Laura Crispini, Paola Tartarotti, Damon A. H. Teagle, Jeffery C. Alt, Sumio Miyashita & Neil R. Banerjee, 2008, Geochemistry, Geophysics, Geosystems, 9, Q06O08

DOI: 10.1029/2007GC001760

Type: article

Hydrothermal fluid fluxes calculated from the isotopic mass balance of thallium in the ocean crust

S.G. Nielsen, M. Rehkamper, D.A.H. Teagle, D.A. Butterfield, J.C. Alt & A.N. Halliday, 2006, Earth and Planetary Science Letters, 251(1-2), 120-133

DOI: 10.1016/j.epsl.2006.09.002

Type: article

ODP Site 1224: a missing link in the investigation of seafloor weathering

H.J. Paul, K.M. Gillis, R.M. Coggon & D.A.H. Teagle, 2006, Geochemistry, Geophysics, Geosystems, 7, Q02003

DOI: 10.1029/2005GC001089

Type: article