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Earth Institute Research Projects

Collaborative Research: A MCS Investigation to Study Axial Crustal Structure and Alteration of Upper Crust at the Juan de Fuca Spreading Center

Lead PI: Dr. Suzanne M. Carbotte , John Diebold

Unit Affiliation: Marine Geology & Geophysics, Lamont-Doherty Earth Observatory (LDEO)

April 2002 - March 2006
Inactive
Pacific Ocean ; Juan de Fuca Ridge
Project Type: Research

DESCRIPTION: This project is an integrated multichannel seismic investigation of the intermediate-spreading Juan de Fuca Ridge. The primary goals are: (1) to determine the location, size and physical properties of crustal magma bodies along the ridge and relate these properties to the recent eruptive history of the ridge, (2) to measure the variation invelocity and thickness of the indicators of magmatic state, and (3) to characterize the alteration history of the upper crust as a function of sedimentation history, crustal age and basement relief.

SPONSOR:

National Science Foundation (NSF)

FUNDED AMOUNT:

$384,324

EXTERNAL COLLABORATORS:

Scripps Institution of Oceanography, WHOI

WEBSITE:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=0002488&HistoricalAwards=false

PUBLICATIONS:

Arnulf, A.F., A. J. Harding, G. M. Kent, S. M. Carbotte,, J. P. Canales and M. R. Nedimović, Anatomy of an active submarine volcano, Geology, 42 (8), 655-658.

Marjanovic, M., S. Carbotte, M. R. Nedimović, J.P. Canales, Gravity and Seismic Study of Crustal Structure Along the Juan de Fuca Ridge Axis and Across Pseudofaults on the Ridge Flanks, Geochem. Geophys. Geosyst., 12, Q05008, doi:10.1029/2010GC003439, 2011.

Newman, K., M. R. Nedimović, J. P. Canales and S. M. Carbotte Evolution of seismic layer 2B at the Juan 1 de Fuca Ridge from hydrophone streamer 2D traveltime tomography, Geochem. Geophys. Geosyst., 12, Q05009, doi:10.1029/2010GC003462, 2011.

Nedimovic, M.R., Bohnenstiehl, D. Carbotte, S.M., J.P. Canales, and R.P. Dziak, Faulting and hydration of the Juan de Fuca plate system, Earth Planet. Sci. Lett. doi:10.1016/j.epsl.2009.04.013, 2009.

Canales, J.P., Nedimović, M. R., Kent G., Carbotte, S.M., and R. S. Detrick, Seismic reflection images of a near-axis melt sill within the lower crust at the Juan de Fuca Ridge, Nature, 460, 89-93, doi:10.1038/nature08095, 2009.

Nedimovic, M., S.M. Carbotte, J. B. Diebold, , A.J. Harding , J.P. Canales, G.M. Kent, Upper crustal evolution along the Juan de Fuca ridge flanks. Geochem. Geophys. Geosyst. 9, doi:10.1029/2008GC002085. 2008.

Carbotte, S.M., M. Nedimovic, J.P. Canales, G.M. Kent, , A.J. Harding, M. Marjanovic, Variable crustal structure along the Juan de Fuca Ridge: influence of on-axis hot spots and absolute plate motions. Geochem. Geophys. Geosyst. 9, doi:10.1029/2007GC001922. 2008.

Van Ark, E. M., R. S. Detrick, J. P. Canales, S. M. Carbotte, A. J. Harding, G. M. Kent, M. R. Nedimovic, W. S. D. Wilcock, J. B. Diebold, and J. M. Babcock, Seismic structure of the Endeavour Segment, Juan de Fuca Ridge: Correlations with seismicity and hydrothermal activity, J. Geophys. Res., 112, B02401, doi:10.1029/2005JB004210, 2007.

Carbotte, S.M., R. S. Detrick, A. Harding, J.P. Canales, J. Babcock, G. Kent, E. Van Ark, M. Nedimovic, J. Diebold, Rift topography linked to magmatism at the intermediate spreading Juan de Fuca Ridge. Geology, 34, 209–212, 2006.

Canales, J. P. , Singh, Satish C. , Detrick, R. S., Carbotte, S. M. Harding, A. , Kent, G. M., Diebold, J. B. J. Babcock, Nedimovic, M. R., Seismic Evidence for Variations in Axial Magma Chamber Properties Along the Southern Juan de Fuca Ridge, Earth Planet. Sci. Lett. 246, 353-366, 2006.

Nedimovic, M Carbotte, S. Harding, A, Detrick, R.S., Canales, P.J., Kent, G. M., Tischer, M., Diebold, J., J. Babcock, Frozen subcrustal magma lenses, Nature 436, 1149-1152, 2005.

Canales, J. P, Robert S. Detrick, S. M. Carbotte, Graham M. Kent, John B. Diebold, Alistair Harding, Jeffrey Babcock, Mladen Nedimovic, and Emily van Ark Upper Crustal Structure and Axial Topography at Intermediate-Spreading Ridges: Seismic Constraints from the Southern Juan de Fuca Ridge, J. Geophys. Res., 110, B12104, doi:10.1029/2005JB003630, 2005.

KEYWORDS

mid-ocean ridges multi-channel seismic data magma chambers axial seamount layer 2a juan de fuca ridge undersea volcanos

THEMES

Earth fundamentals