GEO534 - Tectonics Seminar: Spring 2005
Co-taught with Nathan Green
Meets Tuesday , 5:00-6:00 pm in Bevill 272
Discussions, assigned reading, leader:
24 January - Hot-spot fixivity - John Townes
Paper: Tarduno, J.A., et al., The
Emperor Seamount: southward motion of the Hawaiian hotspot plume in the Earth's
mantle, Science, 301, 2003.
Link to info on matle plumes: http://www.mantleplumes.org
1 February - Non-volcanic rifted margins - Ryan Faerber
Paper: Bowling, J.C. and D.L. Harry, Geodynamic models of continental extension
and the formation of non-volcanic rifted continental margins, in R.C.L.
Wilson, R.B. Whitmarh, B. Taylor, and N. Foritzheim, Non-volcanic rifting
of continental margins: a comparison of evidence from land and sea, Geological
Society, London, special publications, 187, 511-536, 2001.
8 February - Ultramafic oceanic core complexes - Ben Garcia leads
Paper: Blackman, D.K., et al., Geology of the Atlantis
Massif (mid-Atlantic Ridge, 30N): implications for the evolution of an ultramafic
oceanic core complex, Mar. Geophys. Res., 23, 443-469, 2002.
Additional reading: Blackman, D.K., J.R. Caan, B.
Janssen, and D.K. Smith, Origin of extensional core complexes: Evidence from
the Mid-Atlantic Ridge at Atlantis Fracture Zone, J. Geophys. Res., 103
(B9), 21,315-21,333, 1998.
15 February - Slabs and corner flow - Ryan Bailey leads
Paper: Conder, J.A., A case for hot slab
surface temperatures in numerical viscous flow models of subduction zones
with an improved fault zone parameterization, Phys. Earth Planet. Sci.
Lett., doi:10.1016/j.pepi.2004.08.018, 2004.
22 February - Seismic activity related to metamorphism - Nathan Green
Paper: Kirby, S., E.R. Engdahl, and R. Denlinger, Intermediate-depth intraslab
earthquakes and arc volcanism as physical expressions of crustal and uppermost
mantle metamorphism in subducting slabs, in: Subduction top to bottom,
geophysical monograph 96, 1996.
1 March - Flat-slab subduction - Andrew Goodliffe
Paper: Gutscher, M-A, Andean subduction styles
and thier effect on thermal structure and intraplate coupling, J. S. American
Earth Sciences, 15, 3-10, 2002.
See also other papers in the above volume
10 March (Thursday, 3pm) - No formal discussion leader
Paper: Hyndman, R.D., C.A. Currie, and S.P. Mazzotti,
Subduction zone backarcs, mobile belts, and origenic heat, GSA Today,
15, doi 10:1130/1052-5173, 2005
15 March (Tuesday, 2:30pm)- No formal discussion leader
Paper: Strength of the lithosphere: Constraints
imposed by laboratory experiments, J. Geophys. Res, 100 (B9), 17,587-17,602,
1995
22 March - Non-transform offsets - Phillip Dunnavant
Paper: Gracia, E., J.L. Charlou, J. Radford-Knoery,
and L.M. Parson, Non-transform offsets along the Mid-Atlantic Ridge south
of the Azores (38N-34N): ultramafic exposures and hosting of hydrothermal
vents.
5 April - Geology of Venus - John Towns
Papers: Saunders, R.S., R. E. Arvidson, J.W. Head, G.S.
Schaber, E.R. Stofan, S.C. Solomon, An overview of Venus geology, Science,
252, 249-252, 1991.
Solomon, S.C. and J.W. Head, Fundamental issues in the
geology and geophysics of Venus, Science, 252, 252-260, 1991.
12 April - Geology of Venus - Ryan Bailey
Paper: V. L. Hansen, Venus diapirs: thermal or
compositional, GSA Bulletin, 115, 1040-1052, 2003.
17 April - Subduction on Venus - Ryan Faerber
Paper: Sandwell, D.T. and G. Schubert, Eveidence
for retrograde lithospheric subduction on Venus, Science, 257, 766-770,
1992.
25 April - Venus stratigraphy - Ben Garcia
Paper: Basilevsky, A.T. and J.W. Head, Venus: Timing
and rates of geologic activity, Geology, 30 (11), 1015-1018, 2002