GLG490/598C:
Subduction Zones
Fall
2003
Professors
Matt Fouch and Simon Peacock
Syllabus
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Week |
Date |
Topic |
Reading |
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INTRODUCTION |
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1 |
08/26/2003 |
Plate tectonics |
Complete WWW course information form |
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08/28/2003 |
General overview and geology of subduction zones |
Stern, R.J., Subduction zones, Rev. Geophys., 40, art. no. 1012, 2002. [PDF] | |
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2 |
09/02/2003 |
Subduction inputs (oceanic lithosphere) |
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09/04/2003 |
Subduction outputs (arc magmatism) |
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3 |
09/09/2003 |
Geophysical overview of subduction zones |
Zhao, D., A. Hasegawa, and H. Kanamori, Deep structure of Japan subduction zone as derived from local, regional, and teleseismic events, J. Geophys. Res., 99, 22,313-22,329, 1994. [PDF] |
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09/11/2003 |
Quiz
#1 |
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4 |
09/16/2003 |
Seismic structure of subduction zones |
Spence, W., Slab pull and the seismotectonics of subducting lithosphere, Rev. Geophys., 25, 55-69, 1987. [PDF] |
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09/18/2003 |
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5 |
09/23/2003 |
Subduction zone dynamics |
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09/25/2003 |
Quiz
#2 |
Burbach, G.V., and C. Frohlich, Intermediate and deep seismicity and lateral structure of subducted lithosphere in the Circum-Pacific region, Rev. Geophys., 24, 833-874, 1986. [PDF] | |
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DISCUSSIONS |
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6 |
09/30/2003 |
Silent slip and deep tremors |
Dragert,
H., K. Wang, and T.S. James, A silent slip event on the deeper Cascadia
subduction interface. Science, 292, 1525-1528, 2001. [PDF] [Perspective] Obara, K., Nonvolcanic deep tremor associated with subduction in Southwest Japan. Science, 296, 1679-1681, 2002. [PDF] [Perspective] Rogers, G., and H. Dragert, Episodic tremor and slip on the Cascadia subduction zone: The chatter of silent slip, Science, 300, 1941-1943, 2003. [PDF] [Perspective] [Enhanced] |
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10/02/2003 |
Intermediate- and deep-focus earthquakes |
Wallace,
T.C., Introduction to the special issue on the great Bolivian earthquake
of 1994, Geophys.
Res. Lett., 22, 2231, 1995. [PDF] Kirby, S.H., E.A. Okal, and E.R. Engdahl, The 9 June 94 Bolivian deep earthquake - an exceptional event in an extraordinary subduction zone, Geophys. Res. Lett., 22, 2233-2236, 1995. [PDF] Silver, P.G., S.L. Beck, T.C. Wallace, C. Meade, S.C. Myers, D.E. James, and R. Kuehnel, Rupture characteristics of the deep Bolivian earthquake of 9 June 1994 and the mechanism of deep-focus earthquakes, Science, 268, 69-73, 1995. [PDF] Tibi, R., D.A. Wiens, and H. Inoue, Remote triggering of deep earthquakes in the 2002 Tonga sequences, Nature, 424, 921-925, 2003. [PDF] [News & Views] |
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7 |
10/07/2003 |
Seismic structure of subduction zones |
Widiyantoro,
S., B.L.N. Kennett, and R.D. van der Hilst, Seismic tomography
with P and S data reveals lateral variations in the rigidity of
deep slabs, Earth Planet. Sci. Lett., 173, 91-100, 1999. [PDF] Zhao, D.P., Y.B. Xu, D.A. Wiens, L. Dorman, J. Hildebrand, and S. Webb, Depth extent of the Lau back-arc spreading center and its relation to subduction processes, Science, 278, 254-257, 1997. [PDF] |
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10/09/2003 |
Roth, E.G., D.A. Wiens, and D.P. Zhao, An empirical relationship between seismic
attenuation and velocity anomalies in the upper mantle, Geophys. Res.
Lett., 27, 601-604, 2000. [PDF] Vidale, J.E., and H.M. Benz, Upper-mantle seismic discontinuities and the thermal structure of subduction zones, Nature, 356, 678-683, 1992. [PDF] Bina, C.R., Patterns of deep seismicity reflect buoyancy stresses due to phase transitions, Geophys. Res. Lett., 24, 3301-3304, 1997. [PDF] |
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8 |
10/14/2003 |
Water in subduction zones · Slab petrology · Mantle wedge hydration |
Schmidt, M.W., and S. Poli, Experimentally based water budgets for dehydrating slabs and consequences for arc magma generation, Earth Planet. Sci. Lett., 163, 361-379, 1998. [PDF] |
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10/16/2003 |
Bostock,
M.G., Hyndman, R.D. & Peacock,
S.M., An inverted continental Moho and serpentinization of
the forearc mantle. Nature, 417, 536-538, 2002. [PDF] [News & Views] |
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9 |
10/21/2003 |
Mantle
flow in subduction zones |
Wiens, D.A., and G.P. Smith, Seismological constraints on structure and flow patterns within the mantle wedge, The Subduction Factory, AGU Monograph, in press, 2003. [PDF] |
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10/23/2003 |
Russo, R.M., and P.G. Silver, Trench-parallel flow beneath the Nazca plate from seismic anisotropy, Science, 263, 1105-1111, 1994. [PDF] Fischer, K.M., Fouch, M.J., Wiens, D.A. & Boettcher, M.S., Anisotropy and flow in Pacific subduction zone back-arcs. Pure and Applied Geophysics, 151, 463-475, 1998. [PDF] Smith, G.P., D.A. Wiens, K.M. Fischer, L.M. Dorman, S.C. Webb, and J.A. Hildebrand, A complex pattern of mantle flow in the Lau backarc, Science, 292, 713-716, 2001. [PDF] |
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10 |
10/28/2003 |
Melting
in subduction zones |
Turner, S., and C. Hawkesworth, Constraints on flux rates and mantle dynamics beneath island arcs from Tonga-Kermadec lava geochemistry, Nature, 389, pp 568-573, 1997. [PDF] |
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10/30/2003 |
Turner, S., P. Evans, and C. Hawkesworth, Ultrafast source-to-surface movement of melt at island arcs from 226Ra-230Th systematics, Science, 292, pp 1363-1366, 2001. [PDF] Hall, P.S., and C. Kincaid, Diapiric flow at subduction zones: A recipe for rapid transport, Science, v. 292, 2472-2475, 2001. [PDF] |
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11 |
11/04/2003 |
Dynamical modeling |
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11/06/2003 |
Kincaid, C. and I.S. Sacks, Thermal and dynamical evolution of the upper mantle in subduction zones, Journal of Geophysical Research, 102(B6), pp. 12295-12315, 1997. [PDF] Conder, J.A., D.A. Wiens, and J. Morris, On the decompression melting structure at volcanic arcs and back-arc spreading centers, Geophysical Research Letters, 29, No. 15, 10.1029/2002GL015390, 2002. [PDF] Billen, M.I., and M. Gurnis, Comparison of dynamic flow models for the Central Aleutian and Tonga-Kermadec subduction zones, Geochemistry, Geophysics, Geosystems, 4, No. 4, 10.1029/2001GC000295, 2003. [PDF] |
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12 |
11/11/2003 |
Subduction initiation |
NO CLASS - Veteran's Day |
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11/13/2003 |
Mueller,
S., and R.J. Phillips, On the initiation of subduction, J. Geophys.
Res., 96, 651-665, 1991. [PDF]
Hall, C.E., M. Gurnis, M. Sdrolias, L.L. Lavier, and R.D. Muller, Catastrophic initiation of subduction following forced convergence across fracture zones, Earth Planet. Sci. Lett., 212, 15-30, 2003. [PDF] |
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CLASS PRESENTATIONS |
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13 |
11/18/2003 |
Class presentations I |
Teresa Lassak, Maurits Thayer, Mandi Thomson |
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11/20/2003 |
Class presentations II |
Kristi Diller, Nick Schmerr, Sean Ford | |
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14 |
11/25/2003 |
Class presentations III |
Karen Anglin, Susan Schultz, Nathan Toke |
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11/27/2003 |
NO CLASS - Thanksgiving |
TV Guide, comics, etc. |
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15 |
12/02/2003 |
Class presentations IV |
Michele Buttram, Chris Crosby |
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12/04/2003 |
Class presentations V |
Jesse Yoburn, Spencer Riley | |
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16 |
12/09/2003 |
NO CLASS - Final project wrap-up |
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12/11/2003 |
Final term projects due |
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