Morphology of the explorer - Juan de Fuca slab edge in northern Cascadia: Imaging plate capture at a ridge-trench-transform riple junction

Geology

Volumn 36, Issue 11, 2008, Pages 895-898

  Audet, P ^a   Bostock, M G ^a   Mercier, J P ^a   Cassidy, J F ^b  

^a UNIVERSITY OF BRITISH COLUMBIA   (Canada)

^b Geological Survey of Canada Sidney   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

BRITISH COLUMBIA; BROADBAND SEISMIC STATIONS; CRUSTAL LEVELS; GEOLOGICAL DATA; GEORGIA; IMAGING PLATE; MICROPLATES; POLARIS; RELATIVE MOTION; RIDGE SUBDUCTION; SLAB EDGES; SLAB MORPHOLOGY; TECTONIC MODELS; TELESEISMIC; THERMO-MECHANICAL; TOROIDAL FLOW; UPPER MANTLE STRUCTURE;

MORPHOLOGY; STRUCTURAL GEOLOGY; TECTONICS;

PLATES (STRUCTURAL COMPONENTS);

JUAN DE FUCA PLATE; MICROPLATE; PLATE CONVERGENCE; PLATE TECTONICS; SLAB; SUBDUCTION ZONE; TRIPLE JUNCTION;

BRITISH COLUMBIA; CANADA; CASCADIA BASIN; NORTH AMERICA; PACIFIC OCEAN; VANCOUVER ISLAND;

EID: 69649086565     PISSN: 00917613     EISSN: 00917613     Source Type: Journal    
DOI: 10.1130/G25356A.1     Document Type: Article

References (20)

1. Abers G.A., 2005, Seismic low-velocity layer at the top of subducting slabs beneath volcanic arcs: Observations, predictions, and systematics: Physics of the Earth and Planetary Interiors, v. 149, p. 7- 29, doi: 10.1016/j.pepi.2004.10.002.
2. Armstrong R.L., Muller J.E., Harakal J.E., Muehlenbachs K., 1985, The Neogene Alert Bay Volcanic Belt of northern Vancouver Island, Canada: Descending-plate-edge volcanism in the arc-trench gap: Journal of Volcanology and Geothermal Research, v. 26, p. 75- 97, doi: 10.1016/ 0377-0273(85)90047-2.
3. Bostock M.G., VanDecar J.C., 1995, Upper mantle structure of the northern Cascadia subduction zone: Canadian Journal of Earth Sciences, v. 32, p. 1- 12.
4. Bostock M.G., Hyndman R.D., Rondenay S., Peacock S.M., 2002, An inverted continental Moho and serpentinization of the forearc mantle: Nature, v. 417, p. 536- 539, doi: 10.1038/417536a.
5. Braunmiller J., Nábelek J., 2002, Seismotectonics of the Explorer region: Journal of Geophysical Research, v. 107, no. B10 2208, doi: 10.1029/2001JB000220.
6. Cassidy J.F., Ellis R.M., Karavas C., Rogers G.C., 1998, The northern limit of the subducted Juan de Fuca plate system: Journal of Geophysical Research, v. 103, p. 26,949- 26,961, doi: 10.1029/98JB02140.
7. DeMets C., Traylen S., 2000, Motion of the Rivera plate since 10 Ma relative to the Pacific and North American plates and the mantle: Tectonophysics, v. 318, p. 119- 159, doi: 10.1016 /S0040-1951(99)00309-1.
8. Dziak R.P., 2006, Explorer deformation zone: Evidence of a large shear zone and reorganization of the Pacific-Juan de Fuca-North American triple junction: Geology, v. 34, p. 213- 216, doi: 10.1130/G22164.1.
9. Forsyth D., Uyeda S., 1975, On the relative importance of the driving forces of plate motion: Royal Astronomical Society Geophysical Journal, v. 43, p. 163- 200.
10. Govers R., Meijer P.T., 2001, On the dynamics of the Juan de Fuca plate: Earth and Planetary Science Letters, v. 189, p. 115- 131, doi: 10.1016/S0012-821X(01)00360-0.
11. Kreemer C., Govers R., Furlong K.P., Holt W.E., 1998, Plate boundary deformation between the Pacific and North America in the Explorer region: Tectonophysics, v. 293, p. 225- 238, doi: 10.1016/ S0040-1951(98)00089-4.
12. Lewis T.J., Lowe C., Hamilton T.S., 1997, Continental signature of a ridge-trench-triple junction: Northern Vancouver Island: Journal of Geophysical Research, v. 102, p. 7767- 7781.
13. Mazzotti S., Dragert H., Henton J., Schmidt M., Hyndman R., James T., Lu Y., Craymer M., 2003, Current tectonics of northern Cascadia from a decade of GPS measurements: Journal of Geophysical Research, v. 108, no. B12 2554, doi: 10.1029/2003JB002653.
14. Nicholson T., Bostock M.G., Cassidy J.F., 2005, New constraints on subduction zone structure in northern Cascadia: Geophysical Journal International, v. 161, p. 849- 859, doi: 10.1111/ j.1365-246X.2005.02605.x.
15. Rohr K.M.M., Furlong K.P., 1995, Ephemeral plate tectonics at the Queen Charlotte triple junction: Geology, v. 23, p. 1035- 1038, doi: 10.1130/0091-7613(1995)023<1035:EPTATQ>2.3.CO;2.
16. Stock J.M., Lee J., 1994, Do microplates in a subduction zones leave a geological record?: Tectonics, v. 13, p. 1472- 1487, doi: 10.1029/ 94TC01808.
17. ten Brink U.S., Shimizu I., Molzer P.C., 1999, Plate deformation at depth under northern California: Slab gap or stretched slab?: Tectonics, v. 18, p. 1084- 1098, doi: 10.1029/1999TC900050.
18. Thorkelson D., Breisprecher K., 2005, Partial melting of slab window margins: Genesis of adakitic and non-adakitic magmas: Lithos, v. 79, p. 25- 41, doi: 10.1016/j.lithos.2004.04.049.
19. Zhang X., Paulssen H., Lebedev S., Meier T., 2007, Surface wave tomography of the Gulf of California: Geophysical Research Letters, v. 34, L15305, doi: 10.1029/2007GL030631.
20. Zhu L., Kanamori H., 2000, Moho depth variation in southern California from teleseismic receiver functions: Journal of Geophysical Research, v. 105, no. B2 p. 2969- 2980, doi: 10.1029/1999JB900322.