Hydrated subducted crust at 100-250 km depth

Earth and Planetary Science Letters

Volumn 176, Issue 3-4, 2000, Pages 323-330

  Abers, Geoffrey A ^a  

^a UNIVERSITY OF KANSAS   (United States)

Author keywords

Metamorphism; Oceanic crust; Subduction; Velocity structure; Wave dispersion

Indexed keywords

DISPERSION; METAMORPHISM; OCEANIC CRUST; SEISMIC VELOCITY; SEISMIC WAVE; SUBDUCTION;

EID: 0034732278     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0012-821X(00)00007-8     Document Type: Article

References (38)

1. Ringwood A.E., Green D.H. An experimental investigation of the gabbro-eclogite transformation and some geophysical implications. Tectonophysics. 3:1966;383-427.
2. Schmidt M.W., Poli S. Experimentally based water budgets for dehydrating slabs and consequences for arc magma generation. Earth Planet. Sci. Lett. 163:1998;361-379.
3. Ahrens T.J., Schubert G. Gabbro-eclogite reaction rate and its geophysical significance. Rev. Geophys. Space Phys. 13:1975;383-400.
4. S.H. Kirby, E.R. Engdahl, R. Denlinger, Intraslab earthquakes and arc volcanism: dual physical expressions of crustal and uppermost mantle metamorphism in subducting slabs, in: G.E. Bebout, D. Scholl, S. Kirby (Eds.), Subduction: Top to Bottom, Geophys. Monogr. 96 (1996) 195-214, AGU, Washington, DC.
5. Pawley A.R., Holloway J.R. Water sources for subduction zone volcanism: new experimental constraints. Science. 260:1993;664-667.
6. Helffrich G.R., Stein S. Study of the structure of the slab-mantle interface using reflected and converted seismic waves. Geophys. J. Int. 115:1993;14-40.
7. Gubbins D., Barnicoat A., Cann J. Seismological constraints on the gabbro-eclogite transition in subducted oceanic crust. Earth Planet. Sci. Lett. 122:1994;89-101.
8. 2O content of oceanic crust, in: G.E. Bebout, D. Scholl, S. Kirby (Eds.), Subduction: Top to Bottom, Geophys. Monogr. 96 (1996) 337-346, AGU, Washington, DC.
9. G. Helffrich, Subducted lithospheric slab velocity structure: Observations and mineralogical inferences, in: G.E. Bebout, D. Scholl, S. Kirby (Eds.), Subduction: Top to Bottom, Geophys. Monogr. 96 (1996) 215-222, AGU, Washington, DC.
10. Gubbins D., Snieder R. Dispersion of P waves in subducted lithosphere: Evidence for an eclogite layer. J. Geophys. Res. 96:1991;6321-6333.
11. Matsuzawa T., Umino N., Hasegawa A., Takagi A. Upper mantle velocity structure estimated from PS-converted wave beneath the north-eastern Japan Arc. Geophys. J. R. Astron. Soc. 86:1986;767-787.
12. Abers G.A., Sarker G. Dispersion of regional body waves at 100-150 km depth beneath Alaska: In situ constraints on metamorphism of subducted crust. Geophys. Res. Lett. 23:1996;1171-1174.
13. Plank T., Langmuir C.H. The chemical composition of subducting sediment and its consequences for the crust and mantle. Chem. Geol. 145:1998;325-394.
14. van der Hilst R.D., Sneider R. High-frequency precursors to P wave arrivals in New Zealand: Implications for slab structure. J. Geophys. Res. 101:1996;8473-8488.
15. Helffrich G., Abers G.A. Slab low-velocity layer in the eastern Aleutian subduction zone. Geophys. J. Int. 130:1997;640-648.
16. Iidaka T., Mizoue M. P-wave velocity structure inside the subducting Pacific plate beneath the Japan region. Phys. Earth Planet. Interact. 66:1991;203-213.
17. Li Y.-G., Vidale J.E. Low-velocity fault-zone guided waves: numerical investigations of trapping efficiency. Bull. Seismol. Soc. Am. 86:1996;371-378.
18. Igel H., Ben-Zion Y., Leary P.C. Simulation of SH- and P-SV-wave propagation in fault zones. Geophys. J. Int. 128:1997;533-546.
19. Wang C.Y., Herrmann R.B. A numerical study of P-, SV-, and SH-wave generation in a plane layered medium. Bull. Seismol. Soc. Am. 70:1980;1015-1036.
20. Hori S., Inoue H., Fukao Y., Ukawa M. Seismic detection of the untransformed 'basaltic' oceanic crust subducting into the mantle. Geophys. J. R. Astron. Soc. 83:1985;169-197.
21. Meade C., Jeanloz R. Deep-focus earthquakes and recycling of water into the Earth's mantle. Science. 252:1991;68-72.
22. Christensen N.I. Poisson's ratio and crustal seismology. J. Geophys. Res. 101:1996;3139-3156.
23. Tyburczy J.A., Duffy T.S., Ahrens T.J., Lange M.A. Shock wave equation of state of serpentine to 150 GPA: Implications for the occurrence of water in the Earth's lower mantle. J. Geophys. Res. 96:1991;18011-18028.
24. Bina C.R., Helffrich G.R. Calculation of elastic properties from thermodynamic equation of state principles. Annu. Rev. Earth Planet. Sci. 20:1992;527-552.
25. Watson E.B., Lupulescu A. Aqueous fluid connectivity and chemical transport in clinopyroxene-rich rocks. Earth Planet. Sci. Lett. 117:1993;279-294.
26. Mibe K., Fujii T., Yasuda A. Control of the location of the volcanic front in island arcs by aqueous fluid connectivity in the mantle wedge. Nature. 401:1999;259-262.
27. Faul U.H., Toomey D.R., Waff H.S. Intergranular basaltic melt is distributed in thin, elogated inclusions. Geophys. Res. Lett. 21:1994;29-32.
28. Peacock S.M. The importance of blueschist→eclogite dehydration in subducting oceanic crust. Geol. Soc. Am. Bull. 105:1993;684-694.
29. Vidale J.E. Finite-difference calculation of travel times in three dimensions. Geophysics. 55:1990;521-526.
30. Hole J.A., Zelt B.C. 3-D finite-difference reflection travel times. Geophys. J. Int. 121:1995;427-434.
31. Engdahl E.R., van der Hilst R., Buland R. Global teleseismic earthquake relocation with improved travel times and procedures for depth determination. Bull. Seismol. Soc. Am. 88:1998;722-743.
32. Dziewonski A., Bloch S., Landisman M. A technique for the analysis of transient seismic signals. Bull. Seismol. Soc. Am. 59:1969;427-444.
33. Ulmer P., Trommsdorf V. Serpentine stability to mantle depths and subduction-related magmatism. Science. 268:1995;858-861.
34. Watt J.P., Davies G.F., O'Connell R.J. The elastic properties of composite materials. Rev. Geophys. Space Phys. 14:1976;541-563.
35. Mavko G.M. Velocity and attenuation in partially molten rocks. J. Geophys. Res. 85:1980;5173-5189.
36. Schmeling H. Numerical models on the influence of partial melt on elastic, anelastic and electric properties of rocks, Part I: elasticity and anelasticity. Phys. Earth Planet. Interact. 41:1985;34-57.
37. Sato H., Sacks I.S., Murase T., Scarfe C.M. Thermal structure of low velocity zone derived from laboratory and seismic investigations. Geophys. Res. Lett. 15:1988;1227-1230.
38. 2O to 15 GPa. Am. Mineral. 78:1993;271-284.