Crustal structure of the Reykjanes Ridge near 62°N, on the basis of seismic refraction and gravity data

Journal of Geodynamics

Volumn 43, Issue 1, 2007, Pages 55-72

  Jacoby, Wolfgang R ^a   Weigel, Wilfred ^b   Fedorova, Tanya ^a  

^a JOHANNES GUTENBERG UNIVERSITY   (Germany)

^b NONE   (Germany)

Author keywords

Crust mantle; Gravity inversion; Iceland; North Atlantic; Reykjanes Ridge; Seismic refraction

Indexed keywords

CRUSTAL STRUCTURE; GRAVITY; MANTLE STRUCTURE; MODELING; P-WAVE; RAY TRACING; SEISMIC DATA; SEISMIC REFRACTION; WAVE VELOCITY;

ATLANTIC OCEAN; REYKJANES RIDGE;

EID: 33845979109     PISSN: 02643707     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.jog.2006.10.002     Document Type: Article

References (34)

1. Angenheister G., Gebrande H., Miller H., Weigel W., Goldflam P., Jacoby W., Pálmason G.G., Björnsson S., Einarsson P., Zverev S., Loncarecic B., and Solomon S. First results from the Reykjanes Ridge Iceland Seismic Project 1977. Nature 279 (1979) 56-60
2. Angenheister G., Gebrande H., Miller H., Goldflam P., Weigel W., Jacoby W.R., Pálmason G., Björnsson S., Einarsson P., Pavlenkova N.I., Zverev S., Litvinenko I.V., Loncarecic B., and Solomon S. Reykjanes Ridge Iceland Seismic Experiment (RRISP 77). J. Geophys. 47 (1980) 228-238
3. Appelgate B., and Shor A. The northern Mid-Atlantic and Reykjanes Ridges: spreading center morphology between 55°50′N and 63°00′N. J. Geophys. Res. 99 (1994) 17935-17956
4. Birch F. The velocity of compressional waves in rocks to 10 kbar, 1. J. Geophys. Res. 65 (1960) 1083-1102
5. Birch F. The velocity of compressional waves in rocks to 10 kbar, 2. J. Geophys. Res. 66 (1961) 2199-2224
6. Björnsson A. Dynamics of crustal rifting in NE Iceland. J. Geophys. Res. 90 (1985) 10151-10161
7. Björnsson A., Eysteinsson H., and Beblo M. Crustal formation and magma genesis beneath Iceland: magnetotelluric constraints. Geol. Soc. Am. Spec. Pap. 338 (2005) 665-686
8. Bunch A.W.H. Crustal development of the Reykjanes Ridge from seismic refraction. J. Geophys. 47 (1980) 261-264
9. Carlson R.L., and Herrick C.N. Densities and porosities in the oceanic crust and their variations with depth and age. J. Geophys. Res. 95 (1990) 9153-9170
10. Cerveny V., Klimes L., and Psencik I. Paraxial ray approximation in the computation of seismic wavefields in inhomogeneous media. Geophys. J. R. Astr. Soc. 79 (1984) 89-104
11. Darbyshire F.A., White R.S., and Priestley K.F. Structure of the crust and uppermost mantle of Iceland from a combined seismic and gravity study. Earth Planet. Sci. Lett. 181 (2000) 409-428
12. Einarsson P. Travel times recorded at Icelandic seismograph stations during the Reykjanes Ridge Iceland Seismic Project (RRISP). Publ. Sci. Inst. Univ. Iceland (1979) RH-79-10
13. Eysteinsson H., and Gunnarsson K. Maps of gravity, bathymetry and magnetics for Iceland and surroundings. Orkustofnun (1995) OS-95055/JND-07
14. Fedorova T., Jacoby W.R., and Wallner H. Crust-mantle transition and Moho model for Iceland and surroundings from seismic, topography, and gravity data. Tectonophysics 396 (2005) 119-140
15. Flóvenz O.G. Seismic structure of the Icelandic crust above layer three and the relation between body wave velocity and the alteration of the basaltic crust. J. Geophys. 47 (1980) 211-220
16. Gebrande H., Miller H., and Einarsson P. Seismic structure along RRISP-profile I. J. Geophys. 47 (1980) 239-249
17. Goldflam P., Weigel W., and Loncarevic B.D. Seismic structure along RRISP-profile I on the southeast flank of the Reykjanes Ridge. J. Geophys. 47 (1980) 250-260
18. Grevemeyer I., and Weigel W. Seismic velocities of the uppermost igneous crust versus age. Geophys. J. Int. 124 (1996) 631-635
19. Jacoby W.R. Morphology of the Reykjanes Ridge crest near 62°N. J. Geophys. 47 (1980) 81-85
20. Kaban M., Flovenz O., and Pálmason G. Nature of the crust-mantle transition zone and the thermal state of the upper mantle under Iceland from gravity modelling. Geophys. J. Int. 149 (2002) 281-299
21. Kodaira S., Mjelde R., Gunnarsson K., Shiobara H., and Shimamura H. Crustal structure of the Kolbeinsey Ridge, North Atlantic, obtained by use of ocean bottom seismographs. J. Geophys. Res. 102 (1997) 3131-3151
22. Peirce C., Gardiner A., and Sinha M. Temporal and spatial cyclicity of accretion at slow spreading ridges-evidence from the Reykjanes Ridge. Geophys. J. Int. 163 (2005) 56-71 10.1111/j 1365-246X.2005.02738.x
23. Ritzert M., and Jacoby W.R. On the lithospheric seismic structure of Reykjanes Ridge at 62.5°N. J. Geophys. Res. 90 (1985) 10117-10128
24. Searle R.C., Keeton J.A., Lee S.M., Owens R.B., Mecklenburgh R., Parsons B., and White R.S. The Reykjanes Ridge: structure and tectonics of a hot-spot influenced, slow spreading ridge, from multibeam bathymetry, gravity and magnetic investigations. Earth Planet. Sci. Lett. 160 (1998) 463-478
25. Sinha M.C., Constable S.C., Peirce C., White A., Heinson G., MacGregor L.M., and Navin D.A. Magmatic processes at slow spreading ridges: implication of the RAMESSES
26. Smallwood J.R., and White R.S. Crustal accretion at the Reykjanes Ridge 61°-62°N. J. Geophys. Res. 103 (1998) 5185-5201
27. Smilde P.L. Verwendung und Bewertung von a priori Information bei potentiell singulären Inversionsproblemen am Beispiel der gravimetrischen Bestimmung von Dichteverteilungen. Deutsche Geodät. Komm. C 490 (1998) (München)
28. Talwani M., Worzel J.L., and Landisman M. Rapid gravity computations for two-dimensional bodies with application to the Mendocino submarine fracture zone. J. Geophys. Res. 64 (1959) 49-59
29. Vogt P.R. The Iceland phenomenon: imprints of a hot spot on the ocean crust, and implications for flow below the plates. In: Kristjansson L. (Ed). Geodynamics of Iceland and the North Atlantic Area (1974) 105-126
30. Vogt P.R., Nishimura C., and Jarvis J. Prospecting for active volcanism. A promising role for long-range aircraft along the mid-oceanic ridge. EOS 71 (1990) 773-774
31. Weigel, W., 1980. Aufbau des Reykjanes Rückens nach refraktionsseismischen Messungen. In: Weigel, W. (Ed.), Reykjanes Rücken, Island, Norwegischer Kontinentalrand. Abschlusskolloquium, Hamburg zur Meteor-Expedition, vol. 45. DFG, Bonn, pp. 53-61.
32. Weir N.R.W., White R.S., Brandsdottir B., Einarsson P., Shimamura H., and Shiobara H. Crustal structure of the northern Reykjanes Ridge and Reykjanes Peninsula, southwest Iceland. J. Geophys. Res. 106 (2001) 6347-6368
33. Zelt C.A., and Smith R.B. Seismic traveltime inversion for 2D crustal velocity structure. Geophys. J. Int. 108 (1992) 16-34
34. Zelt, C.A., 1992. Documentation of "tramp" and related programs. Available at http://zephyr.rice.edu/department/faculty/zelt/rayinv.html.