Formation of volcanic rifted margins: Are temperature anomalies required?

Geophysical Research Letters

Volumn 29, Issue 21, 2002, Pages 18-1-18-4

  Nielsen, Thomas K ^a   Hopper, John R ^a  

^a DANISH LITHOSPHERE CENTRE   (Denmark)

Author keywords

[No Author keywords available]

Indexed keywords

FEEDBACK CONTROL; FLUID DYNAMICS; MATHEMATICAL MODELS; MELTING; VOLCANOES;

VOLCANIC RIFTED MARGINS;

GEOPHYSICS;

MANTLE CONVECTION; MELTING; PLATE BOUNDARY; RIFTING; TEMPERATURE ANOMALY; VISCOSITY; VOLCANISM;

EID: 0036871241     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/2002GL015681     Document Type: Article

References (20)

1. Anderson, D. L., The thermal state of the upper mantle: No role for mantle plumes, Geophys. Res. Lett., 27, 3623-3626, 2000.
2. Boutilier, R. R, and C. E. Keen, Small-scale convection and divergent plate boundaries, J. Geophys. Res., 104, 7389-7403, 1999.
3. Bown, J. W., and R. S. White, Effect of finite extension rate on melt generation at rifted continental margins, J. Geophys. Res., 100, 18,011-18,029, 1995.
4. Braun, M. G., G. Hirth, and E. M. Parmentier, The effects of deep damp melting on mantle flow and melt generation beneath mid-ocean ridges, Earth. Planet. Sci. Lett., 176, 339-356, 2000.
5. Ghods, A., Is small scale convection responsible for the formation of thick igneous crust along volcanic passive margins?, Geophys. Res. Lett., 29, 10.1029/2001GL014408, 2002.
6. Hirth, G., and D. L. Kohlstedt, Water in the oceanic upper mantle: Implications for rheology, melt extraction and the evolution of the lithosphere, Earth. Planet. Sci. Lett., 144, 93-108, 1996.
7. Hopper, J. R., T. Dahl-Jensen, W. S. Holbrook, H. C. Larsen, D. L. Lizarralde, J. Korenaga, G. M. Kent, and P. V. Kelemen, Structure of the SE Greenland margin from seismic reflection and refraction data: Implications for nascent spreading center subsidence and asymmetric crustal accreation during N Atlantic opening, J. Geophys. Res., in press.
8. Ito, G., J. Lin, and C. W. Gable, Dynamics of mantle flow and melting at a ridge-centered hotspot: Iceland and the Mid-Atlantic Ridge, Earth Planet. Sci. Lett., 144, 53-74, 1996.
9. Karato, S., and P. Wu, Rheology of the upper mantle: A synthesis, Science, 260, 771-778, 1993.
10. Keen, C. E., and R. R. Boutilier, Interaction of rifting and hot horizontal plume sheets at volcanic rifted margins, J. Geophys. Res., 105, 13, 375-13, 387, 2000.
11. King, S. D., and D. L. Anderson, Edge-driven convection, Earth. Planet, Sci. Lett., 160, 289-296, 1998.
12. Larsen, H. C., and A. D. Saunders, Tectonism and volcanism at the southeast Greenland rifted margin: A record of plume impact and later continental rupture, in Proc. ODP, Sci. Res., 152, edited by A. D. Saunders et al., pp. 503-533, College Station, TX, 1998.
13. McKenzie, D., and M. J. Bickle, The volume and composition of melt generated by extension of the lithosphere, J. Petrol., 29, 625-679, 1988.
14. Moresi, L., and V. S. Solomatov, Numerical investigations of 2D convection with extremely large viscosity variations, Phys. Fluids., 7, 2154-2162, 1995.
15. Mutter, J. C., W. R. Buck, and C. M. Zchnder, Convective partial melting, 1: A model for the formation of thick basaltic sequences during the initiation of spreading, J. Geophys. Res., 93, 1031-1048, 1988.
16. Nielsen, T. K., H. C. Larsen, and J. R. Hopper, Contrasting rifted margin styles south of Greenland: Implications for mantle plume dynamics, Earth. Planet, Sci. Lett., 200, doi:10.1016/s0012/821X(02)00616/7, 270-285, 2002.
17. Scott, D. R., Small-scale convection and mantle melting beneath mid-ocean ridges, Geophys. Monograph, 71, 327-352, 1992.
18. van Wijak, J. W., R. S. Huismans, M. ter Voorde, and S. A. P. L. Cloetingh, Melt generation at volcanic rifted margins: No need for a mantle plume?, Geophys. Res. Lett., 28, 3995-3998, 2001.
19. White, R. S., and D. McKenzie, Magmatism at rift zones: The generation of volcanic continental margins and flood basalts, J. Geophys. Res., 94, 7685-7729, 1989.
20. White, R. S., D. McKenzie, and R. K. O'Nions, Oceanic crustal thickness from seismic measurements and rare earth element inversions, J. Geophys. Res., 97, 19,683-19,715, 1992.