Partial melting and upwelling rates beneath the Azores from a U-series isotope perspective

Earth and Planetary Science Letters

Volumn 239, Issue 1-2, 2005, Pages 42-56

  Bourdon, Bernard ^a   Turner, Simon P ^b   Ribe, Neil M ^c  

^a INSTITUT DE PHYSIQUE DU GLOBE DE PARIS   (France)

^b MACQUARIE UNIVERSITY   (Australia)

^c CNRS   (France)

Author keywords

Azores; Mantle plume; Partial melting; Ridge; U series; Upwelling

Indexed keywords

AZORES; MANTLE PLUME; PARTIAL MELTING; U-SERIES; UPWELLING RATES;

BASALT; ISOTOPES; MATHEMATICAL MODELS; PROTACTINIUM; RADIUM; SEDIMENTS; THORIUM; URANIUM;

GEOCHEMISTRY;

BASALT; MANTLE PLUME; PARTIAL MELTING; URANIUM SERIES DATING;

EID: 27744481719     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.epsl.2005.08.008     Document Type: Article

References (72)

1. D.E. Loper F.D. Stacey The dynamical and thermal structure of deep mantle plume Phys. Earth Planet Inter. 33 1983 304-317
2. N.N. Sleep Hotspots and mantle plumes: Some phenomenology J. Geophys. Res. 95 1990 6715-6736
3. E. Bonatti Not so hot "hot spots" in the oceanic mantle Science 250 1990 107-111
4. P.D. Asimow C.H. Langmuir The importance of water to oceanic mantle melting regimes Nature 421 2003 815-820
5. M.G. Braun R.A. Sohn Melt migration in plume-ridge systems Earth Planet. Sci. Lett. 213 2003 417-430
6. P.S. Hall C. Kincaid Melting, dehydration and the dynamics of off-axis plume-ridge interaction Geochem. Geophys. Geosyst. 4 2003 GC000567
7. J.E. Dixon L. Leist C.H. Langmuir J.-G. Schilling Recycled dehydrated lithosphere observed in plume-influenced mid-ocean ridge basalt Nature 420 2002 385-389
8. B. Bourdon C.H. Langmuir A. Zindler Ridge-hotspot interaction along the Mid-Atlantic ridge between 37°30 and 40°30 N: The U-Th disequilibrium evidence Earth Planet. Sci. Lett. 142 1996 175-190
9. S. Turner C. Hawkesworth N. Rodgers P. King U-Th disequilibria and ocean island basalt generation in the Azores Chem. Geol. 139 1997 145-164
10. 231Pa disequilibria Geochim. Cosmochim. Acta 63 1999 4119-4138
11. 230Th disequilibria in postglacial volcanic rocks Earth Planet. Sci. Lett. 214 2003 167-186
12. P.R. Vogt W.Y. Jung The Terceira rift as hyper-slow, hotspot-dominated oblique spreading axis: A comparison with other slow-spreading rate plate boundaries Earth Planet. Sci. Lett. 218 2004 77-90
13. 231Pa analysis by thermal ionization mass spectrometry in silicate rocks Chem. Geol. 157 1999 147-151
14. 230Th evidence for multiple dehydration events, rapid melt ascent and the time scales of differentiation beneath the Tonga-Kermadec island arc Earth Planet. Sci. Lett. 179 2000 581-593
15. 10Be and U-series disequilibria on the possible contamination of MORB glasses by sedimentary material Geochem. Geophys. Geosyst. 1 8 2000 doi:10.1029/ 2000GC000047
16. W.M. White J.-G. Schilling The nature and origin of geochemical variation in Mid-Atlantic ridge basalts from the Central North Atlantic Geochim. Cosmochim. Acta 42 1978 1501-1516
17. L. Dosso O. Bonnier C. Bollinger H. Bougault J. Etoubleau C. Langmuir Geochemical structure of the mid-Atlantic ridge between 10° and 41°N Earth Planet. Sci. Lett. 170 1999 269-286
18. B. Schaefer S. Turner I. Parkinson N. Rogers C. Hawkesworth Recycled Archaean oceanic mantle lithosphere in the Azores plume Nature 420 2002 324-327
19. 226Ra fractionation in historical lavas from the Azores: Long-lived source heterogeneity vs. Metasomatism fingerprints Chem. Geol. 176 2001 295-310
20. K.W.W. Sims S.J. Goldstein J. Blichert-Toft M.R. Perfit P. Kelemen D.J. Fornari P. Michael M.T. Murrell S.R. Hart D.J. DePaolo G. Layne L. Ball M. Jull J. Bender Chemical and isotopic constraints on the generation and transport of magma beneath the East Pacific Rise Geochim. Cosmochim. Acta 66 2002 3481-3504
21. J.D. Blundy B.J. Wood Mineral-melt partitioning of Uranium, Thorium and their daughters in: B. Bourdon G.M. Henderson C. Lundstrom S. Turner (Eds.) Uranium Series Geochemistry Rev. Mineral. Geochem. vol. 52 2003 Mineral. Soc. Am. Washington, DC 59-123
22. N. Vigier B. Bourdon J.-L. Joron C.J. Allègre U-Th-Ra disequilibria in Ardoukoba tholeiitic basalts (Asal rift): Time scales of crystallization Earth Planet. Sci. Lett. 174 1999 81-98
23. S. Turner J. Foden R. George P. Evans R. Varne M. Elburg G. Jenner Rates and processes of potassic magma generation beneath Sangeang Api volcano, east Sunda arc, Indonesia J. Petrol. 44 2003 491-515
24. R. George R.S. Turner C.J. Hawkesworth C. Bacon C. Nye P. Stelling S. Dreher Chemical versus temporal controls on the evolution of tholeiitic and calc-alkaline magmas at two volcanoes in the Alaska-Aleutian arc J. Petrol. 45 2004 203-219
25. C. Hawkesworth R. George S. Turner G. Zellmer Time scales of magmatic processes Earth Planet. Sci. Lett. 218 2004 1-16
26. E. Widom H.-U. Schmincke J.B. Gill Processes and time scales in the evolution of a chemically zoned trachyte: Fogo A, Sao Miguel, Azores Contrib. Mineral. Petrol. 111 1992 311-328
27. E. Widom E.J.B. Gill H.-U. Schmincke Syenite nodules as a long-term record of magmatic activity in the Ague de Pao volcano, Sao Miguel, Azores J. Petrol. 34 1993 929-953
28. D.C. Snyder E. Widom A. Pietruszka R.W. Carlson The role of open-system processes in the development of silicic magma chambers: A chemical and isotopic investigation of the Fogo A trachyte deposit, Sao Miguel, Azores J. Petrol. 45 2004 723-738
29. B.P. Bourdon S.P. Turner Upwelling rates beneath hotspots : Evidence from U-Series in basalts from the Mid-Atlantic Ridge and the Azores islands Eos Trans. AGU 82 47 2001 (Fall Meet. Suppl., Abstract T32C-07)
30. M. Moreira R. Doucelance M.D. Kurz B. Dupré C.J. Allègre Helium and lead isotope geochemistry of the Azores Archipelago Earth Planet. Sci. Lett. 169 1999 189-205
31. B. Bourdon J.-L. Joron C. Claude-Ivanaj C.J. Allègre U-Th-Pa-Ra systematics for the Grande Comore volcanics: Melting processes in an upwelling plume Earth Planet. Sci. Lett. 164 1998 119-133
32. L.E. Thomas C.J. Hawkesworth P. Van Calsteren S.P. Turner N.W. Rogers Melt generation beneath ocean islands: A U-Th-Ra isotope study from Lanzarote in the Canary Islands Geochim. Cosmochim. Acta 63 1999 4081-4099
33. B. Bourdon K.W.W. Sims U-series constraints on intraplate basaltic volcanism in: B. Bourdon G.M. Henderson C. Lundstrom S. Turner (Eds.) Uranium series geochemistry Rev. Mineral. Geochem. vol. 52 2003 Mineral. Soc. Am. Washington, DC 215-254
34. P. Beattie Uranium-thorium disequilibria and partitioning on melting of garnet peridotite Nature 363 1993 63-65
35. D. Landwehr J. Blundy E. Chamorro-Perez E. Hill B. Wood U-series disequilibria generated by partial melting of spinel lherzolite Earth Planet. Sci. Lett. 188 2001 329-348
36. P.D. Asimow J.E. Dixon C.H. Langmuir A hydrous melting and fractionation model for mid-ocean ridge basalts: Application to the Mid-Atlantic Ridge near the Azores Geochem. Geophys. Geosyst. 5 2004 doi:10.1029/ 2003GC000568
37. T. Kogiso M.M. Hirschmann Experimental study of clinopyroxenite partial melting and the origin of ultra-calcic melt inclusions Contrib. Mineral. Petrol. 142 2001 347-360
38. J. Phipps Morgan Thermodynamics of pressure release melting of a veined plum pudding mantle Geochem. Geophys. Geosyst. 2 4 2001 doi:10.1029/ 2000GC000049
39. J.-G. Schilling Azores mantle blob: Rare-earth evidence Earth Planet. Sci. Lett. 25 1975 103-115
40. 86Sr ratios from the Azores and their significance in LIL-element enriched mantle Nature 280 1979 28-31
41. C.C. Lundstrom J. Gill Q. Williams M.R. Perfit Mantle melting and basalt extraction by equilibrium porous flow Science 270 1995 1958-1961
42. O. Sigmarsson S. Carn J.C. Carracedo Systematics of U-series nuclides in primitive lavas from the 1730-36 eruption in Lanzarote, Canary Islands and the implications for the role of garnet pyroxenite during oceanic basalt formation Earth Planet. Sci. Lett. 162 1998 1337-151
43. M.M. Hirschmann P.D. Asimow M.S. Ghiorso E.M. Stolper Calculation of peridotite partial melting form thermodynamic model of minerals and melts III. Controls on isobaric melt production and the effect of water on melt production J. Petrol. 40 1999 831-851
44. M.M. Hirschmann E.M. Stolper A possible role for pyroxenite in the origin of the garnet signature in MORB Contrib. Mineral. Petrol. 124 1996 185-208
45. A. Stracke V.J.M. Salters K.W.W. Sims Assessing the presence of garnet-pyroxenite in the mantle sources of basalts through combined hafnium-neodymium-thorium isotope systematics Geochem. Geophys. Geosyst. 1 1999 (1999GC000013)
46. S. Keshav G.H. Gudfinnsson G. Sen Y. Fei High-pressure melting experiments on garnet clinopyroxenite and the alkalic to tholeiitic transition in ocean-island basalts Earth Planet. Sci. Lett. 223 2004 365-379
47. C. Richardson D. McKenzie Radioactive disequilibria from 2D models of melt generation by plumes and ridges 128 1993 425-437
48. C. Claude-Ivanaj B. Bourdon C.J. Allègre Ra-Th-Sr isotope systematics in Grande Comore Island: A case study of plume-lithosphere interaction Earth Planet. Sci. Lett. 164 1998 99-117
49. M. Mattioli B.G.J. Upton A. Renzulli Sub-volcanic crystallization at Sete Citades Volcano, Sao Miguel, Azores, inferred from mafic and ultramafic plutonic nodules Mineral. Petrol. 60 1997 1-26
50. 230Th disequilibrium in mantle minerals: Implications for melt transport rates in island arcs Earth Planet. Sci. Lett. 215 2003 339-355
51. 238U disequilibrium and the melting processes beneath ridge axes Earth Planet. Sci. Lett. 72 1985 149-157
52. R.W. Williams J.B. Gill Effects of partial melting on the uranium decay series Geochim. Cosmochim. Acta 53 1989 1607-1619
53. 226Ra disequilibria in volcanics: A new insight into melting conditions Earth Planet. Sci. Lett. 126 1994 61-74
54. M. Spiegelman T. Elliott Consequences of melt transport for uranium series disequilibrium in young lavas Earth Planet. Sci. Lett. 118 1993 1-20
55. E. Widom R.W. Carlson J.B. Gill H.-U. Schmincke Th-Sr-Nd-Pb isotope and trace element evidence for the origin of the Saõ Miguel, Azores enriched mantle source Chem. Geol. 140 1997 49-68
56. J.A.C. Robinson B.J. Wood The depth of the garnet/spinel transition in fractionally melting peridotite Earth Planet. Sci. Lett. 164 1998 277-284
57. Y. Niu Y.R. Batiza An empirical method for calculating melt compositions produced beneath mid-ocean ridges: Application for axis and off-axis (seamounts) melting J. Geophys. Res. 96 1991 21,753-21,777
58. R.J. Kinzler T.L. Grove Corrections and further discussion of the primary magmas of mid-ocean ridge basalts, 1 and 2 J. Geophys. Res. 98 1993 22339-22347
59. C.H. Langmuir G.N. Hanson An evaluation of major element heterogeneity in the mantle sources of basalts Philos. Trans. R. Soc. Lond. 297 1980 383-407
60. R.C. Searle Lithospheric structure of the Azores platform from Rayleigh-wave dispersion Geophys. J. R. Astron. Soc. 44 1976 537-546
61. 230Th systematics Science 292 2001 1363-1366
62. V.J.M. Salters J.E. Longhi M. Bizimis Near mantle solidus trace element partitioning at pressures up to 3.4 GPa Geochem. Geophys. Geosyst. 3 7 2002 doi:10.1029/2001GC000148
63. N.M. Ribe U.R. Christensen J. Theissing The dynamics of plume-ridge interaction, 1: Ridge-centered plumes Earth Planet. Sci. Lett. 134 1995 155-168
64. R.S. Detrick H.D. Needham V. Renard Gravity anomalies and crustal thickness variations along the Mid-Atlantic ridge between 33° N and 40° N J. Geophys. Res. 100 1995 3767-3787
65. J. Escartin M. Cannat G. Pouliquen A. Rabain Crustal thickness of V-shaped ridges south of the Azores: Interaction of the Mid-Atlantic Ridge (36°-39° N) and the Azores hot spot J. Geophys. Res. 106 2001 21,719-21,735
66. 230Th disequilibrium Earth Planet. Sci. Lett. 107 1991 25-41
67. 230Th chronology of mid-ocean ridge basalts Earth Planet. Sci. Lett. 115 1993 151-159
68. V.J.M. Salters S.R. Hart The hafnium paradox, and the role of garnet in the MORB source Nature 342 1989 420-422
69. S.-s. Sun W.F. McDonough Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and processes in: A.D. Saunders M.J. Norry (Eds.) Magmatism in Ocean Basins Geol. Soc. Spec. Publ. vol. 42 1989 313-345
70. A.N. Halliday C.-C. Lee S. Tommasini G.R. Davies C.R. Paslick J.F. Fitton D.E. James Incompatible trace elements in OIB and MORB and source enrichment in the sub-oceanic mantle Earth Planet. Sci. Lett. 133 1995 379-395
71. J.D. Blundy J.A.C. Robinson B.J. Wood Heavy REE are compatible in clinopyroxene on the spinel lherzolite solidus Earth Planet. Sci. Lett. 160 1998 493-504
72. N.M. Ribe The dynamics of plume-ridge interaction 2. Off-ridge plumes J. Geophys. Res. 101 1996 16,195-16,204