The spectra of isotopic heterogeneities along the mid-Atlantic Ridge

Earth and Planetary Science Letters

Volumn 238, Issue 1-2, 2005, Pages 96-109

  Agranier, Arnaud ^a   Blichert Toft, Janne ^a   Graham, David ^b   Debaille, Vinciane ^c   Schiano, Pierre ^c   Albarède, Francis ^a  

^a UNIVERSITÉ DE LYON   (France)

^b OREGON STATE UNIVERSITY   (United States)

^c UNIVERSITÉ BLAISE PASCAL   (France)

Author keywords

DUPAL; Hf isotopes; Mantle heterogeneities; Mid Atlantic Ridge; Mixing; MORB; Pb isotopes; Periodograms

Indexed keywords

MANTLE HETEROGENEITIES; MID-ATLANTIC RIDGE; PERIODOGRAMS;

BASALT; CORRELATION METHODS; ISOTOPES; LITHOLOGY; PRINCIPAL COMPONENT ANALYSIS;

GEOCHEMISTRY;

HAFNIUM; ISOTOPIC COMPOSITION; LEAD ISOTOPE; MAGMA CHEMISTRY; MID-OCEAN RIDGE BASALT; MIXING; STEADY FLOW;

ATLANTIC OCEAN; MID-ATLANTIC RIDGE; OCEANIC REGIONS; WORLD;

EID: 26944458865     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.epsl.2005.07.011     Document Type: Article

References (47)

1. E.M. Klein C.H. Langmuir Global correlations of ocean ridge basalt chemistry with axial depth and crustal thickness J. Geophys. Res. 92 1987 8089-8115
2. J.-G. Schilling M. Zajac R. Evans T. Johnston W. White J.D. Devine R. Kingsley Petrologic and geochemical variations along the mid-Atlantic Ridge from 29°N to 73°N Am. J. Sci. 283 1983 510-586
3. U.R. Christensen A.W. Hofmann Segregation of subducted oceanic crust in the convecting mantle J. Geophys. Res. 99 1994 19867-19884
4. D. McKenzie R.K. O'Nions Mantle reservoirs and oceanic island basalts Nature 301 1983 229-231
5. C.J. Allègre D.L. Turcotte Implications of a two-component marble-cake mantle Nature 323 1986 123-127
6. G. Metcalfe C.R. Bina J.M. Ottino Kinematic considerations for mantle mixing Geophys. Res. Lett. 22 1995 743-746
7. B. Hamelin B. Dupré C.J. Allègre Lead-strontium isotopic variations along the East Pacific Rise and the mid-Atlantic Ridge Earth Planet. Sci. Lett. 67 1984 340-350
8. M. Gurnis Quantitative bounds on the size-spectrum of isotopic heterogeneity within the mantle Nature 323 1986 317-320
9. D.W. Graham F.J. Spera Spatial statistics of isotopic variations along mid-ocean ridges J. Conf. Abst. 5 2000 452
10. F. Albarede P. Telouk J. Blichert-Toft M. Boyet A. Agranier B. Nelson Precise and accurate isotopic measurements using multiple-collector ICPMS Geochim. Cosmochim. Acta 68 12 2004 2725-2744
11. J. Blichert-Toft C. Chauvel F. Albarède Separation of Hf and Lu for high-precision isotope analysis of rock samples by magnetic sector-multiple collector ICP-MS Contrib. Mineral. Petrol. 127 1997 248-260
12. J. Blichert-Toft A. Agranier M. Andres R. Kingsley J.-G. Schilling F. Albarède Geochemical segmentation of the mid-Atlantic Ridge North of Iceland and ridge-hotspot interaction in the North Atlantic Geochem. Geophys. Geosyst. 6 2005 doi:10.1029/2004GC000788
13. W.M. White F. Albarède P. Télouk High-precision analysis of Pb isotopic ratios using multi-collector ICP-MS Chem. Geol. 167 2000 257-327
14. J. Douglass J.-G. Schilling D. Fontignie Plume-ridge interactions of the Discovery and Shona mantle plumes with the southern mid-Atlantic Ridge (40°-55°S) J. Geophys. Res. 104 1999 2941-2962
15. L. Dosso B.B. Hanan H. Bougault J.-G. Schilling J.-L. Joron Sr-Nd-Pb geochemical morphology between 10°N and 17°N on the mid-Atlantic Ridge: A new MORB isotope signature Earth Planet. Sci. Lett. 106 1991 29-43
16. M.F. Thirlwall M.A.M. Gee R.N. Taylor B.J. Murton Mantle components in Iceland and adjacent ridges investigated using double-spike Pb isotope ratios Geochim. Cosmochim. Acta 68 2004 361-386
17. B.B. Hanan D.W. Graham Lead and helium isotope evidence from oceanic basalts for a common deep source of mantle plumes Science 272 1996 991-995
18. J.-G. Schilling R.H. Kingsley B.B. Hanan B.L. McCully Nd-Sr-Pb isotopic variations along the Gulf of Aden: Evidence for Afar mantle plume-continental lithosphere interaction J. Geophys. Res. 97 1992 10927-10966
19. R.A. Johnson D.W. Winchern Applied Multivariate Statistical Analysis 1992 Prentice-Hall Englewood Cliff 594 pp.
20. A.W. Hofmann Mantle geochemistry: The message from oceanic volcanism Nature 385 1997 219-229
21. S.E. Church M. Tatsumoto Lead isotope relations in oceanic ridge basalts from the Juan de Fuca-Gorda Ridge area, NE Pacific Ocean Contrib. Mineral. Petrol. 53 1975 253-279
22. S.R. Hart A large-scale isotope anomaly in the Southern Hemisphere mantle Nature 309 1984 753-757
23. A.W. Zindler S.R. Hart Chemical Geodynamics Annu. Rev. Earth Planet. Sci. 14 1986 493-571
24. D.W. Graham Noble gas isotope geochemistry of mid-ocean ridge and ocean island basalts; characterization of mantle source reservoirs in: D. Porcelli R. Wieler C. Ballentine (Eds.) Noble Gases in Geochemistry and Cosmochemistry Rev. Mineral. Geochem. vol. 47 2002 Mineral. Soc. Amer Washington, D.C 247-318
25. N.R. Lomb Least-squares frequency analysis of unequally spaced data Astrophys. Space Sci. 39 1976 447-462
26. J.D. Scargle Studies in astronomical time series analysis: II. Statistical aspects of spectral analysis of unevenly spaced data Astrophys. J. 263 1982 835-853
27. W.H. Press B.P. Flanney S.A. Teukolsky W.T. Vetterling Numerical Recipes: The Art of Scientific Computing 1992 Cambridge University Press Cambridge 818 pp.
28. D.L. Turcotte G. Schubert Geodynamics 2nd ed. 2002 Univ. Press Cambridge 456 pp.
29. J.-G. Schilling R. Kingsley D. Fontignie R. Poreda S. Xue Dispersion of the Jan Mayen and Iceland mantle plumes in the Arctic: A He-Pb-Nd-Sr isotope tracer study of basalts from the Kolbeinsey, Mohns, and Knipovich Ridges J. Geophys. Res. 104 1999 10543-10569
30. P. Olson D.A. Yuen D. Balsiger Mixing of passive heterogeneities by mantle convection J. Geophys. Res. 89 1984 436-525
31. N.R.A. Hoffman D.P. McKenzie The destruction of geochemical heterogeneities by differential fluid motions during mantle convection Geophys. J. R. Astron. Soc. 1985 1985 163-206
32. J.P. Morgan W.J. Morgan Two-stage melting and the geochemical evolution of the mantle: A recipe for mantle plum-pudding Earth Planet. Sci. Lett. 170 1999 215-239
33. D. Bercovici S.I. Karato Whole-mantle convection and the transition-zone water filter Nature 425 2003 39-44
34. C.J. Hawkesworth M.S.M. Mantovani P.N. Taylor Z. Palacz Evidence from the Parana of south Brazil for a continental contribution to Dupal basalts Nature 322 1986 356-359
35. I. Vlastelic D. Aslanian L. Dosso H. Bougault J.L. Olivet L. Geli Large-scale chemical and thermal division of the Pacific mantle Nature 399 6734 1999 345-350
36. T.M. Antonsen Z. Fan E. Ott E. Garcia-Lopez The role of chaotic orbits in the determination of power spectra of passive scalars Phys. Fluids 8 1996 3094-3104
37. D.R. Fereday P.H. Haynes Scalar decay in two-dimensional chaotic advection and Batchelor-regime turbulence Phys. Fluids 16 2004 4359-4370
38. T.M. Antonsen E. Ott Multifractal power spectra of passive scalars convected by chaotic fluid flows Phys. Rev., A 44 1991 851-857
39. C.J. Allègre E. Lewin Isotopic systems and stirring times of the earth's mantle Earth Planet. Sci. Lett. 136 1995 629-646
40. B. Dupré C.J. Allègre Pb-Sr isotope variation in Indian Ocean basalts and mixing phenomena Nature 303 1983 142-146
41. M. Andres J. Blichert-Toft J.-G. Schilling Nature of the depleted upper mantle beneath the Atlantic: Evidence from Hf isotopes in normal mid-ocean ridge basalts from 79°N to 55°S Earth Planet. Sci. Lett. 225 2004 89-103
42. S.B. Shirey J.F. Bender C.H. Langmuir Three-component isotopic heterogeneity near the oceanographer transform, mid-Atlantic Ridge Nature 325 1987 217-222
43. D. Helmberger S. Ni L. Wen J. Ritsema Seismic evidence for ultra-velocity zones beneath Africa and eastern Atlantic J. Geophys. Res. 105 2000 23865-23878
44. D. Gasperini J. Blichert-Toft D. Bosch A. Del Moro P. Macera P. Télouk F. Albarède Evidence from Sardinian basalt geochemistry for recycling of plume heads into the Earth's mantle Nature 408 2000 701-704
45. F. Albar̀de R. van der Hilst Zoned mantle convection Philos. Trans. R. Soc., A 360 2002 2569-2592
46. B.B. Hanan J. Blichert-Toft D.G. Pyle D.M. Christie Contrasting origins of the upper mantle MORB source as revealed by Hf and Pb isotopes from the Australian-Antarctic discordance Nature 432 2004 91-94
47. S. Escrig F. Capmas B. Dupre C.J. Allegre Osmium isotopic constraints on the nature of the DUPAL anomaly from Indian mid-ocean-ridge basalts Nature 431 7004 2004 59-63