Ancient, highly heterogeneous mantle beneath Gakkel ridge, Arctic Ocean

Nature

Volumn 452, Issue 7185, 2008, Pages 311-316

  Liu, Chuan Zhou ^a,b,c   Snow, Jonathan E ^b,d   Hellebrand, Eric ^b,e   Brügmann, Gerhard ^b   Von Der Handt, Anette ^b,e   Büchl, Anette ^b   Hofmann, Albrecht W ^b  

^a INSTITUTE OF GEOLOGY AND GEOPHYSICS   (China)

^b MAX PLANCK INSTITUTE FOR CHEMISTRY   (Germany)

^c UNIVERSITY OF CHINESE ACADEMY OF SCIENCES   (China)

^d UNIVERSITY OF HOUSTON   (United States)

^e UNIVERSITY OF HAWAII   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ISOTOPE; OSMIUM 187; OSMIUM 188; SEA WATER; UNCLASSIFIED DRUG;

ASTHENOSPHERE; HETEROGENEITY; MAGMA; MANTLE CONVECTION; MID-OCEAN RIDGE BASALT; PERIDOTITE; UPWELLING;

ARCTIC; ARTICLE; BASALT; GEOLOGY; LITHOSPHERE; MELTING POINT; PRIORITY JOURNAL; SEA; WATER CONTAMINATION;

ARCTIC OCEAN; EURASIAN BASIN; GAKKEL RIDGE;

EID: 41149128302     PISSN: 00280836     EISSN: 14764687     Source Type: Journal    
DOI: 10.1038/nature06688     Document Type: Article

References (50)

1. Dupré, B. & Allègre, C. J. Pb-Sr isotope variation in Indian Ocean basalts and mixing phenomena. Nature 303, 142-146 (1983).
2. Hart, S. R. A large-scale isotope anomaly in Southern Hemisphere mantle. Nature 309, 753-757 (1984).
3. Zindler, A. & Hart, S. Chemical geodynamics. Annu. Rev. Earth Planet. Sci. 14, 493-571 (1986).
4. Hart, S. R., Hauri, E. H., Oschmann, L. A. & Whitehead, J. A. Mantle plumes and entrainment: isotope evidence. Science 256, 517-520 (1992).
5. Hofmann, A. W. Mantle geochemistry: The message from oceanic volcanism. Nature 385, 219-229 (1997).
6. Graham, D. W. in Noble Gases in Geochemistry and Cosmochemistry. Reviews in Mineralogy and Geochemistry Vol. 47 (eds Porcelli, D., Ballentine, C. J. & Wieler, R.) 247-317 (Geochemical Society and Mineralogical Society of America, Washington DC, 2002).
7. Salters, V. J. M. & Stracke, A. Composition of the depleted mantle. Geochem. Geophys. Geosyst. 5, doi:10.1029/2003GC000597 (2004).
8. Workman, R. K. & Hart, S. R. Major and trace element composition of the depleted MORB mantle (DMM). Earth Planet. Sci. Lett. 231, 53-72 (2005).
9. Andres, M., Blichert-Toft, J. & Schilling, J.-G. 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, 89-103 (2004).
10. Graham, D. W. et al. Cryptic striations in the upper mantle revealed by hafnium isotopes in southeast Indian ridge basalts. Nature 440, 199-202 (2006).
11. 187Os systematics of abyssal peridotites. Earth Planet. Sci. Lett. 177, 319-335 (2000).
12. Harvey, J. et al. Ancient melt extraction from the oceanic upper mantle revealed by Re-Os isotopes in abyssal peridotites from the Mid-Atlantic Ridge. Earth Planet. Sci. Lett. 244, 606-621 (2006).
13. Dick, H. J. B., Lin, J. & Schouten, H. An ultraslow-spreading class of ocean ridge. Nature 426, 405-412 (2003).
14. Michael, P. J. et al. Magmatic and amagmatic seafloor generation at the ultraslow-spreading Gakkel ridge, Arctic Ocean. Nature 423, 956-961 (2003).
15. Snow, J., Petrology Group ARK, XX-2. in The Expeditions ARKTIS-XX/1 and XX/2 of the Research Vessel "Polarstern" in 2004 (eds Budéus, G. & Lemke, P.) Rep. Polar Marine Res. 544, 153-208 (2007).
16. Shirey, S. B. & Walker, R. J. The Re-Os isotope system in cosmochemistry and high-temperature geochemistry. Annu. Rev. Earth Planet. Sci. 26, 423-500 (1998).
17. Parkinson, I. J., Hawkesworth, C. J. & Cohen, A. S. Ancient mantle in a modern arc: Osmium isotopes in Izu-Bonin-Mariana forearc peridotites. Science 281, 2011-2013 (1998).
18. Jokat, W. et al. Geophysical evidence for reduced melt production on the Arctic ultraslow Gakkel mid-ocean ridge. Nature 423, 962-965 (2003).
19. Goldstein, S. L. et al. Isotope geochemistry of Gakkel ridge basalts and origin of a 'DUPAL' signature. Ofioliti 31, 234 (2006).
20. Hellebrand, E., Snow, J. E., Dick, H. J. B. & Hofmann, A. W. Coupled major and trace elements as indicators of the extent of melting in mid-ocean-ridge peridotites. Nature 410, 677-681 (2001).
21. Hellebrand, E., Snow, J. E., Hoppe, P. & Hofmann, A. W. Garnet-field melting and late-stage refertilization in 'residual' abyssal peridotites from the Central Indian Ridge. J. Petrol. 43, 2305-2338 (2002).
22. Meisel, T., Walker, R. J. & Morgan, J. W. The osmium isotopic composition of the Earth's primitive upper mantle. Nature 383, 517-520 (1996).
23. Alard, O. et al. In situ Os isotopes in abyssal peridotites bridge the isotopic gap between MORBs and their source mantle. Nature 436, 1005-1008 (2005).
24. Reisberg, L. & Lorand, J. P. Longevity of sub-continental mantle lithosphere from osmium isotope systematics in orogenic peridotite massifs. Nature 376, 159-162 (1995).
25. Snow, J. E. & Schmidt, G. Proterozoic melting in the northern peridotite Massif, Zabargad Island: Os isotopic evidence. Terra Nova 11, 45-50 (1999).
26. Snow, J. E., Schmidt, G. & Rampone, E. Os isotopes and highly siderophile elements (HSE) in the Ligurian ophiolites, Italy. Earth Planet. Sci. Lett. 175, 119-132 (2000).
27. Pearson, D. G. et al. Re-Os isotope systematics and platinum group element fractionation during mantle melt extraction: a study of massif and xenolith peridotite suites. Chem. Geol. 208, 29-59 (2004).
28. Hassler, D. R. & Shimizu, N. Osmium isotopic evidence for ancient subcontinental lithospheric mantle beneath the Kerguelen Islands, southern Indian Ocean. Science 280, 418-421 (1998).
29. Seyler, M., Lorand, J. P., Toplis, M. J. & Godard, G. Asthenospheric metasomatism beneath the mid-ocean ridge: Evidence from depleted abyssal peridotites. Geology 32, 301-304 (2004).
30. Meisel, T., Walker, R. J., Irving, A. J. & Lorand, J. P. Osmium isotopic compositions of mantle xenoliths: A global perspective. Geochim. Cosmochim. Acta 65, 1311-1323 (2001).
31. Snow, J. E. & Reisberg, L. Os isotopic systematics of the MORB mantle: Results from altered abyssal peridotites. Earth Planet. Sci. Lett. 133, 411-421 (1995).
32. Standish, J. J. et al. Abyssal peridotite osmium isotopic compositions from Cr-spinel. Geochem. Geophys. Geosys. 3, doi: 10.1029/2001GC000161 (2002).
33. Escrig, S., Schiano, P., Schilling, J.-G. & Allègre, C. Rhenium-osmium isotope systematics in MORB from the Southern Mid-Atlantic Ridge (40°-50° S). Earth Planet. Sci. Lett. 235, 528-548 (2005).
34. Rehkämper, M. et al. Non-chondritic platinum-group element ratios in oceanic mantle lithosphere; petrogenetic signature of melt percolation? Earth Planet. Sci. Lett. 172, 65-81 (1999).
35. Walker, R. J., Prichard, H. M., Ishiwatari, A. & Pimentel, M. The osmium isotopic composition of convecting upper mantle deduced from ophiolite chromites. Geochim. Cosmochim. Acta 66, 329-345 (2002).
36. Hauri, E. H. Osmium isotopes and mantle convection. Phil. Trans. R. Soc. Lond. 360, 2371-2382 (2002).
37. Morgan, J. P. & Morgan, W. J. Two-stage melting and the geochemical evolution of the mantle: a recipe for mantle plum-pudding. Earth Planet. Sci. Lett. 170, 215-239 (1999).
38. Meibom, A. et al. Re-Os isotopic evidence for long-lived heterogeneity and equilibration processes in the Earth's upper mantle. Nature 419, 705-708 (2002).
39. 186Os systematics of Os-Ir-Ru alloy grains from southwestern Oregon. Earth Planet. Sci. Lett. 230, 211-226 (2005).
40. Frei, R. et al. Os isotope heterogeneity of the upper mantle: Evidence from the Mayari-Baracoa ophiolite belt in eastern Cuba. Earth Planet. Sci. Lett. 241, 466-476 (2006).
41. Pearson, D. G., Parman, S. W. & Nowell, G. M. Alink between large mantle melting events and continent growth seen in osmium isotopes. Nature 449, 202-205 (2007).
42. Davies, G. F. Stirring geochemistry in mantle convection models with stiff plates and slabs. Geochim. Cosmochim. Acta 66, 3125-3142 (2002).
43. Wood, D. A. et al. Elemental and Sr isotope variations in basic lavas from Iceland and the surrounding ocean-floor: Nature of mantle source inhomogeneities. Contrib. Mineral. Petrol. 70, 319-339 (1979).
44. Le Roex, A. P., Dick, H. J. B. & Watkins, R. T. Petrogenesis of anomalous K-enriched MORB from the Southwest Indian Ridge: 11° 53' E to 14° 38' E. Contrib. Mineral. Petrol. 110, 253-268 (1992).
45. Hellebrand, E., Snow, J. E., Mostefaoui, S. & Hoppe, P. Trace element distribution between orthopyroxene and clinopyroxene in peridotites from the Gakkel ridge: a SIMS and NanoSIMS study. Contrib. Mineral. Petrol. 150, 486-504 (2005).
46. Büchl, A. et al. Melt percolation monitored by Os isotopes and HSE abundances: a case study from the mantle section of the Troodos Ophiolite. Earth Planet. Sci. Lett. 204, 385-402 (2002).
47. Anders, E. & Grevesse, N. Abundances of the elements: Meteoritic and solar. Geochim. Cosmochim. Acta 53, 197-214 (1989).
48. Johnson, K. T. M., Dick, H. J. B. & Shimizu, N. Melting in the oceanic upper mantle: an ion microprobe study of diopsides in abyssal peridotites. J. Geophys. Res. 95, 2661-2678 (1990).
49. Brunelli, D. et al. Discontinuous melt extraction and weak refertilization of mantle peridotites at the Vema lithospheric section (Mid-Atlantic ridge). J. Petrol. 47, 745-771 (2006).
50. 186Os ratios of mid-ocean ridge basalts and abyssal peridotites. Geochim. Cosmochim. Acta 58, 5043-5054 (1994).