Contributions to Mineralogy and Petrology

, Volume 91, Issue 1, pp 24–36 | Cite as

Rare earth element partitioning between clinopyroxene and silicate liquid at moderate to high pressure

  • T. H. Green
  • N. J. Pearson
Article

Abstract

Experimental determination of over seventy sets of clinopyroxene/silicate liquid (glass) partitition coefficients (D) for four rare earth elements (REE — La, Sm, Ho, Lu) in a range of REE-enriched natural rock compositions (basalt, basaltic andesite, andesite and rhyodacite) demonstrate a convex upward pattern, favouring the heavy REE (Ho, Lu) and markedly discriminating against the light REE (La). These patterns are consistent with previously documented clinopyroxene D values reported from natural phenocryst/matrix pairs and from experimental work using either REE-enriched compositions and electron microprobe analytical techniques (as in the present study) or natural or synthetic undoped compositions and mass spectrometric, ion probe or X-ray autoradiographic analytical techniques. However, the large data base in the present study allows evaluation of the effect of compositional and physical parameters on REE partitioning relationships. Considering DHo, it is shown that (1) D increases 6-fold with increasing SiO2 content of the coexisting liquid from ∼ 50 to ∼ 70 wt% SiO2 (2) D increases 4-fold with decreasing temperature from 1,120°C to 900° C (3) D increases 2-fold with increasing pressure from ∼ 2.5 to 20 kb. (4) D increases ∼ 2-fold fO2 increases from approximately that of the MW buffer to the HM buffer (5) D remains unchanged within experimental error as the water content of the melt changes from ∼ 0.3 to ≳ 10% by weight H2O.

The absolute REE content of the clinopyroxene shows no consistent trend with temperature, but decreases slightly with increasing pressure, paralleling an increase in the jadeite component of the pyroxene. Thus the increase in D with increasing pressure is attributed to changes in the silicate liquid structure, which discriminate against accommodation of REE with increasing pressure. The clinopyroxene REE content increases with increasing fO2, and in this case the increase in D with increasing fO2 may be attributed mainly to this change in the clinopyroxene composition. Application of the present results to geochemical modelling allows a more appropriate choice of D values, according to the liquid composition and physical conditions applicable in the modelled system. They may also be used to evaluate cognate or xenocrystic relationships between clinopyroxene megacrysts and their host matrix.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Albarede F, Bottinga Y (1972) Kinetic disequilibrium in trace element partitioning between phenocrysts and host lava. Geochim Cosmochim Acta 36:141–156Google Scholar
  2. Arth JG (1976) Behaviour of trace elements during magmatic processes — a summary of theoretical models and their applications. J Res US Geol Survey 4:41–47Google Scholar
  3. Apted MJ, Boettcher AL (1981) Partitioning of REE between garnet and andesite melt: an autoradiographic study of P-T-x effects. Geochim Cosmochim Acta 45:827–838Google Scholar
  4. Apted MJ, Roy SD (1981) Corrections to the trace element fractionatio equations of Hertogen and Gijbels (1976). Geochim Cosmochim Acta 45:777–778Google Scholar
  5. Cameron KL, Hanson GN (1982) Rare earth element evidence concerning the origin of voluminous mid-Tertiary rhyolitic ignimbrites and related volcanic rocks, Sierra Madre Occidental, Chihuahua, Mexico. Geochim Cosmochim Acta 46:1489–1503Google Scholar
  6. Dostal J, Dupuy C, Carron JP, Le Guen de Kerneizon M, Maury RC (1983) Partition coefficients of trace elements: application to volcanic rocks of St. Vincent, West Indies. Geochim Cosmochim Acta 47:525–533Google Scholar
  7. Dowty E (1977) The importance of adsorption in igneous partitioning of trace elements. Geochim Cosmochim Acta 41:1643–1646Google Scholar
  8. Drake MJ, Holloway JR (1978) “Henry's Law” behaviour of Sm in a natural plagioclase/melt system: importance of experimental procedure. Geochim Cosmochim Acta 42:679–683Google Scholar
  9. Drexler JW, Bornhost TJ, Noble DC (1983) Trace-element sanidine/glass distribution coefficients for peralkaline silicic rocks and their implications to peralkaline petrogenesis. Lithos 16:265–271Google Scholar
  10. Ewart A, Brothers RN, Mateen A (1977) An outline of the geology and geochemistry, and the possible petrogenetic evolution of the volcanic rocks of the Tonga-Kernadec-New Zealand Island arc. J Volcanol Geotherm Res 2:205–250Google Scholar
  11. Frey F, Green DH, Roy SA (1978) Integrated models of basalt petrogenesis: a study of quartz tholeiites to olivine melilitites from south eastern Australia utilizing geochemical and experimental petrological data. J Petrol 19:463–513Google Scholar
  12. Gast, PW (1968) Trace element fractionation and the origin of tholeiite and alkaline magma types. Geochim Cosmochim Acta 32:1957–1986Google Scholar
  13. Gill JB (1981) Orogenic andesites and plate tectonics. Springer Berlin Heidelberg New YorkGoogle Scholar
  14. Green DH (1976) Experimental testing of ‘equilibrium’ partial melting of peridotite under water-saturated, high-pressure conditions. Can Mineral 14:155–168Google Scholar
  15. Green DH, Hibberson W (1970) Experimental duplication of conditions of precipitation of high-pressure phenocrysts in a basaltic magma. Phys Earth Planet Interiors 3:247–254Google Scholar
  16. Green DH, Ringwood AE (1967) The genesis of basalt magmas. Contrib Mineral Petrol 15:103–190Google Scholar
  17. Green TH (1982) Anatexis of mafic crust and high pressure crystallization of andesite. In: Thorpe RS (ed) Orogenic andesites and related rocks. Wiley, pp 465–487Google Scholar
  18. Green TH, Pearson NJ (1983) Effect of pressure on rare earth element partition coefficients in common magmas. Nature 305:414–416Google Scholar
  19. Green TH, Ringwood AE, Major A (1966) Friction effects and pressure calibration in a piston-cylinder apparatus at high pressure and temperature. J Geophys Res 71:3589–3594Google Scholar
  20. Greenland LP (1970) An equation for trace element distribution during magmatic crystallization. Am Mineral 55:455–465Google Scholar
  21. Grutzeck MW, Kridelbaugh SJ, Weill DF (1974) The distribution of Sr and REE between diopside and silicate liquid. Geophys Res Lett 1:273–275Google Scholar
  22. Harrison WJ (1981 a) Partitioning of REE between minerals and coexisting melts during partial melting of a garnet lherzolite. Am Mineral 66:242–259Google Scholar
  23. Harrison WJ (1981b) Partition coefficients for REE between garnet and liquids: implications of non-Henry's Law behaviour for models of basalt origin and evolution. Geochim Cosmochim Acta 45:1529–1544Google Scholar
  24. Hellman PL, Green TH (1979) The role of sphene as an accessory phase in the high-pressure partial melting of hydrous mafic compositions. Earth Planet Sci Lett 42:191–201Google Scholar
  25. Henderson P (1982) Inorganic geochemistry. Pergamon Press Oxford, 353 pGoogle Scholar
  26. Henderson P, Williams CT (1979) Variation in trace element partition (crystal/magma) as a function of crystal growth rate. Phys Chem Earth 11:191–198Google Scholar
  27. Hertogen J, Gijbels R (1976) Calculation of trace element fractionation during partial melting. Geochim Cosmochim Acta 40:313–322Google Scholar
  28. Holloway JR, Burnham CW (1972) Melting relations of basalt with equilibrium water pressure less than total pressure. J Petrol 13:1–29Google Scholar
  29. Irving AJ (1978) A review of experimental studies of crystal/liquid trace element partitioning. Geochim Cosmochim Acta 42:743–770Google Scholar
  30. Irving AJ, Frey FA (1984) Trace element abundances in megacrysts and their host basalts: Constraints on partition coefficients and megacryst genesis. Geochim Cosmochim Acta 48:1201–1221Google Scholar
  31. Kay RW (1980) Volcanic arc magmas: implications of a melting-mixing model for element recycling in the crust-upper mantle system. J Geol 88:497–522Google Scholar
  32. Larsen LM (1979) Distribution of REE and other trace elements between phenocrysts and peralkaline undersaturated magmas, exemplified by rocks from the Gardar igneous province, south Greenland. Lithos 12:303–315Google Scholar
  33. Le Roex AP, Erlank AJ (1982) Quantitative evaluation of fractional crystallization in Bouvet Island lavas. J Volcanol Geotherm Res 13:309–338Google Scholar
  34. Lindstrom DJ (1983) Kinetic effects on trace element partitioning. Geochim Cosmochim Acta 47:617–622Google Scholar
  35. Luhr JF, Carmichael ISE (1980) The Colima Volcanic Complex, Mexico, I Post-caldera andesites from Volcan Colima. Contrib Mineral Petrol 71:343–372Google Scholar
  36. Mahood GA, Hildreth W (1983) Large partition coefficients for trace elements in high-silica rhyolites. Geochim Cosmochim Acta 47:11–30Google Scholar
  37. Mysen BO (1978) Experimental determination of rare earth element partitioning between hydrous silicate melt, amphibole and garnet peridotite minerals at upper mantle pressures and temperatures. Geochim Cosmochim Acta 42:1253–1263Google Scholar
  38. Mysen BO, Virgo D (1980) Trace element partitioning and melt structure: an experimental study at 1 atm pressure. Geochim Cosmochim Acta 44:1917–1930Google Scholar
  39. Mysen BO, Virgo D, Seifert FA (1982) The structure of silicate melts: implications for chemical and physical properties of natural magma. Rev Geophys Space Phys 20:353–384Google Scholar
  40. Nagasawa H, Schnetzler CC (1971) Partitioning of rare earth, alkali and alkaline earth elements between phenocrysts and acidic igneous magma. Geochim Cosmochim Acta 35:953–968Google Scholar
  41. Nicholls IA (1984) Determination of rare-earth element partition coefficients for experimental calcic clinopyroxene-basaltic liquid pairs: interpretation and microprobe analysis of assemblages. Geol Soc Aust Abst 12:406–407Google Scholar
  42. Nicholls IA, Harris KL (1980) Experimental rare earth element partition coefficients for garnet, clinopyroxene and amphibole coexisting with andesite and basaltic liquids. Geochim Cosmochim Acta 44:287–308Google Scholar
  43. Onuma N, Higuchi H, Wakita H, Nagasawa H (1968) Trace element partition between two pyroxenes and the host lava. Earth Planet Sci Lett 5:47–51Google Scholar
  44. Pearce JA (1982) Trace element characteristics of lavas from destructive plate boundaries. In Thorpe RS (ed) Orogenic andesites and related rocks. Wiley pp 525–548Google Scholar
  45. Ray GL, Shimizu N, Hart SR (1983) An ion microprobe study of the partitioning of trace elements between clinopyroxene and liquid in the system diopside-albite-anorthite. Geochim Cosmochim Acta 47:2131–2140Google Scholar
  46. Reid F (1983) Origin of the rhyolitic rocks of the Taupo Volcanic Zone, New Zealand. J Volcanol Geotherm Res 15:315–338Google Scholar
  47. Ryburn RJ, Raheim A, Green DH (1976) Determination of the P, T paths of natural eclogites during metamorphism — record of subduction. A correction to a paper by Raheim and Green (1975). Lithos 9:161–164Google Scholar
  48. Schilling J-G, Sigurdsson H, Kingsley RH (1978) Skagi and Western Neovolcanic Zones in Iceland: 2-Geochemical variations. J Geophys Res 83:3983–4002Google Scholar
  49. Schnetzler CC, Philpotts JA (1968) Partition coefficients of rare-earth elements and barium between igneous matrix material and rock-forming-mineral phenocrysts — I. In: Ahrens LH (ed) Origin and distribution of the elements. Pergamon Press pp 929–938Google Scholar
  50. Schnetzler CC, Philpotts JA (1970) Partition coefficients of rare-earth elements between igneous matrix material and rock-forming mineral phenocrysts — II. Geochim Cosmochim Acta 34:331–340Google Scholar
  51. Shaw DM (1970) Trace element fractionation during anatexis. Geochim Cosmochim Acta 34:237–243Google Scholar
  52. Shimizu H (1980) Experimental study of rare-earth element partitioning in minerals formed at 20 and 30 kb for basaltic systems. Geochem J 14:185–202Google Scholar
  53. Shimizu H, Sangen K, Masuda A (1982) Experimental study on rare-earth element partitioning in olivine and clinopyroxene formed at 10 and 20 kb for basaltic systems. Geochem J 16:107–117Google Scholar
  54. Stolper E (1982) Water in silicate glasses: an infrared spectroscopic study. Contrib Mineral Petrol 81:1–17Google Scholar
  55. Strong DF, Dupuy C (1982) Rare earth elements in the bimodal Mount Peyton batholith: evidence of crustal anatexis by mantle-derived magma. Can J Earth Sci 19:308–315Google Scholar
  56. Tanaka T, Nishizawa O (1975) Partitioning of REE, Ba and Sr between crystal and liquid phases for a natural silicate system at 20 kb pressure. Geochem J 9:161–166Google Scholar
  57. Terakado Y, Masuda A (1983) Kinetic effect on rare-earth element partitioning in the diopside-melt system: an experimental observation. Chem Geol 40:13–23Google Scholar
  58. Wass SY, Rogers NW (1980) Mantle metasomatism — precursor to continental alkaline volcanism. Geochim Cosmochim Acta 44:1811–1823Google Scholar
  59. Watson EB, Green TH (1981) Apatite/liquid partition coefficients for the rare earth elements and strontium. Earth Planet Sci Lett 56:405–421Google Scholar
  60. Wendlandt RF, Huebner JS, Harrison WJ (1982) The redox potential of boron nitride and implications for its use as a crucible material in experimental petrology. Am Mineral 67:170–174Google Scholar
  61. White WM, Schilling J-G (1978) The nature and origin of geochemical variation in the Mid-Atlantic Ridge basalts from the Central North Atlantic. Geochim Cosmochim Acta 42:1501–1516Google Scholar
  62. Zielinski RA, Frey FA (1970) Gough Island: evaluation of a fractional crystallization model. Contrib Mineral Petrol 29:242–254Google Scholar

Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • T. H. Green
    • 1
  • N. J. Pearson
    • 1
  1. 1.School of Earth SciencesMacquarie UniversityNorth Ryde NSWAustralia

Personalised recommendations