Skip Navigation

This Article
Right arrow Full Text Freely available
Right arrow FREE Full Text (PDF) Freely available
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (67)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by PERTERMANN, M.
Right arrow Articles by HIRSCHMANN, M. M.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Journal of Petrology | Volume 44 | Number 12 | Pages 2173-2201 | 2003
© Oxford University Press 2003; all rights reserved

Anhydrous Partial Melting Experiments on MORB-like Eclogite: Phase Relations, Phase Compositions and Mineral–Melt Partitioning of Major Elements at 2–3 GPa

MAIK PERTERMANN1,2,* and MARC M. HIRSCHMANN2

1 EIDGENÖSSISCHE TECHNISCHE HOCHSCHULE, INSTITUT FÜR MINERALOGIE UND PETROGRAPHIE, ETH-ZENTRUM, CH-8092 ZÜRICH, SWITZERLAND
2 DEPARTMENT OF GEOLOGY AND GEOPHYSICS, UNIVERSITY OF MINNESOTA, 310 PILLSBURY DRIVE SE, MINNEAPOLIS, MN 55455, USA

* Corresponding author. Telephone: +41 1 632 75 92. Fax: +41 1 632 10 88. E-mail: maik.pertermann{at}erdw.ethz.ch

We present melt and mineral compositions from nominally anhydrous partial melting experiments at 2–3 GPa on a quartz eclogite composition (G2) similar to average oceanic crust. Near-solidus partial melts at 3 GPa, determined with melt traps of vitreous carbon spheres, have 55–57 wt % SiO2, rather less silica than the dacitic compositions that are generally assumed for near-solidus eclogite partial melts. At 2 GPa, equivalent near-solidus partial melts are less silicic (<=52 wt % SiO2). The 3 GPa near-solidus partial melts (up to melt fractions of ~3%) are saturated in rutile and have 5·7–6·7 wt % TiO2. The G2 composition is K2O-poor (0·03 wt %), but a modified composition with 0·26 wt % K2O (G2K) produces dacitic near-solidus melts with 61–64 wt % SiO2. Rutile saturation for G2K extends to higher melt fraction (~13%) and occurs at lower TiO2 melt contents (3·3 wt %) than for G2. These results can be understood in terms of a simplified thermodynamic model in which alkalis increase the SiO2 content of liquids saturated in quartz, which in turn diminishes the TiO2 concentrations required to maintain rutile saturation. Additionally, the mode of residual garnet and generation of silicic liquids by partial melting of anhydrous eclogite are linked, as garnet is required to mass-balance formation of appreciable SiO2-rich melt. Partitioning of Na between clinopyroxene and melt shows significant increases with pressure, but only modest shifts with changing temperature. In contrast, partitioning of Ti between cpx and melt, as well as between cpx and garnet, shows pronounced dependence on temperature for compositions relevant to anhydrous partial melting of eclogite. Mixtures between partial melts of eclogite and primitive picritic Hawaiian magmas are similar to magnesian, SiO2-rich compositions inferred from melt inclusions from the Koolau volcano. However, in detail, no eclogitic partial melt has been identified that is capable of explaining all of the compositional features of the exotic Koolau component. Based on phase compositions in our experiments, the calculated density of near-solidus eclogite is 3440 kg/m3, notably less than commonly assumed. Therefore, the excess temperature required for a plume to support a given proportion of eclogite in the upper mantle may be less than previously assumed.

KEY WORDS: eclogite; experimental petrology; mantle melting; partial melt; pyroxenite


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 American MineralogistHome page
X. Xiong, H. Keppler, A. Audetat, G. Gudfinnsson, W. Sun, M. Song, W. Xiao, and L. Yuan
Experimental constraints on rutile saturation during partial melting of metabasalt at the amphibolite to eclogite transition, with applications to TTG genesis
American Mineralogist, August 1, 2009; 94(8-9): 1175 - 1186.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
M. Mazzucchelli, G. Rivalenti, D. Brunelli, A. Zanetti, and E. Boari
Formation of Highly Refractory Dunite by Focused Percolation of Pyroxenite-Derived Melt in the Balmuccia Peridotite Massif (Italy)
J. Petrology, July 1, 2009; 50(7): 1205 - 1233.
[Abstract] [Full Text] [PDF]

Home page
 Geological Society of America BulletinHome page
X.-C. Wang, X.-H. Li, W.-X. Li, Z.-X. Li, Y. Liu, Y.-H. Yang, X.-R. Liang, and X.-L. Tu
The Bikou basalts in the northwestern Yangtze block, South China: Remnants of 820-810 Ma continental flood basalts?
Geological Society of America Bulletin, November 1, 2008; 120(11-12): 1478 - 1492.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
T. B. Thomsen and M. W. Schmidt
The Biotite to Phengite Reaction and Mica-dominated Melting in Fluid + Carbonate-saturated Pelites at High Pressures
J. Petrology, October 29, 2008; (2008) egn051v1.
[Abstract] [Full Text] [PDF]

Home page
 Eur J MineralHome page
E. Rampone and G. Borghini
Melt migration and intrusion in the Erro-Tobbio peridotites (Ligurian Alps, Italy): Insights on magmatic processes in extending lithospheric mantle
European Journal of Mineralogy, August 1, 2008; 20(4): 573 - 585.
[Abstract] [Full Text] [PDF]

Home page
 ScienceHome page
S. Pilet, M. B. Baker, and E. M. Stolper
Metasomatized Lithosphere and the Origin of Alkaline Lavas
Science, May 16, 2008; 320(5878): 916 - 919.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
C. Spandler, G. Yaxley, D. H. Green, and A. Rosenthal
Phase Relations and Melting of Anhydrous K-bearing Eclogite from 1200 to 1600{degrees}C and 3 to 5 GPa
J. Petrology, April 1, 2008; 49(4): 771 - 795.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
D. C. Presnall and G. H. Gudfinnsson
Origin of the Oceanic Lithosphere
J. Petrology, April 1, 2008; 49(4): 615 - 632.
[Abstract] [Full Text] [PDF]

Home page
 ajsHome page
E. Stolper and P. Asimow
Insights into mantle melting from graphical analysis of one-component systems
Am J Sci, October 1, 2007; 307(8): 1051 - 1139.
[Abstract] [Full Text] [PDF]

Home page
 Reviews in Mineralogy and GeochemistryHome page
A. B. Thompson, M. Aerts, and A. C. Hack
Liquid Immiscibility in Silicate Melts and Related Systems
Reviews in Mineralogy and Geochemistry, July 1, 2007; 65(1): 99 - 127.
[Full Text] [PDF]

Home page
 Geological MagazineHome page
M.-L. HOU, Y.-H. JIANG, S.-Y. JIANG, H.-F. LING, and K.-D. ZHAO
Contrasting origins of late Mesozoic adakitic granitoids from the northwestern Jiaodong Peninsula, east China: implications for crustal thickening to delamination
Geological Magazine, July 1, 2007; 144(4): 619 - 631.
[Abstract] [Full Text] [PDF]

Home page
 ScienceHome page
A. V. Sobolev, A. W. Hofmann, D. V. Kuzmin, G. M. Yaxley, N. T. Arndt, S.-L. Chung, L. V. Danyushevsky, T. Elliott, F. A. Frey, M. O. Garcia, et al.
The Amount of Recycled Crust in Sources of Mantle-Derived Melts
Science, April 20, 2007; 316(5823): 412 - 417.
[Abstract] [Full Text] [PDF]

Home page
 Geological Society of America Special PapersHome page
D. L. Anderson
The eclogite engine: Chemical geodynamics as a Galileo thermometer
Geological Society of America Special Papers, January 1, 2007; 430(0): 47 - 64.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
S. Villiger, P. Ulmer, and O. Muntener
Equilibrium and Fractional Crystallization Experiments at 0{middle dot}7 GPa; the Effect of Pressure on Phase Relations and Liquid Compositions of Tholeiitic Magmas
J. Petrology, January 1, 2007; 48(1): 159 - 184.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
A. MONTANINI, R. TRIBUZIO, and R. ANCZKIEWICZ
Exhumation History of a Garnet Pyroxenite-bearing Mantle Section from a Continent-Ocean Transition (Northern Apennine Ophiolites, Italy)
J. Petrology, October 1, 2006; 47(10): 1943 - 1971.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
R. DASGUPTA, M. M. HIRSCHMANN, and K. STALKER
Immiscible Transition from Carbonate-rich to Silicate-rich Melts in the 3 GPa Melting Interval of Eclogite + CO2 and Genesis of Silica-undersaturated Ocean Island Lavas
J. Petrology, April 1, 2006; 47(4): 647 - 671.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
J. TUFF, E. TAKAHASHI, and S. A. GIBSON
Experimental Constraints on the Role of Garnet Pyroxenite in the Genesis of High-Fe Mantle Plume Derived Melts
J. Petrology, October 1, 2005; 46(10): 2023 - 2058.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
T. KOGISO, M. M. HIRSCHMANN, and M. PERTERMANN
High-pressure Partial Melting of Mafic Lithologies in the Mantle
J. Petrology, December 1, 2004; 45(12): 2407 - 2422.
[Abstract] [Full Text] [PDF]

Home page
 ScienceHome page
M. Humayun, L. Qin, and M. D. Norman
Geochemical Evidence for Excess Iron in the Mantle Beneath Hawaii
Science, October 1, 2004; 306(5693): 91 - 94.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
A. ISHIKAWA, S. MARUYAMA, and T. KOMIYA
Layered Lithospheric Mantle Beneath the Ontong Java Plateau: Implications from Xenoliths in Alnoite, Malaita, Solomon Islands
J. Petrology, October 1, 2004; 45(10): 2011 - 2044.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
H. M. WILLIAMS, S. P. TURNER, J. A. PEARCE, S. P. KELLEY, and N. B. W. HARRIS
Nature of the Source Regions for Post-collisional, Potassic Magmatism in Southern and Northern Tibet from Geochemical Variations and Inverse Trace Element Modelling
J. Petrology, March 1, 2004; 45(3): 555 - 607.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.