Trace element modeling of aqueous fluid - peridotite interaction in the mantle wedge of subduction zones

Ayers, John C.

doi:10.1007/s004100050431

Cited by 270 publications

(151 citation statements)

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“…The application of laser ablation microprobe-ICP-MS facilitated the collection of partitioning data for a more comprehensive palette of trace elements than was previously available. These data complement recently acquired data for rutile/fluid pairs (Brenan and Watson, 1991;Brenan et al, 1994;1995;Ayers et al, 1997;Adam et al, 1997;Stalder et al, 1998;Ayers, 1998), allowing assessment of the relative importance of melting and dehydration reactions.…”

Section: Introductionsupporting

confidence: 74%

“…This appears to be consistent with the highest D Nb in the lowest temperature experiment amongst the rutile/melt pairs in our present study. However, Ayers et al (1997) and Ayers (1998) note no temperature effect and much higher D Nb of 3000 -3100 for rutile/ fluid in peridotitic systems.…”

Section: Mineral/fluid Partitioning Experimentsmentioning

confidence: 95%

“…Following recent advances in experimental techniques (Ayers et al, 1992;Stalder et al, 1997), a number of experimental studies have presented partitioning data for trace elements between minerals and water-rich fluids, several of these supplying rutile/fluid partition coefficients (Ayers and Watson, 1993;Brenan et al, 1994;Ayers et al, 1997;Stalder et al, 1998;Ayers, 1998). The results for rutile/fluid are generally similar to those for rutile/melt presented here, with D Nb,Ta Ͼ D Zr,Hf Ͼ Ͼ D others , although there appears to be less fractionation between Nb-Ta and Zr-Hf than in the case of rutile/melt partitioning (Fig.…”

Section: Mineral/fluid Partitioning Experimentsmentioning

confidence: 99%

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Rutile/melt partition coefficients for trace elements and an assessment of the influence of rutile on the trace element characteristics of subduction zone magmas

Foley

Barth

Jenner

2000

Geochimica et Cosmochimica Acta

541

175

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Abstract-Fractionation of some or all of the high field strength elements (HFSE) Nb, Ta, Zr, Hf, and Ti relative to other trace elements occurs in igneous rocks from convergent margins and in the average continental crust, and is generally attributed to a process occurring during subduction. The experimental partitioning of an extensive array of trace elements between rutile/melt pairs is presented which enables the effect of rutile during melting in subduction zones to be directly assessed. D Nb and D Ta are in the range 100 -500, D Zr and D Hf are about 5, whereas all other trace elements analyzed have D rutile/melt less than 0.1. Published D patterns for Nb and Ta between rutile and water-rich fluids are similar to those for melt, whereas the values for Zr and Hf are significantly higher. D Nb and D Ta values for clinopyroxene and garnet are much lower than for rutile, and cannot cause the fractionation of HFSE from other elements seen in island arcs. The presence of rutile in the subducted slab residue during dehydration may be essential in the production of the geochemical signatures of arc magmas, whereas that of the continental crust, including higher Zr/Sm, may be produced by melting of eclogite.

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Section: Introductionsupporting

confidence: 74%

Section: Mineral/fluid Partitioning Experimentsmentioning

confidence: 95%

Section: Mineral/fluid Partitioning Experimentsmentioning

confidence: 99%

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Rutile/melt partition coefficients for trace elements and an assessment of the influence of rutile on the trace element characteristics of subduction zone magmas

Foley

Barth

Jenner

2000

Geochimica et Cosmochimica Acta

541

175

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“…Mecanismo largamente aceito na literatura (cf. Ayers, 1998;Brenan et al, 1994) tos da parte superior da crosta (Weaver, 1991) enquanto as anomalias negativas de Nb e Ta relacionam-se à retenção de rutilo por eclogitos da crosta oceânica (Cordery et al, 1997;Takahashi et al, 1998;Ayers, 1998;Rivalenti et al, 1998;Leitch e Davis, 2001). Pequenas quantidades de rutilo (~2%) são sufi cientes para evitar o enriquecimento desses elementos no manto (Brenan et al, 1994).…”

Section: Aspectos Petrogenéticosunclassified

Geocronologia Rb-Sr e Características Geoquímicas dos Diques Máficos da Região de Nova Lacerda e Conquista D’Oeste (MT), Porção Sudoeste do Craton Amazônico

Costa¹,

Girardi

Matos³

et al. 2009

Geol. USP, Sér. cient.

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“…It was suggested that eclogite melting in subduction zones may generate rutile-bearing residues that are residually-enriched in TITAN elements (e.g., . Experimental studies indicate that the TITAN elements are strongly partitioned into rutile during eclogite melting (Green and Pearson, 1986;Ryerson and Watson, 1987;Ayers, 1998;Stalder et al, 1998;Foley et al, 2000;Schmidt et al, 2004;Kessel et al, 2005), thereby generating positive TITAN anomalies in refractory, rutile-bearing slab residues that balance the depletion observed in subduction zone lavas.…”

Section: New Data and Observationsmentioning

confidence: 99%

Dismantling the deep earth : geochemical constraints from hotspot lavas for the origin and lengthscales of mantle heterogeneity

Jackson¹

2008

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AcknowledgementsFirst off, I want to thank my advisor, Stan Hart, for being so generous, with his time, his resources, and his thoughts. Stan sent me to the edges of the earth to collect rocks on islands and by sea ("a happy student is a traveling student"). And the fishing trips didn't end when I got back to the lab. When I went to him for answers, I often just ended up with more questions, we'd dream up a dozen projects, and he'd send me off with more projects and questions (back in my office, I'd realize that the meeting didn't go as I'd planned)! But the questions were more important than the answers: the questions will keep me employed after I graduate! It's only now that I'm realizing that without so much independence to explore (though frightening at times), I may have never understood that I was capable of generating some fun ideas! I can't express my gratitude to Nobu Shimizu and Mark Kurz for their "open door" policy. They are always ready to give me time, sit down, and hash out new ideas. Their offices are idea factories. I don't know how I would have written this thesis without their constant input.My deepest appreciation to J. Collins for sweating it out with me in the field in Samoa, and to the rest of my committee, P. Kelemen, Erik Hauri and Fred Frey for their stimulating input and for traveling so far to attend the general exam, thesis defense, and committee meetings.J. Blusztajn has always been so optimistic and helpful, and has given me so much of his time and advice. J. Curtice and T. Atwood have also given me dollops of help, and without them I could not have accomplished much of the thesis work.I am so thankful for the friendship of my dear friends, S. Hoffmann, D. Stuebe and J. Blythe, Heidi Marcella, Carolyn Walker, Lauge Sokol-Hessner and Hannah Cole. They kept me going when the times were rough, and we shared many of the best times as well.I am also thankful for the friendship and advice that I received from the "old guard" of JP students, who left the WHOI "nest" before me.

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Trace element modeling of aqueous fluid - peridotite interaction in the mantle wedge of subduction zones

Cited by 270 publications

References 42 publications

Rutile/melt partition coefficients for trace elements and an assessment of the influence of rutile on the trace element characteristics of subduction zone magmas

Rutile/melt partition coefficients for trace elements and an assessment of the influence of rutile on the trace element characteristics of subduction zone magmas

Geocronologia Rb-Sr e Características Geoquímicas dos Diques Máficos da Região de Nova Lacerda e Conquista D’Oeste (MT), Porção Sudoeste do Craton Amazônico

Dismantling the deep earth : geochemical constraints from hotspot lavas for the origin and lengthscales of mantle heterogeneity

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