Effect of melt composition on the partitioning of trace elements between titanite and silicate melt

Prowatke, Stefan; Klemme, Stephan

doi:10.1016/j.gca.2004.06.037

Cited by 237 publications

(160 citation statements)

References 69 publications

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“…The number of possible substitutions increases still further if there are vacancies within the structure. Prowatke and Klemme (2005) reviewed titanite data and substitution mechanisms with similar findings and concluded "matters appear to be… complicated." Here, we assume that REE, Na, U and Th dominantly reside on the 7-coordinated Ca-site, and Zr, Hf, Nb, Ta …”

Section: Cation Substitutionsmentioning

confidence: 85%

“…In an environment rich in trace elements, additional substitutions are possible (Zabavnikova, 1957;Hollabaugh, 1980;Green and Pearson, 1986;Cérny et al, 1995;Tiepolo et al, 2002;Prowatke and Klemme, 2005), and numerous exchange reactions may control substitution of REE, HFSE, F, Na, Al and Fe 3+ into titanite. Some possible substitutions, among others, are: We find correlations between cations, and cations with F, suggesting that all these substitutions may operate to some extent.…”

Section: Cation Substitutionsmentioning

confidence: 99%

“…Numerous studies have successfully applied the LSM to mineral-melt partitioning, including experimental investigations of titanite growth from synthetic Ti-rich melts Prowatke and Klemme, 2005). In the lattice strain model (LSM) of Brice (1975) and Blundy and Wood (1994), the partition coefficient D i at equilibrium of a cation with radius r i entering a particular crystal lattice site M is given by…”

Section: Partition Coefficientsmentioning

confidence: 99%

“…Titanite exhibits high values of the partition coefficient D [=(concentration in solid phase)/(concentration in liquid), C s /C l ] for rare earth elements (REE) and high field strength elements (HFSE), and moreover a strong preference for middle REE over light and heavy REE, and for Ta over Nb (Wörner et al, 1983;Wolff, 1984;Green andPearson, 1986, 1987;Tiepolo et al, 2002;Bachmann et al, 2005;Prowatke and Klemme, 2005). Fractionation of titanite during magmatic crystallization-differentiation therefore leaves a distinctive imprint of depletion in middle REE and increasing Nb/Ta in the residual liquid (Wolff, 1984;Wolff and Storey, 1984;Glazner et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Experimental data are available for titanite/melt element partitioning (Green andPearson, 1986, 1987;Tiepolo et al, 2002;Prowatke and Klemme, 2005), but in all of these studies, non-natural compositions were employed to ensure measurable amounts of REE and HFSE (Green andPearson, 1986, 1987) or crystallization of copious amounts of titanite Prowatke and Klemme, 2005). There is a shortfall of detailed information on titanitemelt partitioning of lithophile elements from natural samples, in particular from silica-undersaturated compositions.…”

Section: Introductionmentioning

confidence: 99%

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Partitioning of rare earth and high field strength elements between titanite and phonolitic liquid

Olin

Wolff

2012

Lithos

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We present the results of a LA-ICPMS study of titanites and associated glasses from the mixed-magma phonolitic Fasnia Member of the Diego Hernández Formation, Tenerife, Canary Islands. We employ a method of identifying equilibrium mineral-melt pairs from natural samples using REE contents and a linear form of the lattice strain model equation (Blundy and Wood, 1994), where the Young's modulus (E M ) for the 7-fold coordinated site is an output variable. For felsic magmas that contain crystals potentially derived from a variety of environments within the system, this approach is more rigorous than the use of solely textural criteria such as mineral-glass proximity.We then estimate titanite/melt partition coefficients for Y, Zr, Nb, REE, Hf, Ta, U and Th. In common with prior studies, we find that middle REE partition more strongly into titanite than either light or heavy REE, and that REE partitioning behavior in titanite is reasonably predicted by the lattice strain model. Titanite also fractionates Y from Ho, Zr from Hf, and Nb from Ta. Comparison with experimental data indicates that melt structure effects on partitioning are significant, most particularly in very highly polymerized melts. We use the data to estimate 7-fold coordination radii for trivalent Pr, Nd, Ho, Tm and Lu, and to make approximate predictions of titanite/melt partitioning of Ra, Ac and Pa. Interpolation of data for heavy REE does not predict the behavior of Y, indicating that factors other than charge and radius are involved in partitioning. Variations in Y/Ho induced by magmatic processes appear to be negatively correlated with temperature, and are expected to be greatest in near-minimum melts.

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Section: Cation Substitutionsmentioning

confidence: 85%

Section: Cation Substitutionsmentioning

confidence: 99%

Section: Partition Coefficientsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Partitioning of rare earth and high field strength elements between titanite and phonolitic liquid

Olin

Wolff

2012

Lithos

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Tracing an Early Jurassic magmatic arc from South to East China Seas

Zhang

et al. 2017

Tectonics

115

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Drilling has revealed suites of magnesian granite and diorite emplaced in Early Jurassic time (198–195 Ma) and an arc‐related low‐temperature (678 to 696°C) magmatism in NE South China Sea. These rocks have 87Sr/86Sri (0.705494 to 0.706623) and εNdt (−0.9 to +2.2) as evidence of evolved mantle‐derived magmas, coupled with enriched fluid‐mobile elements Cs to K and Pb implying involvement of subduction‐zone fluids. Another Early Jurassic granodiorite (zircon U‐Pb 187 Ma) drilled from the SW East China Sea, a magnesian high‐K calc alkaline, is comparably confined to a range of low‐temperature (~675°C) arc‐related granite, characterized by enrichment of fluid‐mobile elements and Nb‐Ta depletion. Its Sr‐Nd isotopes (87Sr/86Sri = 0.705200, εNdt = 1.1) suggest a product of evolved mantle‐derived melts. Together with detrital igneous zircons from Paleocene sequences, these observations reveal an Early Jurassic arc‐related low‐temperature (600 to 740°C) magmatism in the SW East China Sea. These arc‐related granitoids, along with those from SE Taiwan, could define an Early Jurassic NE‐SW trending Dongsha‐Talun‐Yandang magmatic arc zone along the East Asian continental margin paired with Jurassic accretionary complexes from SW Japan, East Taiwan to the West Philippines. This arc‐subduction complex assembly was associated with oblique subduction of the paleo‐Pacific slab beneath Eurasia, presumably responsible for Early Jurassic lithospheric extension in south China block.

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U–Th–Pb geochronology and thermochronology

2017

Geochronology and Thermochronology

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Effect of melt composition on the partitioning of trace elements between titanite and silicate melt

Cited by 237 publications

References 69 publications

Partitioning of rare earth and high field strength elements between titanite and phonolitic liquid

Partitioning of rare earth and high field strength elements between titanite and phonolitic liquid

Tracing an Early Jurassic magmatic arc from South to East China Seas

U–Th–Pb geochronology and thermochronology

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