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TitaniQ: a titanium-in-quartz geothermometer

Abstract

Titanium is one of many trace elements to substitute for silicon in the mineral quartz. Here, we describe the temperature dependence of that substitution, in the form of a new geothermometer. To calibrate the “TitaniQ” thermometer, we synthesized quartz in the presence of rutile and either aqueous fluid or hydrous silicate melt, at temperatures ranging from 600 to 1,000°C, at 1.0 GPa. The Ti contents of quartz (in ppm by weight) from 13 experiments increase exponentially with reciprocal T as described by:

$$ {\text{Log}}{\left( {X^{{{\text{qtz}}}}_{{{\text{Ti}}}} } \right)} = (5.69 \pm 0.02) - \frac{{(3765 \pm 24)}} {{T(K)}}. $$

Application of this thermometer is straightforward, typically requiring analysis of only one phase (quartz). This can be accomplished either by EPMA for crystallization temperatures above 600°C, or by SIMS for temperatures down to at least 400°. Resulting temperature estimates are very precise (usually better than ±5°C), potentially allowing detailed characterization of thermal histories within individual quartz grains. Although calibrated for quartz crystallized in the presence of rutile, the thermometer can also be applied to rutile-absent systems if TiO2 activity is constrained.

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References

  • Bastin GF, Loo FJJ, Vosters PJC, Vrolijk JWGA (1984) An iterative procedure for the correction of secondary fluorescence effects in electron-probe microanalysis near phase boundaries. Spectrochimica Acta 39B:1517–1522

    Google Scholar 

  • Cherniak DJ, Wark DA, Watson EB (2004) Ti diffusion in quartz: preliminary findings. American Geophysical Union, Spring Meeting (in press)

  • Cherniak DJ, Watson EB, Wark DA (2007) Ti diffusion in quartz. Chem Geol (in press)

  • Ellis DJ (1980) Osumilite-sapphirine-quartz granulites from Enderby Land, Antarctica: P–T conditions of metamorphism, implications for garnet-cordierite equilibria and the evolution of the deep crust. Contrib Mineral Petrol 74:201–210

    Article  Google Scholar 

  • Flem B, Larsen RB, Grimstvedt A, Mansfeld J (2002) In situ analysis of trace elements in quartz by using laser ablation inductively coupled plasma mass spectrometry. Chem Geol 182:237–247

    Article  Google Scholar 

  • Ghent ED, Stout MZ (1984) TiO2 activity in metamorphosed pelitic and basic rocks; principles and applications to metamorphism in southeastern Canadian Cordillera. Contrib Mineral Petrol 86:248–255

    Article  Google Scholar 

  • Goetze J, Ploetze M, Graupner T, Hallbauer DK, Bray CJ (2004) Trace element incorporation into quartz; a combined study by ICP-MS, electron spin resonance, cathodoluminescence, capillary ion analysis, and gas chromatography. Geochim Cosmochim Acta 68:3741–3759

    Article  Google Scholar 

  • Goetze J, Ploetze M, Trautmann T (2005) Structure and luminescence characteristics of quartz from pegmatites. Am Mineral 90:13–21

    Article  Google Scholar 

  • Grew ES (1980) Sapphirine + quartz association from Archaean rocks in Enderby Land, Antarctica. Am Mineral 65:821–836

    Google Scholar 

  • Harley SL (1987) Pyroxene-bearing granulites from Tonagh Island, Enderby Land, Antarctica: further evidence for very high temperature (>950°C) Archaean regional metamorphism in the Napier Complex. J Metamorp Geol 5:241–356

    Google Scholar 

  • Harley SL, Motoyoshi Y (2000) Al zoning in orthopyroxene in a sapphirine quartzite: evidence for >1120°C UHT metamorphism in the Napier Complex, Antarctica, and implications for the entropy of sapphirine. Contrib Mineral Petrol 138:293–307

    Article  Google Scholar 

  • Hayden LA, Watson EB, Wark DA (2005) Rutile saturation and TiO2 diffusion in hydrous siliceous melts. American Geophysical Union, Fall Meeting 2005

  • Hayden LA, Watson EB, Wark DA (2006) A Thermobarometer for Sphene. 2006 Goldschmidt conference abstract

  • Landtwing MR, Pettke T (2005) Relationships between SEM-cathodoluminescence response and trace-element composition of hydrothermal vein quartz. Am Mineral 9:122–131

    Article  Google Scholar 

  • Mueller A, Wiedenbeck M, van den Kerkhof AM, Kronz A, Simon K (2003) Trace elements in quartz; a combined electron microprobe, secondary ion mass spectrometry, laser-ablation ICP-MS, and cathodoluminescence study. Euro J Mineral 15:747–763

    Article  Google Scholar 

  • Peppard BT, Steele IM, Davis AM, Wallace PJ, Anderson AT (2001) Zoned quartz phenocrysts from the rhyolitic Bishop Tuff. Am Mineral 86:1034–1052

    Google Scholar 

  • Rusk BG, Reed MH (2002) Scanning electron microscope-cathodoluminescence analysis of quartz reveals complex growth histories in veins from the Butte porphyry copper deposit, Montana. Geology 30:727–730

    Article  Google Scholar 

  • Rusk BG, Reed MH, Dilles JH, Klemm L, Heinrich C (2004) Compositions of magmatic hydrothermal fluids determined by LA-ICP-MS of fluid inclusions from the porphyry copper–molybdenum deposit at Butte, Montana. Chem Geol 210:173–199

    Article  Google Scholar 

  • Rusk BG, Reed MH, Dilles JH, Kent AJR (2006) Intensity of quartz cathodoluminescence and trace element content in quartz from the porphyry copper deposit in Butte, Montana, USA. Am Mineral (in press)

  • Ryerson FJ, Watson EB (1987) Rutile saturation in magmas: implications for Ti-Nb-Ta depletion in island-arc basalts. Earth Planet Sci Lett 86:225–239

    Article  Google Scholar 

  • Spear FS, Kohn MJ, Cheney JT, Florence F (2002) Metamorphic, thermal, and tectonic evolution of central New England. J Petrol 43:2097–2120

    Article  Google Scholar 

  • Wark DA, Spear FS (2005) Titanium in quartz: cathodoluminescence and thermometry. Geochim Cosmochim Acta Suppl 69:A592

    Google Scholar 

  • Wark DA, Watson EB (2004) The TitaniQ: a Ti-in-quartz thermometer. Geochim Cosmochim Acta Suppl 68:A543

    Google Scholar 

  • Wark DA, Hildreth W, Spear FS, Cherniak DJ, Watson EB (2007) Pre-eruption recharge of the Bishop magma chamber. Geology (in press)

  • Watson EB, Wark DA, Thomas JB (2006) Crystallization thermometers for zircon and rutile, Contrib Mineral Petrol 151:413–433

    Article  Google Scholar 

  • Watt GR, Wright P, Galloway S, McLean C (1997) Cathodoluminescence and trace element zoning in quartz phenocrysts and xenocrysts. Geochim Cosmochim Acta 61:4337–4348

    Article  Google Scholar 

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Acknowledgments

We are grateful to several persons for assistance at various stages of this project. Frank Spear is thanked for insightful discussions of Ti behavior in metamorphic rocks, for addressing the issue of Ti activity in rutile-undersaturated magmas, and for providing natural samples for analysis. Jay Thomas, Joe Pyle, and Leslie Hayden each participated in trips to Woods Hole Oceanographic Institute for ion microprobe sessions. There, Graham Layne and Nobu Shimuzu each provided valuable assistance. For samples—only some of which are mentioned in this paper—we acknowledge Jay Ague, Fred Anderson, Eric Christiansen, John Farver, Wes Hildreth, Marian Lupulesku, and Mark Reed. Mark Schmitz and an anonymous reviewer provided useful comments. This work was supported by the U.S. National Science Foundation, awards EAR−0409622 and EAR-440228.

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Correspondence to David A. Wark.

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Communicated by T.L. Grove.

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Wark, D.A., Watson, E.B. TitaniQ: a titanium-in-quartz geothermometer. Contrib Mineral Petrol 152, 743–754 (2006). https://doi.org/10.1007/s00410-006-0132-1

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  • DOI: https://doi.org/10.1007/s00410-006-0132-1

Keywords

  • TiO2
  • Rutile
  • Ilmenite
  • Quartz Phenocryst
  • Woods Hole Oceanographic Institute