Zircon saturation model in silicate melts: a review and update
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Zircon stability in silicate melts—which can be quantitatively constrained by laboratory measurements of zircon saturation—is important for understanding the evolution of magma. Although the original zircon saturation model proposed by Watson and Harrison (Earth Planet Sci Lett 64(2):295–304, 1983) is widely cited and has been updated recently, the three main models currently in use may generate large uncertainties due to extrapolation beyond their respective calibrated ranges. This paper reviews and updates zircon saturation models developed with temperature and compositional parameters. All available data on zircon saturation ranging in composition from mafic to silicic (and/or peralkaline to peraluminous) at temperatures from 750 to 1400 °C were collected to develop two refined models (1 and 2) that may be applied to the wider range of compositions. Model 1 is given by lnCZr(melt) = (14.297 ± 0.308) + (0.964 ± 0.066)·M − (11113 ± 374)/T, and model 2 given by lnCZr(melt) = (18.99 ± 0.423) − (1.069 ± 0.102)·lnG − (12288 ± 593)/T, where CZr(melt) is the Zr concentration of the melt in ppm and parameters M [= (Na + K + 2Ca)/(Al·Si)] (cation ratios) and G [= (3·Al2O3 + SiO2)/(Na2O + K2O + CaO + MgO + FeO)] (molar proportions) represent the melt composition. The errors are at one sigma, and T is the temperature in Kelvin. Before applying these models to natural rocks, it is necessary to ensure that the zircon used to date is crystallized from the host magmatic rock. Assessment of the application of both new and old models to natural rocks suggests that model 1 may be the best for magmatic temperature estimates of metaluminous to peraluminous rocks and that model 2 may be the best for estimating magmatic temperatures of alkaline to peralkaline rocks.
KeywordsZircon Zircon saturation Model Silicate melt Mafic to silicic melts Peraluminous to peralkaline compositions Igneous rocks Thermometer
We appreciate my editors’ critical and constructive comments, which turned out to be very helpful. Dr. Nanfei Cheng is gratefully acknowledged for critical comments on an early version of the manuscript. This work was financially supported by the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (Grant No. XDB18010402), the National Natural Science Foundation of China (Grant No. 41702224), and the Pearl River Talent Plan of Guangdong Province. This work represents a contribution to No. IS-2774 from the GIGCAS.
- Anthony JW, Bideaux RA, Bladh KW, Nichols MC (2003) Handbook of mineralogy. Mineralogical Society of America, ChantillyGoogle Scholar
- Cao GY, Liu Z, Xue HM (2018) LA-ICP=MS zircon U-Pb geochronology and geochemistry of the porphyroclastic lava and rhyolite in west Taipusi Banner area of Inner Mongolia. Geol Bull China 37:397–410 (in Chinese with English abstract) Google Scholar
- Clemens JD, Holloway JR, White AJR (1986) Origin of an A-type granite: experimental constraints. Am Mineral 71:317–324Google Scholar
- Harrison TM, Watson EB, Rapp RP (1986) Does anataxis deplete the lower crust in heat producing elements? Implications from experimental studies. Trans Am Geophys Union (EOS) 67:386Google Scholar
- Larsen L (1973) Measurement of solubility of zircon (ZrSiO4) in synthetic granitic melts. Eos Trans Am Geophys Union 54:479Google Scholar
- Ramírez de Arellano C, Putlitz B, Müntener O, Ovtcharova M, (2011) Petrography and chemistry of zircons from the Chaltén Plutonic Complex and implication on the interpretation of U-Pb zircon ages. In: Conference: Goldschmidt at mineralogicam magazine, vol 75(3), p 1692Google Scholar
- Shellnutt JG, Jahn B-M (2009) Formation of the Late Permian Panzhihua plutonic-hypabyssal-volcanic igneous complex: implications for the genesis of Fe-Ti oxide deposits and A-type granites of SW China. Earth Planet Sci Lett 90:509–519Google Scholar
- Wang Y, Wang L-Q, Danzhen W-X, Li Z, Li S (2017) The discovery of Late Jurassic rhyolite porphyry in Geji area, southern Bangong Co-Nujiang suture zone, Tibet: Constraints from zircon U-Pb geochronology, geochemistry and Hf isotopes. Acta Geosci Sin 38:723–733 (in Chinese with English abstract) Google Scholar
- Wang W-D, Yang HB, Liu T, Ma Z-Z, Zheng J-L, Hu J-H, Wei X-Y (2018) Chronology, geochemistry and tectonic implications of Early Cretaceous igneous rocks in Xinlin Zhanbeicun area, northern Great Hinggan Mountain. Global Geol 37:21–36Google Scholar
- Zhang XF, Zhou Y, Liu JL, Li SC, Wang BR, Teng C, Cao J, Zhang HC (2018) Geochronology and geochemistry for volcanic rocks of Dashizhai Formation and its geological significance in Xi U jimqin Banner, Inner Mongolia. Acta Petrol Sin 34:1775–1791Google Scholar