Changes

Ti-in-zircon geothermometry has so far been used in [[igneous]] rocks to estimate cooling temperatures of [[magma]] from zircon crystals dated to the [[Hadean]] age (>4.0 Ga). Low crystallization temperatures from zircons of this age suggests the Hadean Earth contained liquid water, which reduced the cooling temperature of crustal materials.<ref name="Watson and Harrison 2005" /> Future studies using Ti-in-zircon thermometry can show the progressive heat loss from a magmatic Hadean Earth, to the onset of [[plate tectonics]] as the planet's crust begins to cool and deform. This will provide previously unknown evidence for the conditions in early Earth and allow testing of ideas of how the planet evolved through the Hadean and [[Archean]] eons.

Ti-in-zircon geothermometry has so far been used in [[igneous]] rocks to estimate cooling temperatures of [[magma]] from zircon crystals dated to the [[Hadean]] age (>4.0 Ga). Low crystallization temperatures from zircons of this age suggests the Hadean Earth contained liquid water, which reduced the cooling temperature of crustal materials.<ref name="Watson and Harrison 2005" /> Future studies using Ti-in-zircon thermometry can show the progressive heat loss from a magmatic Hadean Earth, to the onset of [[plate tectonics]] as the planet's crust begins to cool and deform. This will provide previously unknown evidence for the conditions in early Earth and allow testing of ideas of how the planet evolved through the Hadean and [[Archean]] eons.

On a more recent timescale, Ti-in-zircon geothermometry can be used in zircons found in metamorphic rocks to estimate the pressure and temperatures conditions during metamorphosis. This helps identify the [[Metamorphic facies]] and thus the geologic setting of a rock formation.<ref name="Ewing et al. The robustness of zr-in-rutile and Ti-in-zircon">Ewing, Tanya A.; Hermann, Jörg; Rubatto, Daniela (April 2013). "The robustness of the Zr-in-rutile and Ti-in-zircon thermometers during high-temperature metamorphism (Ivrea-Verbano Zone, northern Italy)". Contributions to Mineralogy and Petrology 165 (4): 757-779. doi:10.1007/s00410-012-0834-5. Retrieved 29 November 2014.</ref><ref name="Liu et al. 2015 Application of Ti-in-zircon on Dabie orogen">Liu, Yi-Can; Deng, Liang-Peng; Gu, Xiao-Feng; Groppo, C.; Rolfo, F. (Jan 2015). "Application of Ti-in-zircon and Zr-in-rutile thermometers to constrain high-temperature metamorphism in eclogites from the Dabie orogen, central China". Gondwana Research 27 (1): 410-423. doi:10.1016/j.gr.2013.10.011. Retrieved 29 November 2014.</ref> It can also be used in sedimentary rocks to help determine the source of [[detrital]] minerals. However, these crystals may sometimes be contaminated by external titanium seeping into fractures.<ref name="Watson Wark Thomas 2006" /><ref name="hoskin and schaltegger, comp of zircon" />

On a more recent timescale, Ti-in-zircon geothermometry can be used in zircons found in metamorphic rocks to estimate the pressure and temperatures conditions during metamorphosis. This helps identify the [[Metamorphic facies]] and thus the geologic setting of a rock formation.<ref>Ewing, T. A., J. Hermann, & D. Rubatto, 2013, The robustness of the Zr-in-rutile and Ti-in-zircon thermometers during high-temperature metamorphism (Ivrea-Verbano Zone, northern Italy): Contributions to Mineralogy and Petrology 165 (4): 757-779. doi:10.1007/s00410-012-0834-5.</ref><ref name="Liu et al. 2015 Application of Ti-in-zircon on Dabie orogen">Liu, Y.-C., L.-P. Deng, X.-F. Gu, C. Groppo, & F. Rolfo, 2015, Application of Ti-in-zircon and Zr-in-rutile thermometers to constrain high-temperature metamorphism in eclogites from the Dabie orogen, central China: Gondwana Research 27 (1): 410-423. doi:10.1016/j.gr.2013.10.011.</ref> It can also be used in sedimentary rocks to help determine the source of [[detrital]] minerals. However, these crystals may sometimes be contaminated by external titanium seeping into fractures.<ref name="Watson Wark Thomas 2006" /><ref name="hoskin and schaltegger, comp of zircon" />

==Errors and Limitations==

==Errors and Limitations==