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Articles | Volume 9, issue 5
Articles | Volume 9, issue 5
https://doi.org/10.5194/se-9-1123-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-9-1123-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 9, issue 5
Research article
 | 
25 Sep 2018
Research article |  | 25 Sep 2018

Constraints on Alpine Fault (New Zealand) mylonitization temperatures and the geothermal gradient from Ti-in-quartz thermobarometry

Steven B. Kidder, Virginia G. Toy, David J. Prior, Timothy A. Little, Ashfaq Khan, and Colin MacRae

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Short summary
By quantifying trace concentrations of titanium in quartz (a known geologic “thermometer”), we constrain the temperature profile for the deep crust along the Alpine Fault. We show there is a sharp change from fairly uniform temperatures at deep levels to a very steep gradient in temperature in the upper kilometers of the crust.
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