Based on geothermometer analysis, temperatures of crystallization of the magmas have been obtained ranging and higher.
2.
Using electron microprobe analyses we applied the amphibole-plagioclase geothermometer to adjacent primary microlites in the pseudotachylyte matrix.
3.
The second geothermometer is based on amphibole-quartz-plagioclase equilibria, using the equations from Blundy and Holland ( 1990 ).
4.
The first geothermometer ( O'Hara 2001 ) measures the thermodynamic melting efficiency using clast concentration, which reflects brittle wear processes during frictional melting.
5.
In some zircon crystals, inclusions of the mineral quartz ( SiO 2 ) can be used as proof that silicon was present during crystallization, thus validating the use of this geothermometer.
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