Abstract
The temperature range for these mylonites is thought to be roughly between 250 and 500 °C. There is a gradual transition between cataclasites and low-grade mylonites. Whereas many feldspar porphyroclasts in low-grade mylonites still show fracturing by cataclasis, the quartz is usually deformed by crystal-plastic processes as shown by its change in shape and by undulose extinction. At increasing temperature bulging recrystallisation starts to manifest itself along the lobate contacts and eventually recrystallisation by subgrain rotation takes over (Chapter 10).
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© 2010 Springer-Verlag Berlin Heidelberg
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Trouw, R.A.J., Passchier, C.W., Wiersma, D.J. (2010). Low-Grade Mylonites. In: Atlas of Mylonites- and related microstructures. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-03608-8_4
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DOI: https://doi.org/10.1007/978-3-642-03608-8_4
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Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-03607-1
Online ISBN: 978-3-642-03608-8
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