Naturally deformed quartzo-feldspathic rocks

 

Mylonites (Redbank shear zone, Australia)

Naturally deformed quartzo-feldspathic rocks

 

weak deformation (Mulwaree) / strong deformation (Mulwaree) / mylonites (Redbank) / ultramylonites (Redbank)

 

List of microstructures

 

 

 

 

77

 

Quartzo-feldspathic mylonite developed at greenschist conditions; feldpars fractured, quartz deformed by regime 2 dislocation creep.

78

 

Detail of quartzo-feldspathic mylonite, with fractured and rotated K feldspar.

79

 

Highly deformed quartzo-feldspathic mylonite; feldspars have fractured and separated, quartz has deformed by regime 2 dislocation creep.

80

 

Detail of quartzo-feldspathic mylonite, dextral shear.

81

 

Quartzo-feldspathic mylonite (same as 80); plane polarized light.

82

 

Quartzo-feldspathic mylonite developed at greenschist conditions; feldspar deformed by regime 1 dislocation creep, quartz by regime 2 dislocation creep.