Abstract
Alice Springs age (300–400Ma) shear zones that dissect the SE Reynolds Range, central Australia, are substantially hydrated compared to their host lithologies, indicating the influx of externally derived fluids during shearing. Low δ18O values from the sheared rocks suggest that the fluids were meteoric. Shearing occurred at greenschist-facies conditions, indicating that the surface-derived fluids penetrated into the ductile crust and that the network of shear zones were connected with the surface. These data show that the Earth's surface is an important reservoir for fluids during shearing and rehydration of metamorphic terranes.
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