Abstract
Study of regionally metamorphosed Precambrian quartzites from Tasmania indicates that ripple marks may be preserved in rocks that have been sufficiently deformed to have a preferred orientation of quartz and mica. Ripple marks may be distinguished from tectonic structures of similar appearance (pseudo-ripple marks) only if sufficient diagnostic sedimentary features are retained. Petrofabric analysis is inconclusive in distinguishing ripples from pseudo-ripples because tectonic and sedimentary structures may be similar in orientation.
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