Abstract
In 1970, Dobkins and Folk demonstrated that isotropic beach gravels possess distinctive shapes. This characteristic has allowed beach gravels to be distinguished from fluvial gravels, providing a valuable tool for determining the conditions under which ancient conglomerates were deposited. However, two of the beaches investigated worldwide by Dobkins and Folk possessed gravels whose shapes differed from those found elsewhere. Detailed reinvestigation of one of these anomalous sites, at Batemans Bay in New South Wales, Australia, has shown the shape of the gravels to be indistinguishable from that of beach gravels found elsewhere in the world. This result confirms the value of gravel shape measurement as an aid in the determination of the depositional environment of conglomerates.
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