Peter A. Bull, Stephen J. Culver, Rita Gardner; Chattermark trails as paleoenvironmental indicators. Geology ; 8 (7): 318–322. doi: https://doi.org/10.1130/0091-7613(1980)8<318:CTAPI>2.0.CO;2
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Crescentic markings on the surface of quartz and garnet grains have recently been considered as suitable indicators of paleoenvironment, particularly glacial modification. A review of the literature suggests that other mechanisms can cause similar features. Considerable caution is advised when using these chattermark trails as one-step indicators of glaciation.