Abstract

The Miocene Hawthorne formation of northern Florida and southwestern Georgia consists principally of unconsolidated sands and thin beds of clay. It was studied to investigate the relationship between direction of cross-bedding and textural variations. From 24 outcrops 284 cross-bedding measurements were obtained and 50 size analyses were made. In contrast to many other studies, cross-bedding of the Hawthorne formation was found to be extremely variable but, nevertheless, indicating a southerly direction of transport with large local deviations. Toward the S. the sands generally become coarser and have their poorest sorting. Relationships between sorting and the median diameter of the sands were not as clearly defined as in other studies. Several possibilities are suggested to explain the anomalies in direction of transport and variation of texture.

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