Abstract

The study of the gross anatomical characteristics of the Lower Freeport sandstone in eastern Ohio comprises statistical analyses of the "channel" sandstone and the Middle Kittanning-Lower Freeport interval thickness, external morphology, nature of the boundaries, and crossbedding directions of the "channel" sandstone. The anatomical properties of the sandstones seem to be grouped by geographical areas approximately perpendicular to the northeast-southwest trending Washingtonville marine embayment. A comparison of the anatomical variations of the sandstones to the geometry of recent alluvial sediments suggests that along the southern landward side of the embayment, the sandstones are mainly fluvial deposits accumulated on narrow and shallow channelways. Further northward toward the seaward side of the embayment, the sandstones are apparently deposited on broader and relatively deeper channel areas.

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