Nonproductive lower Bowes. International Nuclear 1-18 Flynn. Core Depth 4089.5 ft. Producing lithology of upper Bowes interval. Large shell fragments with lesser volumes of quartz sandstone and ooids make up this bioclastic limestone.
Secondary porosity is both intragranular and intergranular.
In the field area, the regional Bowes Member of the Sawtooth Formation has been locally incised by a valley, perhaps in association with a structurally controlled low area. This paleovalley was subsequently filled with a mix of high-energy siliciclastic and carbonate sediments of an aggradational coastal braid plain. On the outcrop there is no direct analog for the producing interval in the field 34 miles to the north. The upper Bowes deposits of the field area were laid down in shallow, weakly channelized and rapidly shifting channels within a paleovalley. It is unlikely that individual channels can be distinguished at any level of investigation.