Named for Bottle Creek as one of four formations in lower part of Snowy Pass Group (defined) in Sierra Madre, Carbon Co, WY, Northern Rocky Mountain region. Type section is in secs 22, 23, 26, and 27, T14N, R87W in western part of Sierra Madre. No complete section known. Only lower and middle parts of formation thought to be exposed at type. Unconformably overlies Cascade Quartzite of Snowy Pass. Contact between Bottle Creek and the younger Copperton Formation of Snowy Pass is a thrust fault. Basal unit of Bottle Creek is a diamictite which is overlain in succession by red, yellow, green metalimestone, buff quartzite, diamictite, and quartzite. The diamictite is a paraconglomerate in a matrix of green or tan phyllite interbedded with medium- to coarse-grained, pale-green schistose, feldspathic quartzite. Paraconglomerate has dispersed angular to round clasts (up to 60 cm diameter) of red granite, gray granite, quartzite and green phyllite. Is 360 m at type; may be 400 m thick; thins eastward. Lower diamictite correlated with Vagner Formation of Medicine Bows. Middle quartzite may correlate with Rock Knoll and Headquarters Formations of Medicine Bows. May be an offshore facies of Medicine Bow rocks, and of glacio-marine origin. Of Early Proterozoic age. Geologic map; stratigraphic charts.

Source: GNU records (USGS DDS-6; Denver GNULEX).