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Campbell Creek Marine Zone: Its Extent, Component Facies, and Relation to Coals of Kanawha Formation in Southern Kanawha County, West Virginia

Ronald L. Martino

Recent widening of the West Virginia turnpike has provided extensive exposure through the Campbell Creek marine zone, enabling a much clearer view of its stratigraphy and sedimentary facies. Nineteen stratigraphic sections were measured and described in detail in the Belle and Cedar Grove 7.5^prime quadrangles.

Marine-influenced stratigraphic intervals are distinguished and correlated by use of both body and trace fossils. Productid and spiriferid brachiopods, and pelmatozoan ossicles are commonly associated with the nodules as well as with scour-fill, cross-stratified sandy limestones. In addition, a diverse suite of shallow marine trace fossils is developed. Some of the more common ichnogenera include Olivellites, Asterosoma, and Teochichnus.

Rather than a single, laterally persistent marine band, the Campbell Creek limestone represents the lowermost of two or three nodular limestone zones that are sporadically developed over a stratigraphic interval of 16 m or more. Upper and lower divisions of the Campbell Creek marine zone are recognizable along Cabin Creek south of Chelyan where marine-influenced strata are separated by a 4-8 m thick interval consisting of coal, dark-gray rooted shales and siltstones, and channel and crevasse splay sandstones.

The base of the marine zone begins 10-12 m above the No. 2 gas coal and overlies distributary channel and overbank facies.

A depositional model integrates both body and trace fossils, lithology, sedimentary structures, and paleocurrent data. A lower delta plain mosaic of environments includes distributary channels, crevasse splays, coastal swamps, tidal creeks and flats, and bays.

AAPG Search and Discovery Article #91031©1988 AAPG Eastern Section, Charleston, West Virginia, 13-16 September 1988.