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Mineral Resources > Online Spatial Data > Geology > by state > New York Geology

Geologic units in Cattaraugus county, New York

Shenango Formation through Riceville Formation, undivided (Mississippian and Devonian) at surface, covers < 0.1 % of this area

Shenango Formation through Riceville Formation, undivided - Sandstone, siltstone, and shale in varying proportions; distinguished from Shenango-through-Oswayo (MDso) interval on basis of more common gray shale in Riceville as compared with olive-colored shale and sandstone of Oswayo; contains marine fossils.

Lithology: sandstone; siltstone; shale

Shenango Formation through Oswayo Formation, undivided (Mississippian and Devonian) at surface, covers < 0.1 % of this area

Shenango Formation through Oswayo Formation, undivided - Greenish-gray, olive, and buff sandstone and siltstone, and gray shale in varying proportions; includes "Pocono" ("Knapp") and Oswayo of earlier workers; difficult lithologic distinction between Oswayo and "Knapp"- "Pocono" south and east of type area at Olean, N. Y.; contains marine fossils; includes lateral equivalents of Shenango Formation, Cuyahoga Group, Corry Sandstone, Bedford Shale, and Cussewago Sandstone, plus Oswayo Formation.

Lithology: sandstone; siltstone; shale

Conneaut Group, undivided (Upper Devonian) at surface, covers 53 % of this area

Conneaut Group, undivided - In west: Ellicott and Dexterville Formations-shale, siltstone. In east: Germania Formation-shale, sandstone; Whitesville Formation-shale, sandstone; Hinsdale Sandstone; Wellsville Formation-shale, sandstone; Cuba Sandstone.

Lithology: shale; sandstone; siltstone

Oswayo and Venango Formations (Upper Devonian) at surface, covers 16 % of this area

Oswayo and Venango Formations - shale, siltstone, sandstone; replaced eastwardly by Cattaraugus Formation-shale, sandstone, conglomerate.

Lithology: shale; siltstone; sandstone; conglomerate

Connoquenessing and Sharon Formations (Lower Pennsylvanian) at surface, covers 0.1 % of this area

Connoquenessing and Sharon Formations - sandstone, shale; Sharon Formation-shale, sandstone, conglomerate; Olean Conglomerate 50-100 ft. (15-30 m).

Lithology: sandstone; shale; conglomerate

Westfield Shale and Laona Siltstone (Upper Devonian) at surface, covers 0.3 % of this area

Westfield Shale and Laona Siltstone.

Lithology: shale; siltstone

Cuyahoga and Knapp Formations (Lower Mississippian) at surface, covers 0.3 % of this area

Cuyahoga and Knapp Formations - Cuyahoga Formation-shale, sandstone; Corry Sandstone; Knapp Formation-shale, conglomerate 60-100 ft. (20-30 m).

Lithology: shale; sandstone; conglomerate

Chadakoin Formation (Devonian) at surface, covers < 0.1 % of this area

Chadakoin Formation - Light-gray or brownish siltstone and some sandstone, interbedded with medium-gray shale; included in Conneaut Group and "Chemung" of earlier workers; marine fossils common; includes "pink rock" of drillers.

Lithology: siltstone; shale; sandstone

Pottsville Formation (Pennsylvanian) at surface, covers < 0.1 % of this area

Pottsville Formation - Predominantly gray sandstone and conglomerate; also contains thin beds of shale, claystone, limestone, and coal; includes Olean and Sharon conglomerates of northwestern Pennsylvania; thin marine limestones present in Beaver, Lawrence, and Mercer Counties; minable coals and commercially valuable high-alumina clays present locally.

Lithology: sandstone; conglomerate; shale; siltstone; claystone; limestone; coal

Machias Formation (Upper Devonian) at surface, covers 24 % of this area

Machias Formation - shale, siltstone; Rushford Sandstone; Caneadea, Canisteo, and Hume Shales; Canaseraga Sandstone; South Wales and Dunkirk Shales.

Lithology: shale; siltstone; sandstone

Catskill Formation (Devonian) at surface, covers < 0.1 % of this area

Catskill Formation - Grayish-red sandstone, siltstone, shale, and mudstone; locally conglomeratic; contains gray sandstone in upper part; lithologies arranged in fining-upward cycles; equivalent to the Hampshire Formation south of Pennsylvania.

Lithology: sandstone; siltstone; shale; mudstone; conglomerate

Northeast Shale and Shumla Siltstone (Upper Devonian) at surface, covers 5 % of this area

Northeast Shale and Shumla Siltstone.

Lithology: shale; siltstone

Venango Formation (Devonian) at surface, covers < 0.1 % of this area

Venango Formation - Light-gray siltstone interbedded with some flaggy, gray sandstone and some bluish-gray shale; Panama Conglomerate and Woodcock Sandstone are, respectively, the lower and upper key beds defining the formation; referred to as "Cattaraugus" by some workers; includes some red shales where it interfingers to the east and south with the Catskill Formation; marine fossils present.

Lithology: siltstone; sandstone; shale; conglomerate

Wiscoy Formation (Upper Devonian) at surface, covers < 0.1 % of this area

Wiscoy Formation - sandstone, shale; Hanover and Pipe Creek Shales.

Lithology: sandstone; black shale; shale

Gowanda, South Wales, and Dunkirk Shales (Upper Devonian) at surface, covers 0.7 % of this area

Gowanda, South Wales, and Dunkirk Shales.

Lithology: shale