Pg. 83-90. Meadville group. Present in northwestern Pennsylvania and northeastern Ohio. Consists of (descending): (1) Meadville Upper shale, 25 feet (bluish-gray or ashen-gray shale, argillaceous at top, sandy lower down, sometimes flaggy, never massive); (2) Meadville Upper limestone, 1 foot; (3) Meadville Lower shale, 40 feet (generally ash gray shale with sandy flags, which increase in number toward bottom); (4) Sharpsville Upper sandstone, 50 feet (layers of fine bluish-gray or grayish-brown flagstone, 1 to 2 feet thick, alternating with thin layers of grayish shale); (5) Meadville Lower limestone, 1 to 2 feet (impure, hard, flinty, persistent); (6) Sharpsville Lower sandstone, 10 to 30 feet (series of flags, 6 inches to 2 feet thick, exactly like Upper Sharpsville sandstone); and (7) Orangeville shale, 100 feet. Underlies Shenango group [Burgoon sandstone] and overlies Corry sandstone. Age is Mississippian.
Named from Meadville, Crawford Co., northwestern PA.

Source: US geologic names lexicon (USGS Bull. 896, p. 1331).

Pg. 52-54, 56. Meadville shale of Cuyahoga group. Cuyahoga, in its typical area, is elevated to group rank, and subdivisions (ascending) Orangeville shale, Sharpsville sandstone, and Meadville shale are treated as formations. Meadville in Cleveland area [this report] is 30 to 250 feet thick and consists of alternating blue shale, thin sandstone, and sandy limestone. Unconformably underlies Sharon conglomerate. [Age is Mississippian.]

Source: US geologic names lexicon (USGS Bull. 1200, p. 2441).

See also White (1881) entry; Wilmarth, M.G., compiler, 1928, Tentative correlation of the named geologic units of Pennsylvania, USGS unpub. corr. chart, Apr. 5, 1928, sheet 1 of 2.
†Meadville group (in Pocono group). Replaced with Cuyahoga formation. Nos. 1, 2, and 3 of [White's (1881)] description correspond to Meadville shale member of present [ca. 1936] nomenclature, and Nos. 4, 5, and 6 correspond to Sharpsville sandstone member. In northeastern Ohio the Cuyahoga is treated as a group and the Meadville, Sharpsville, and Orangeville as formations.
†Meadville Upper shale (in Cuyahoga formation). A name applied in early Pennsylvania reports to upper part of Meadville shale member of Cuyahoga formation of present [ca. 1936] nomenclature. See original description under [White (1881)]. See also Custards shale member.
†Meadville Upper limestone (in Cuyahoga formation). This is a limestone bed in midst of Meadville shale member of Cuyahoga formation of present [ca. 1936] nomenclature. The USGS does not apply same name to a unit and to a part of that unit. Caster proposed (1934) it be renamed French Creek limestone.
†Meadville Lower shale (in Cuyahoga formation). A name applied in early Pennsylvania reports to lower part of Meadville shale member of Cuyahoga formation of present [ca. 1936] nomenclature. See original description under [White (1881)]. See also Harvest Home shale member and Byham limestone member.
†Meadville Lower limestone (in Cuyahoga formation). A name applied in early Pennsylvania reports to a thin limestone in middle of Sharpsville sandstone member of Cuyahoga formation. See original description under [White (1881)]. See also West Mead limestone member.
Meadville monothem; Meadville stage. Names applied by K.E. Caster, 1934 (Bull. Amer. Paleo., v. 21, no. 71, table opp. p. 61, p. 129), to the rocks designated "Meadville group" by I.C. White (1881), which were later proved to be same as Cuyahoga formation of Ohio, by which name they have been called in many reports, and divided into (descending) Meadville shale member, Sharpsville sandstone member, and Orangeville shale member. Caster discarded Meadville shale member, dividing it into several newly named units, and reverted to an old and conflicting usage of "Meadville."

Source: US geologic names lexicon (USGS Bull. 896, p. 1331-1332).

Pg. 52-53. [Meadville shale member] included in Tinker Creek facies of [Cuyahoga] formation in Ohio. Lower part of member consists largely of blue-black argillaceous fissile shales and blue-gray thin-laminated arenaceous shales with some interbedded micaceous fine-grained sandstones; number and thickness of sandstones increase in upper part and make up as much of deposit as the shales. Thickness 100 to 200 feet. Overlies Sharpsville sandstone member; contact gradational. [Age is Early Mississippian.]

Source: US geologic names lexicon (USGS Bull. 1200, p. 2441).

Eight members recognized in Cuyahoga formation (ascending): Orangeville, Sharpsville, Strongsville (new), Meadville, Rittman, Armstrong, Wooster (new), and Black Hand. Field evidence indicates that Shenango sandstone and overlying Hempfield shale (new) are stratigraphic equivalents of upper part of Meadville member in Cuyahoga and Medina Counties, northwestern Pennsylvania. Meadville contains a mixed late Kinderhook-early Osage fauna.

Source: US geologic names lexicon (USGS Bull. 1200, p. 2441).

Pg. G4 (fig. 2). Meadville Shale of Cuyahoga Group. In Trumball and Cuyahoga Counties, northeastern Ohio, age is Early Mississippian (Tournaisian; Osagean).

Source: Publication.

In PA, the Cuyahoga has traditionally been given group rank and subdivided into three formations: Orangeville Shale, Sharpsville Sandstone, and Meadville Shale. Because of limited mappability, the subdivisions are herein regarded as members of the Cuyahoga Formation, which is practically all shale in the study area.

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