GEOLEX

Summary of Citation: Hostler

Publication:
Kay, G.M., 1943, Chemical lime in Pennsylvania: Economic Geology,
   v. 38, no. 3, p. 188-203

Usage in Publication:
Hostler member

Modifications:	Geologic Province:	Dominant Lithology:
Named	Appalachian basin	Limestone

Summary:
Named the Hostler member of the Hatter formation in central and south-central PA for village of Hostler, Centre Co. Unit is uppermost member of formation. Consists of dark, tan-weathering, massive, richly fossiliferous, siliceous and argillaceous limestone in the lower part, and dark, impure, well-bedded, somewhat laminated, sparsely fossiliferous limestone in the upper part. Thickness is 63 feet at type locality. Overlies Grazier member of Hatter formation and underlies Snyder member of Benner limestone. The Hostler is of Middle Ordovician age.

Summary of Citation: Hostler

Publication:
Kay, G.M., 1948, Summary of Middle Ordovician bordering Allegheny
   synclinorium, IN Galey, J.T., ed, Appalachian basin Ordovician
   symposium: American Association of Petroleum Geologists
   Bulletin, v. 32, no. 8, p. 1397-1416

Usage in Publication:
Hostler formation

Modifications:	Geologic Province:	Dominant Lithology:
Revised	Appalachian basin

Summary:
Raised the Hostler to the Hostler formation of the Hatter group in PA.

Summary of Citation: Hostler

Publication:
Faill, R.T., Glover, A.D. and Way, J.H., 1989, Geology and
   mineral resources of the Blandburg, Tipton, Altoona, and
   Bellwood quadrangles, Blair, Cambria, Clearfield and Centre
   Counties, Pennsylvania: Pennsylvania Geological Survey
   Topographic and Geologic Atlas, 4th series, 86, 209 p., scale
   1:24,000 and 1:48,000

Usage in Publication:
Hostler Member

Modifications:	Geologic Province:	Dominant Lithology:
Overview Age modified	Appalachian basin

Summary:
The Hatter Formation has been recognized throughout the Valley and Ridge province in central PA, but changes character in the extreme northeast. According to Wagner (1966), it extends in the subsurface to WV. Unit consists of a basal fossiliferous limestone, overlain by fine-grained limestone containing shaly partings, which in turn is overlain by fucoidal, fossiliferous magnesian limestone. The basal Eyer Member is composed of fossiliferous, medium- to thick-bedded calcarenites interbedded with medium-bedded calcilutites and thin, irregular shaly partings. The middle Grazier Member consists of medium-dark-gray, medium- to thick-bedded calcisiltite and calcilutite. Upper Hostler Member is coarser grained than the Grazier, consisting mostly of calcisiltite and thin interbeds of calcarenite. Upper contact with the Snyder Formation is placed at the oolite beds that mark the base of the Snyder. The Hostler Member is 12+/-2 m thick. No basis given for Late Ordovician age assignment of the Hatter. [No mention of Black River Group.]