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Allegany county Allegheny formation anticline Average axis Backbone Mountain Bakerstown Baltimore beds belt Big Savage mountains Black shale Bone bore-hole Carboniferous Castleman river Castleman valley Clarion clay Concealed Conemaugh formation crest Deep Creek Deer Park deposits Devonian district east eastern elevation extends feet fire-clay fold forest Freeport Friendsville Garrett county Georges Creek basin Glades Grantsville Gray shale Greenbrier headwaters hills Inches Kittanning limestone loam Lower Kittanning coal Lower Youghiogheny Mahoning marsh Maryland MARYLAND GEOLOGICAL SURVEY Mauch Chunk Meadow Mountain mined Monongahela Mount Savage Negro Mountain northwest Oakland Ohio one-half mile outcrop Pennsylvania line Pittsburg coal Pocono Potomac basin Potomac river Pottsville Pottsville formation region Report rocks sand sandstone sandy shales Savage Mountain Savage river SECTION sediments slope stone strata streams submergence Sunnyside surface Swallow Falls syncline temperature thickness tributaries U. S. Geol Upper Youghiogheny West Virginia western Winding Ridge Youghiogheny basin Youghiogheny river
Page 69 - First Report of Philip T. Tyson, State Agricultural Chemist, to the House of Delegates of Maryland, January, 1860.
Page 227 - In most mountain regions, the fracturing of the strata has been carried on to such an extent that all the available stores of gas and oil that may once have existed in the beds have passed out of the original reservoirs through their defective covers, escaping into the air, and hence it is useless to drill for oil or gas to any ordinary depth in typical mountain regions. • It is barely possible that under a great thickness of close grained beds or shales the gas and petroleum originally contained...
Page 73 - PEALE, AC Lists and Analyses of the Mineral Springs of the United States. Bull. US Geol. Survey, No. 32, 1886, pp.
Page 92 - Run, as far as the confluence of the latter with Deep Creek near Thayerville. Thence it extends in the same southwesterly direction, in a similar series of valleys between Hoop Pole Ridge and the ridge of Pottsville rocks to the west of it, to the West Virginia line at a point about 7 miles southwest of Oakland. This belt is about 37 miles long, and from £ to $ of a mile wide.
Page 92 - ... in a southwesterly direction to the West Virginia line, 1 mile north of Potomac stone. This belt is about 45 miles long and from one-fourth to one-half mile wide.
Page 92 - This belt is about 13 miles long and \ of a mile wide. The sixth area enters the county from West Virginia near Cranesville, and extends south along the valley occupied by Pine Swamp and Muddy Creek as far as Browning Mill, and thence up the valley lying west of Snaggy Mountain for about 4 miles.
Page 67 - JH Report on the Manufacture of Iron addressed to the Governor of Maryland by JH Alexander. Printed by order of the Senate. Annapolis, 1840, 8vo, 369 pp., 3 plates.
Page 78 - Report of progress of stream measurements for the calendar year 1897, including papers by Dwight Porter, JB Lippincott and other hydrographers. 19th Ann. Rept. US Geol. Survey, 1897-98, pt. IV. Washington, 1899. STRATIGRAPHY AND AREAL DISTRIBUTION. With the exception of some scattering Pleistocene deposits, all of the geological formations exposed in Allegany county are of Paleozoic age. 'The Pleistocene deposits are too poorly...
Page 92 - River to points 1£ miles north and 2£ miles south of Sang Run, where it dips under the overlying formation. The fourth area extends from a point on the one last described at McHenry, in a north-northeasterly direction in the valley parallel to and about...