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Allegany county Allegheny anticline Appalachian axis Baltimore and Ohio beds Big Vein Bittinger Braddock Run clay Clinton Concealed conglomerate considerable Cumberland deposits District drainage east eastern Evitts Creek Evitts Mountain exposed feet Finzel fire-clay Flintstone folds forest formation fossiliferous Frostburg Garrett county Georges Creek valley Grantsville Helderberg inches iron Jennings Run Keyser land limestone Little Orleans Lonaconing lower MARYLAND GEOLOGICAL SURVEY measurements Mineral mines mound Mountain anticline Mountain Lake Park National Road North Branch observed Ohio Railroad Oldtown one-half mile Oriskany outcrops Pennsylvania Pine portions Potomac river Pottsville Rawlings region Report Ridge rocks Salina sandstone Savage Mountain second-feet seen shales shaly Shriver side Sideling Hill Creek slopes soils southward species stone strata streams surface syncline thickness timber tion topographic Town Creek Town Hill trees Tuscarora Tussey Mountain upper vicinity Warrior Mountain West Virginia western Westernport White
Page 64 - A Report to the Navy Department of the United States on American Coals, Applicable to Steam Navigation, and to other purposes.
Page 85 - NEWELL, FH, AND OTHERS. Report of progress of stream measurements for the calendar year 1897, including papers by Dwight Porter, JB Lippincott and other hydrographers.
Page 74 - First Report of Philip T. Tyson, State Agricultural Chemist, to the House of Delegates of Maryland, January, 1860.
Page 75 - REPORT ON THE CLAY DEPOSITS of Woodbridge, South Amboy and other places in New Jersey, together with their uses for firebrick, pottery, &c.
Page 97 - Tentaculite limestone is very marked because of the different weathering qualities of the two rocks. The Salina rock weathers into soil very completely, while the Tentaculite limestone leaves innumerable small, thin, dark-blue slabs upon the surface. The thickness of the formation is nearly 800 feet. The two partial sections given below are believed to represent the full thickness as well as a duplication of some of the middle beds, as indicated. The Potomac section extends from the bottom of the...
Page 96 - O'Harra in the report previously cited: Lithologically, the Helderberg is preeminently a limestone formation. Argillaceous materials occur as impurities in some of the beds, but these are not important, and sandstones are almost wholly lacking. Thin bands of chert, which are white or yellowish-white in color, occur sparingly throughout the upper part of the formation. Most of the limestone in the upper part is heavily bedded, and much of it is highly fossiliferous. The lower part of the Helderberg...
Page 74 - TYSON, PHILIP T. Second Report of Philip T. Tyson, State Agricultural Chemist, to the House of Delegates of Maryland, Jan.
Page 71 - 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 79 - JOHN J. Notes on the Lower Carboniferous groups along the easterly side of the Appalachian area in Pennsylvania and the Virginias. Amer. Jour. Sci., 3rd ser., vol. xxxiv, 1887, pp. 37-44. General discussion of the " Umbral " and " Vespertine," containing notes on the " Umbral