Prince George's CountyJohns Hopkins Press, 1911 - 235 Seiten |
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2.-VIEW SHOWING 36 inches acre Amer Aquia Arundel Atlantic Baltimore beds Calvert Chesapeake Bay Choptank Clark Coarse Coastal Plain color Columbia contains Creek Cretaceous crops crystalline rocks depth described diatomaceous earth District Eocene Eocene deposits erosion estuaries exposed feet forest Fort Washington fossils Geol glauconite gravel greensand hardwood iron Jersey Jour Lafayette land Laurel lignite Linné loam localities Magothy formation marls Maryland Matawan materials miles Miocene Nanjemoy occur outcrop overlying P.ct Patapsco Patuxent River Piedmont Plateau pine Piscataway Piscataway Creek places plant Pleistocene portion Potomac deposits Potomac formation Potomac group Potomac River Prince George's County produced Raritan region sand sandy loam scarp slopes soil type southeast species strata stratigraphic streams submergence subsoil Sunderland surface Surv Susquehanna clay terrace Tertiary thickness timber tion tobacco trees unconformably Upper Marlboro valleys vicinity Washington Weather Wicomico
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Seite 45 - TYSON, PHILIP T. Second Report of Philip T. Tyson, State Agricultural Chemist, to the House of Delegates of Maryland, Jan., 1862.
Seite 191 - September 21, and the average date of the last killing frost in the spring is May 14.
Seite 60 - BIBBINS, ARTHUR. Notes on the Paleontology of the Potomac Formations. Johns Hopkins Univ. Circ., vol. xv, 1895, pp. 17-20. The author describes the occurrence of cycads and other plant remains in the Potomac deposits of Maryland. The Contee and Muirkirk localities are described in detail. CLARK, WB Cretaceous Deposits of the Northern Half of the Atlantic Coastal Plain.
Seite 63 - Outline of present knowledge of the physical features of Maryland, embracing an account of the physiography, geology, and mineral resources.
Seite 35 - ... of the United States, from a personal inspection of some of its strata, and the perusal of most of the publications •which bear a reference to it, I wish to suggest that what is termed the alluvial formation in the geological maps of Messrs. Maclure and Cleveland is identical and contemporaneous with the newer Secondary and Tertiary formations of France, England, Spain, Germany, Italy, Hungary, Poland, Iceland, Egypt, and Hindostan.
Seite 48 - HEILPRIN, ANGELO. On the Stratigraphical Evidence Afforded by the Tertiary Fossils of the Peninsula of Maryland.
Seite 57 - WOOLMAN, LEWIS. Artesian wells and water-bearing horizons of Southern New Jersey (with a "note on the extension southward of diatomaceous clays and the occurrence there of flowing artesian wells.") New Jersey Geol. Surv., Kept.
Seite 51 - The mineral springs of the United States: Bull. US Geol. Survey No. 32, 1886.
Seite 59 - NH An outline of the Cenozoic History of a Portion of the Middle Atlantic Slope.
Seite 65 - SHATTUCK, GEORGE BURBANK. The Pleistocene Problem of the North Atlantic Coastal Plain. Johns Hopkins Univ. Circ., vol. xx, 1901, pp.