. Maryland geological survey . of deposition and certain charac-teristics of location based on the existing topography. Only a few ofthe large number of localities examined furnished well-defined specimenscapable of identification. The geological horizons, localities where plantremains were collected, and the nature of the deposits are shown in thefollowing table: Formation. Sunderland Talbot Locality. Nature of Deposits. Near the headwaters of Island Creek, Calvert county Buff colored sandy of Rocks, Calvert county Grayish sandy clay. Bodkin Point, Anne Arundel county Peat and coar
. Maryland geological survey . of deposition and certain charac-teristics of location based on the existing topography. Only a few ofthe large number of localities examined furnished well-defined specimenscapable of identification. The geological horizons, localities where plantremains were collected, and the nature of the deposits are shown in thefollowing table: Formation. Sunderland Talbot Locality. Nature of Deposits. Near the headwaters of Island Creek, Calvert county Buff colored sandy of Rocks, Calvert county Grayish sandy clay. Bodkin Point, Anne Arundel county Peat and coarse swamp debris. Grove Point (Pond Neck), Cecil Swamp debris and fine sandy silt. Grace Point, Baltimore county Swamp debris and fine sandy silt. Tolly Point (Bay Ridge), Anne Arundel county Black organic silt, fine sand andclay. Drum Point, Calvert county Black organic silt, fine sand andclay. MARYLAND GEOLOGICAL SURVEY PLIOCENE AND PLEISTOCENE PLATE XXXII 160 160 140 130* 120° 110° (00° 90* 80* 10* 60* SO 40° 30. NORTH AMERICA Showing the Distribution ofNorth Amerioan Species of C WO Miles 1000 Miles Elephas primigenras II1111 Elephas colmnbi \//A Elephas imperator^C MARYLAND GEOLOGICAL SURVEY 149 In the Sunderland formation the specimens consist entirely of leafimpressions in well-defined layers, apparently having been deposited instill waters, their inclusion in limited numbers being merely incidental inconnection with the accumulation of inorganic sediments. In the Talbotformation, on the other hand, the specimens consist of more or less wellpreserved remains of leaves, seeds, fruits, twigs, branches, logs, andstumps, included in masses of vegetable debris or deposits of finely com-minuted vegetable matter, in which inorganic matter is present in rela-tively small amounts. The first indicates inorganic sediments laid downin quiet waters into which a few vegetable remains were accidentally car-ried. The second represents, very largely, the accumulation of veget
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectpaleont, bookyear1901
