Anne Arundel county . idea of the manner of their forma-tion; and owing to the character of the materials, which promised littlein the way of fossil evidence, almost no attempt was made to classifythem. H. D. Eogers, in 1844, first used the term post-Pliocene orPleistocene for these deposits of latest Tertiary age, describing underthis caption the fossiliferous deposits at Wailes Bluff. Desor, eight yearslater, described these same deposits and attributed the origin of the largeboulders found therein to the transporting agency of ice. Very little progress was made for the next 25 years. In 187
Anne Arundel county . idea of the manner of their forma-tion; and owing to the character of the materials, which promised littlein the way of fossil evidence, almost no attempt was made to classifythem. H. D. Eogers, in 1844, first used the term post-Pliocene orPleistocene for these deposits of latest Tertiary age, describing underthis caption the fossiliferous deposits at Wailes Bluff. Desor, eight yearslater, described these same deposits and attributed the origin of the largeboulders found therein to the transporting agency of ice. Very little progress was made for the next 25 years. In 1877 Wm. published a paper on Gravel and Cobblestone Deposits of Vir-ginia and the Middle States. In this the author recognized clearly theorigin of the surficial deposits in glacial times through the work of streamsaided by the action of ice. He also made the important observation thatthese deposits were laid down at a time when the land was lower and the MARYLAND GEOLOGICAL SURVEY ANNE ARUNDEL COUNTY, PLATE I. Fig. i.—view showing Reynolds iron mine in the arundel formation, i mile south of hanover.
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Keywords: ., bookauthormarylandgeologicalsur, bookcentury1900, bookdecade1910
