Anne Arundel county . Fig. i.—view showing Reynolds iron mine in the arundel formation, i mile south of FlG. 2.—VIEW SHOWING MASSIVE VARIEGATED CLAY OF THE PATAPSCO FORMATION, NEAR HAWKINS POINT. 3 Maryland Geological Survey 33 headwaters of the present estuaries penetrated farther inland. Hevaguely indicated the position of an old sea cliff near what is now desig-nated the fall line, which he made the source of many of the bouldersoccurring in the deposits. Chester, in 1884, working in Delaware and ineastern Maryland, also recognized an old shore line far inland from thepresent one
Anne Arundel county . Fig. i.—view showing Reynolds iron mine in the arundel formation, i mile south of FlG. 2.—VIEW SHOWING MASSIVE VARIEGATED CLAY OF THE PATAPSCO FORMATION, NEAR HAWKINS POINT. 3 Maryland Geological Survey 33 headwaters of the present estuaries penetrated farther inland. Hevaguely indicated the position of an old sea cliff near what is now desig-nated the fall line, which he made the source of many of the bouldersoccurring in the deposits. Chester, in 1884, working in Delaware and ineastern Maryland, also recognized an old shore line far inland from thepresent one and differing also from the fall line. To these two menbelongs the credit of recognizing to some extent the feature which enabledMcGee, Darton, and Shattuck to work out a satisfactory classification ofthe surficial deposits by physiographic criteria. The first worker, who, from the study of the surficial deposits, obtaineda really philosophic grasp upon their stratigraphy, was W J McGee who,between the years 1886 and 1891, published several important papers onthis subject. In 1891 McGee, in an exhaustive m
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