. Maryland geological survey . e the Sunderland formation laps up around its base, it is believedto run out for some little distance under the Sunderland. In that case,it would be overlaid uncomformably along its margin by the latterformation. As a whole, the Lafayette formation is developed as a terraceand, although the oldest of the surficial deposits, lies topographicallyhighest and at the center of a concentric border of younger terraceformations which wrap about it. THE PLEISTOCENE PERIOD. To this period have been referred the Sunderland, Wicomico, andTalbot formations. There are several
. Maryland geological survey . e the Sunderland formation laps up around its base, it is believedto run out for some little distance under the Sunderland. In that case,it would be overlaid uncomformably along its margin by the latterformation. As a whole, the Lafayette formation is developed as a terraceand, although the oldest of the surficial deposits, lies topographicallyhighest and at the center of a concentric border of younger terraceformations which wrap about it. THE PLEISTOCENE PERIOD. To this period have been referred the Sunderland, Wicomico, andTalbot formations. There are several lines of evidence which indicatethat these formations are Pleistocene. In the first place, they areseparated from the Lafayette by a pronounced uncomformity whichrepresents a period of uplift and erosion. Again, they are separatedfrom the Eecent shore deposits and subaqueous platform by an uncon-formity which also represents a period of uplift and erosion, although MARYLAND GEOLOGICAL SURVEY. PLIOCENE AND PLEISTOCENE, PLATE Fig. i.—view showing rolling surface near edge of Sunderland formation,near huntingtown, calvert county.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectpaleont, bookyear1901
