. Maryland geological survey. .The type section in Lafayette County, Mississippi, has recently beenshown to be of Eocene age.^ The materials comprising the Lafayette formation consist of clay,loam, sand, and gravel which are often highly ferruginous, the iron beingoften present in the deposits in sufficient amount to act as a materials are generally very imperfectly sorted. The depositsrarely exceed 50 feet in thickness, while the southeasterly dip is only afew feet in the mile. QUATEEFARY Pleistoce7ie The Pleistocene deposits consist of a series of surficial materialsEnown under
. Maryland geological survey. .The type section in Lafayette County, Mississippi, has recently beenshown to be of Eocene age.^ The materials comprising the Lafayette formation consist of clay,loam, sand, and gravel which are often highly ferruginous, the iron beingoften present in the deposits in sufficient amount to act as a materials are generally very imperfectly sorted. The depositsrarely exceed 50 feet in thickness, while the southeasterly dip is only afew feet in the mile. QUATEEFARY Pleistoce7ie The Pleistocene deposits consist of a series of surficial materialsEnown under the name of the Columbia Group, which has been dividedin Maryland and adjacent States into the Sunderland, Wicomico, andTalbot formations. They consist mainly of a series of terraces whichwrap about the Lafayette and the lower portions of the older formations,and hence extend as fluviatile deposits up the stream courses. ^ Berry, Journ. Geol., vol. xix, 1911, pp. 249-256. MARYLAND GEOLOGICAL SURVEY. LOWER CRETACEOUS, PLATE II. Fig. I.—VIEW showing basal conglomerate of the patuxent otorlying the piedmont CRYSTALLINES AT ROLAND PARK, BALTIMORE CITY.
Size: 1969px × 1269px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectpaleont, bookyear1901
