File:Geology and agriculture (1892) (14581676309).jpg

Identifier: geologyagricultu05loui (find matches)
Title: Geology and agriculture
Year: 1892 (1890s)
Authors: Louisiana Geological Survey Louisiana Agricultural Experiment Station
Subjects: Geology
Publisher: Baton Rouge
Contributing Library: Wellesley College Library
Digitizing Sponsor: Boston Library Consortium Member Libraries

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the creek. But par-ticularly abundant are the light yellowish calcerous concretionsof various shapes and sizes. So abundant are they that theyhave been burned for lime. Probably all the sands and clays forming the hills west ofMill bayou are of this age. The same remark applies to hillylands west of the railroad and north of Sibleys lake. Three-fourths of a mile north of Natchitoches bridge thebluff as shown on PI. 13, exhibits at base 20-25 feet of purplishclay with sand parting, all dipping southward. * Slightly farther to the right, in a little ravine, a bed of light-colored, compact sand is exposed, showing at least a thicknessof 15 feet. This bed is for the most part covered by the talusat the base of the bluff shown in the illustration. It is however, at Grand Ecore, a place on Red river, a fewmiles north of Natchitoches that the Lignitic beds are bestexposed. A section of the same has already been given on p. 71. In the depths of little ravines in the northwestern part of this
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