File:Geology and agriculture (1892) (14788188843).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

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
vernearer the Lower Claiborne forms than either the Midway orLignitic forms. The section here shown is : Section, Coushatta bluffs 6. Orange, red, yellow, gray and white sand, stratifica-tion generally horizontal, but in places showingcross-bedding. It contains numerous gray claygravel and a few thin clay layers. Changing aboveto surface soil 20 ft. 5. Black clay with thin gray sand partings below becominglight brown above. Layer about eight inches thickand two feet from the base contains faint casts ofLeda, Nucula, Lucina a7id Veiiericardia 10 ft. 4. Very dark brown laminated clay filled with large ironconcretions. The concretions are arranged alongthree principal lines ; at the base, a double layerabout 14 feet from the base and a layer at the top. . 20 ft. 3. Black laminated clay, wMth crystals of gypsum 6 ft. 2. Dark brown sand containing a few thin layers of black clay 3 ft. I. Black laminated sandy clay, showing clay partings and numerous crystals of gypsum, to water level 3 ft.
Text Appearing After Image:
Ill) Shreveport Area : Arch/Kology 20I Conclusions.—The possible occurrence of Lower Claiborne atShreveport and of Midway at Albany flats makes the stratigraphyabout Shreveport appear much more complicated than had beensupposed and it is greatly to be regretted that suits of thesamples of the borings of the deep wells in the river bottoms andthe deep well at the ice factory have not been saved. Itfurnishes a flow of warm, artesian water. From this fact it hasbeen supposed that the well has reached the upper part of theCretaceous.* But it must be confessed that the correlation with theCretaceous on the basis of salt water furnished is very doubtful.One of the brine springs of Sabine parish, whatever its ultimatesource may be, flows from the lower Claiborne strata ; the otherfrom presumably Lignitic. It is to be hoped that samples willbe saved from future wells. Appendix A CATAI.OGUE OF Aboriginal Works on Caddo Bottoms N. W. yi of S. IV. Sec. 4, 20 N., 14 IV.—A small, rudelyrectang

Note About Images