Ancient Courses Mississippi River Meander Belt, Plate 22 Sheet 05

Sheet 5/15 of Plate 22 from "Geological investigation of the alluvial valley of the Lower Mississippi River", 1944. Page 42 of the report references it as follows: Details of the history of the Mississippi River following its diversion through Thebes Gap are shown on maps of plate 22. This late epoch of the river's history has been divided into 20 stages, separated by intervals of 100 years, each of which is represented by a reconstructed ancient course. (Stages 17 through 20 are marked by historical courses dating from 1765.) The maps of plate 22 are confined to a strip along the present river and do not show the Teche segment, large parts of the Walnut Bayou segment, or the St. Francis and Lafourche segments of the meander belts in their entirety. The position of each reconstructed course in the meander belt was established from study of local accretion topography shown on aerial photographs. Reconstructions of stream courses were made by projecting the curvature of an isolated channel segment to its junction with another channel segment whose comparable age had been previously determined by similar studies of local accretion features. The curvature of channel segments is shown i

Date

December 1, 1944

Mapmaker / publisher

US Army Corps of Engineers – Mississippi River Commission, Harold N. Fisk

Place

the United States

Archive

Wikimedia Commons

Type

map

Original size

9,898 × 14,237 pixels

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