Final report documenting a high-sensitivity airborne gamma ray and magnetic survey of the Blytheville quadrangle including an analysis of the geology and interpretation of geophysical data.

These are the geological averaged record data listings for the Blytheville quadrangle, as part of its parent document Mississippi and Florida Airborne Survey, Final Report: Blytheville Quadrangle, Tennessee, Arkansas, Alabama, and Missouri.

These are the geological single record data listings for the Blytheville quadrangle, as part of its parent document Mississippi and Florida Airborne Survey, Final Report: Blytheville Quadrangle, Tennessee, Arkansas, Alabama, and Missouri.

From abstract: Planning waste-disposal facilities and impoundments is complicated by karst carbonate terrane in the Ozarks. Thermal imagery (8-13 micrometer wavelength) and color infrared photography aid in identifying losing streams, sinkholes and hydrologic conditions encouraging collapse. Imagery and photography were acquired in Greene and Reynold Counties, Mo., in March 1972 and June 1973. Differences in thermal levels correlating with losing and gaining reaches of Logan Creek valley, Reynolds County, were not visually apparent in predawn March imagery but statistical analysis of predawn magnetic-tape data indicated greater variance in emitted energy from the losing reach than from the gaining reach.

Summary: "This report provides data on the alluvial aquifer of the Lower Mississippi Valley in the area between Cape Girardeau, Missouri, and Port Gibson, Mississippi. Maps are presented of the Tertiary surface on which the alluvial aquifer rests as well as the geology of this surface and the areas where hydrologic recharge to the alluvial aquifer may occur. A set of piezometric-surface maps, together with hydrographs of observation wells, river stages, precipitation rates, and data on the hydrologic properties of the alluvium, makes it possible to calculate changes which take place in the aquifer. Further data are presented on the chemical quality of groundwater. The relevance of these data to engineering problems is discussed" (p. ix).