Appendices containing data on uranium availability in the Lemmon Quadrangle to accompany a report on U.S. uranium resources in South and North Dakota.

Appendices containing data on uranium availability in the Dickinson Quadrangle to accompany a report on U.S. uranium resources in North Dakota.

Abstract: This report lists the machine-readable data files developed for the Madison Limestone and Northern Great Plains Regional Aquifer System Analysis (RASA) projects that are stored on magnetic tape and available from the U.S. Geological Survey. Record format, file content, and size are given for: (1) Drill-stem-test data for Paleozoic and Mesozoic formations; (2) geologic data from the Madison Limestone project; (3) data sets used in the regional simulation model; (4) hydraulic-head data for the Lower and Upper Cretaceous aquifers; and (5) geologic data for Mesozoic formations of the Northern Great Plains.

From Introduction: "The Dickinson Quadrangle (1º x 2º), North Dakota (Fig. 1), was evaluated to a depth of 1500 m to identify geologic environments and delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits."

From Introduction: "The Lemmon Quadrangle, South Dakota and North Dakota, was evaluated to identify geologic environments and delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits."

This report follows the evaluation of uranium resources in the Ekalaka 1°x 2° Quadrangle, Montana and North and South Dakota to a depth of 1,500 m (5,000 ft) using available subsurface geologic information.

The following plates depict the geology of the Ekala quadrangle in Montana, North and South Dakota.