Virtual Landscapes of Texas

Table of Contents

1. Environmental geology of the Wilcox Group lignite belt, East Texas
   1. Introduction
   
   
   2. Physical Setting of the Lignite Belt
   
   
   3. Geology—Substrate Composition
   
   
   4. General Hydrology
   
   
   5. Geomorphology
   
   
   6. Soils, Vegetation, Climate, and Land Use
   
   
   7. Environmental Geologic Mapping
   
   
   8. Descriptions of Environmental Geologic Units
   
   
   9. Subdivision of Units
   
   
   10. Geomorphic Units
   
   
   11. Substrate Units
   
   
   12. Man-Made Units
   
   
   13. Overlays
   
   
   14. Additional Information Presented on the Environmental Geologic Maps
   
   
   15. Applications of the Environmental Geologic Maps
   
   
   16. State and Federal Mining Laws
   
   
   17. Land Capability
   
   
   18. Prime Farmland
   
   
   19. Ground-Water Resources
   
   
   20. Floodplains and Alluvial Valley Floors
   
   
   21. Summary
   
   
   22. Acknowledgments
   
   
   23. References
   
   
2. Illustrations
   1. Untitled
   
   
   2. Untitled
   
   
   3. Figure 2. Schematic cross section showing relation between environmental geologic units at the surface and those in the subsurface.
   
   
   4. Figure 3. Geology of Wilcox Group lignite belt, East Texas.
   
   
   5. Figure 4. Vegetation areas of Texas (adapted from F. W. Gould, 1969). Map areas of this report are indicated by the numbered rectangles.
   
   
   6. Untitled
   
   
   7. Untitled
   
   
   8. Figure 5. Climatic characteristics of Texas (Arbingast and others, 1973).
   
   
   9. Figure 6. Lithofacies map of Calvert Bluff Formation, Freestone County, Texas (Henry and others, 1976).
   
   
   10. Untitled
   
   
   11. Figure 8. Environmental geology of the Wilcox Group and subsurface geology of the Calvert Bluff Formation from Bastrop County to Trinity River (subsurface percent sand from Kaiser and others, 1978).
   
   
   12. Figure 9. Environmental geology and subsurface geology of the Wilcox Group from Trinity River to Texarkana, Texas (subsurface percent sand from Kaiser and others, 1978).
   
   
   13. Untitled