Geometric interpretation of lunar craters

Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado

Geology and description of thorium and rare-earth deposits in the southern Bear Lodge Mountains, northeastern Wyoming

Geology and description of thorium and rare-earth veins in the Laughlin Peak area, Colfax County, New Mexico

Potential effects of deep-well waste disposal in western New York

Hydrothermal alteration in research drill hole Y-3, Lower Geyser Basin, Yellowstone National Park, Wyoming

GIRAS; a geographic information retrieval and analysis system for handling land use and land cover data

Mixed-layer clay in the Pierre Shale and equivalent rocks, northern Great Plains region

The brachiopod genera Hebertella, Dalmanella, and Heterorthina from the Ordovician of Kentucky

Rock pushing and sampling under rocks on Mars

Environmental implications of element emissions from phosphate-processing operations in southeastern Idaho

Preliminary correlation of post-Erie interstadial events :(16,000-10,000 radiocarbon years before present), central and eastern Great Lakes region, and Hudson, Champlain, and St. Lawrence Lowlands, United States and Canada

Middle Jurassic (Bathonian) ammonites from southern Alaska

Chemical composition of sedimentary rocks in California and Hawaii

Monazite in the granitic rocks of the southeastern Atlantic States; an example of the use of heavy minerals in geologic exploration