Now showing items 11-20 of 54
Clay mineral facies development in recent surface sediments of the northeastern Gulf of Mexico
Three major rivers supply the bulk of the clay mineral matter to the northeastern Gulf of Mexico. The type of clay supplied is a function of the clay minerals in the soils of the source basins and appears to be largely ...
The Jackson Eocene ostracoda of Mississippi
In spite of the extensive micropaleontological literature, there has been little systematic study of the second most stratigraphically useful microfaunal group---the ostracoda---from the type areas of the Jackson group. ...
The volcanic geology of the Pahranagat Range and certain adjacent areas, Lincoln County, southeastern Nevada
Extended reconnaissance over 700 square miles of the Pahranagat, Alamo and Hiko Ranges has revealed that more or less continuous emission of fissure type nuees ardentes has been punctuated by periods of fluvio-lacustrine ...
Studies of sedimentary environments in the Cretaceous Dakota Sandstone in northwestern Colorado
The Cretaceous Dakota Sandstone is a land-derived, relatively unfossiliferous lithogenetic unit which occurs over a large part of the western interior of the United States and Canada. Its thickness over most of this area ...
Petrofabric analysis of experimentally deformed calcite-cemented sandstones
Cylinders of sand crystals, composed of single crystals of calcite that poikilitically enclose detrital grains, and calcite-cemented sandstones from the Tensleep (Pennsylvanian, Wyoming) and Supai (Permian, Nevada) formations ...
The geology of the Pahranagat Range, Lincoln County, Nevada: Part I. Introduction. Part II. Paleozoic and Cenozoic stratigraphy
This report defines and describes all exposed rock units in the Pahranagat Range, southeastern Nevada. The 600 square mile subject area, located in one of the most isolated regions of the United States, has not received ...