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- Laccolith Complexes of Southeastern Utah: Time of Emplacement and Tectonic Setting - Workshop Proceedings
- This report summarizes much of the materials presented at the workshop and provides an extensive list of selected references pertaining to geochronology and tectonics of the Colorado Plateau to facilitate further research.
- Guide to the Volcanoes of the Western Wrangell Mountains, Alaska
- A report that describes the geologic history of various landscapes viewed from major roadways in and around Wrangell-St. Elias National Park and Preserve.
- Imaging the Sea Floor
- A report that provides examples of 1990's sonar advances that help map the sea floor. Two specific devices are focused on, these are the Sea Beam bathymetric mapping system and the GLORIA sidescan-sonar imaging system.
- The Crummies Member (New Name) of the Pennsylvanian Breathitt Formation, Eastern Kentucky—Its Distribution and Biostratigraphy
- A report about the Crummies Member of the Breathitt Formation which is a marine unit archaically called the Cannelton Limestone located in the Kanawha River valley of West Virginia.
- Monitoring of Thermal Activity in Southwestern Yellowstone National Park and Vicinity, 1980-1993
- A paper about thermal activity in Yellowstone National Park. It assesses impacts of geothermal, oil, gas, and other types of development adjacent to the park. It also relates these changes to magma under the park.
- Gold and Other Minor Elements Associated with the Hot Springs and Geysers of Yellowstone National Park, Wyoming, Supplemented with Data from Steamboat Springs, Nevada
- Report providing information from 125 samples of rock studies, analyzed by using a emission-spectographic method. The studies take place in Yellowstone National Park and Steamboat Springs, Nevada.
- Late Mesozoic and Cenozoic Stratigraphic and Structural Framework Near Hopewell, Virginia
- From introduction: This study was undertaken as part of the U.S. Geological Survey's (USGS) Reactor Hazards Reduction Program. One of the goals of this program is to contribute to the growing recognition and cataloging of Cenozoic faults in the Atlantic Coastal Plain. Once the faults are recognized and cataloged, the stress field and resulting tectonic framework that produced these faults can be determined. This study defines the stratigraphic and structural relationships of a tectonically anomalous area in the vicinity of Hopewell, Va.
- Gold in the Black Pine Mining District, Southeast Cassia County, Idaho
- A report about base and precious metals in the Black Pine mining district in the Black Pine Mountains . Two different types of mineral deposits are identified.
- The Role of Clays in Fixing Lithium
- A report about lithium inside of clay minerals. Lithium can be present in clays as impurities, inclusions, lattice cavities, or by isomorphous substitution.
- Chromite Deposits in the Seiad Valley and Scott Bar Quadrangles, Siskiyou County, California
- A report about chromite deposits in the Seiad Creek and McGuffy Creek districts and the Ladd mine, Siskiyou County, California, that occur in dunite-peridotite bodies that are part of an ophiolitic sequence in the western Paleozoic and Triassic belt of the Klamath Mountains.
- Late Cenozoic Stratigraphic Units, Northeastern San Joaquin Valley, California
- The following report discusses the data and relationships between Cenozoic units in northeastern San Joaquin Valley, California. Additionally, this report analyzes the stratigraphic characterizations of the soils in the region.
- Mineral Resources of the Cranberry Wilderness Study Area, Webster and Pocahontas Counties, West Virginia
- The following report discusses the results of the mineral studies of national forest land in Cranberry Wilderness Study Area, Webster and Pocahontas Counties, West Virginia.
- Mineral Resources of the Lone Peak Wilderness Study Area, Utah and Salt Lake Counties, Utah
- The following report is an evaluation of the mineral potential of the Lone Peak Wilderness study area, Utah.
- Stratigraphic Nomenclature of the Central Santa Monica Mountains, Los Angeles County, California
- From abstract: The stratigraphic nomenclature of the central Santa Monica Mountains is revised to conform with present knowledge of the age, distribution, and stratigraphic relations of about 35 bedrock units. The revision is based on 1:12,000-scale mapping of the entire stratigraphic sequence and its facies, the position and stage assignment of abundant fossils, and contact relations.
- Revisions in Stratigraphic Nomenclature of the Columbia River Basalt Group
- From abstract: New stratigraphic nomenclature for units within the Columbia River Basalt Group is introduced to revise and expand that currently in use; it is based largely on subdivisions made informally by T. L. Wright, M. J. Grolier, and D. A. Swanson in 1973. The Yakima Basalt is raised to subgroup status, and three formations-the Grande Ronde Basalt, Wanapum Basalt, and Saddle Mountains Basalt, in order of decreasing age-are defined within it.
- Bibliography of the Geology and Hydrology of the Albuquerque Greater Urban Area, Bernalillo and Parts of Sandoval, Santa Fe, Socorro, Torrance, and Valencia Counties, New Mexico
- A bibliography which contains over 500 references for the Albuquerque Greater Urban Area (AGUA). The intent is to be comprehensive in scope in the areas of hydrology and geology as well as introductory in other interdisciplinary areas.
- A Manual on Fire Assaying and Determination of the Noble Metals in Geological Materials
- A report that provides details about fire assaying techniques to separate and concentrate the noble metals from many varieties of samples.
- Mineral Resources of the Laramie Peak Study Area, Albany and Converse Counties, Wyoming
- The following report is an evaluation of the mineral potential of the Laramie Peak area, Wyoming.
- Nomenclature of Precambrian Rocks in Colorado
- Abstract: "The Precambrian rocks of Colorado consist of a metaphoric complex more than 1,700 million years in age, three groups of igneous rocks about 1,700, 1,400, and 1,000 million years in age, here designated informal age groups, and two areally restricted units of sedimentary rocks, one between 1,400 and 1,700 million years in age and one between 950 and 1,400 million years. A systematic nomenclature for many of the rocks does not exist, but the present state of knowledge will permit establishment of a comprehensive nomenclature. Numerous formal names that have been applied to elements of the Precambrian assemblage are appraised and classified in a table, and eight names are abandoned."
- Stewart Gulch Tongue—A New Tongue of the Eocene Green River Formation, Piceance Creek Basin, Colorado
- A report about mapping in the northern and central parts of the Piceance Creek basin of northwestern Colorado where several relatively thin dominantly marlstone units tongue northward into the Eocene Uinta Formation.
- Changes in Stratigraphic Nomenclature by the U.S. Geological Survey, 1975
- The following document provides a list of publications about geology which relates to nomenclatural changes.
- The Columbia River Basalt Group in the Spokane Quadrangle, Washington, Idaho, and Montana
- This report studies the several aspects of the basalts in the Columbia River Basalt Group in the Spokane quadrangle, Washington, Idaho, and Montana.
- Changes in Stratigraphic Nomenclature by the U.S. Geological Survey, 1973
- A paper which provides a list of nomenclatural changes. The list also contains publications, the authors, and the names of the reports.
- Changes in Stratigraphic Nomenclature by the U.S. Geological Survey, 1974
- A list of stratigraphic names adopted, revised, reinstated, and abandoned. The nomenclatural changes pertain to geology.
- Coughs Creek Tongue--A New Tongue of the Eocene Green River Formation, Piceance Creek Basin, Colorado
- A report about the Coughs Creek Tongue which is a sequence of light-gray marlstone, locally containing beds of sandstone and siltstone, in the upper part of the Green River Formation.
- Index of Generic Names of Fossil Plants 1966-1973
- An index of names of new fossil plant genera found in literature between 1966 and 1973 which is now included in the pendium Index of Paleobotany.
- Changes in Stratigraphic Nomenclature by the U.S. Geological Survey, 1972
- A list of stratigraphic names which are adopted, revised, reinstated, or abandoned are listed. The scheme of the list has been devised simply to facilitate depiction and analyses of the Precambrain history of the United States.
- Coal Resources of the United States
- A report about the United States's coal supply. The U.S. has 25 percent of the world's identified coal resources and about 20 percent of the world's estimated total coal resources.
- Silurian, Devonian, and Mississippian Formations of the Funeral Mountains in the Ryan Quadrangle, Death Valley Region, California
- From abstract: A composite section of the Silurian, Devonian, and Mississippian formations in the Funeral Mountains between Death Valley and Amargosa Valley is about 4,700 feet thick. The formations are in the top of a concordant, complexly faulted sequence that is about 25,000 feet thick from the highest part of the Precambrian to the Upper Mississippian. The Silurian and younger formations consist of marine dolomite and limestone that contain some regionally characteristic cherty and siliceous clastic beds as well as widely spaced fossiliferous zones.
- Stratigraphic Nomenclature of the Thirtynine Mile Volcanic Field, Central Colorado
- A report about the geology, composition, and stratigraphic nomenclature of the thirtynine mile volcanic field in central Colorado.
- New Cretaceous Formations in the Western Wyoming Thrust Belt
- A report about six cretaceous rock formations in the western Wyoming thrust belt.
- Bibliography and Index of U.S. Geological Survey Publications Relating to Coal, 1882-1970
- A bibliography that lists about 1,300 U.S. Geological Survey publications related to coal and published prior to January 1, 1971.
- Geology and Mineral Resources of the Northern Part of the North Cascades National Park, Washington
- Introduction: This report was started as part of a study of the North Cascade Primitive Area, an area of about 830,000 acres, which adjoined the Canadian border on the north and which extended from Mount Shuksan on the west to Rock Mountain on the east. In the fall of 1968, Public Law 90-544, 90th Cong., reclassified the North Cascade Primitive Area and certain other national forest lands and created the North Cascades National Park, the Ross Lake National Recreation Area, and the Pasayten Wilderness. Ross Lake National Recreational Area, a corridor 21/2-4 miles wide along the Skagit River and its dammed portions, Ross, Diablo, and Gorge Lakes, separates the park into two parts and separates the northern part of the park from the Pasayten Wilderness. The present study concerns those parts of North Cascades National Park and the Ross Lake National Recreation Area that are north of Skagit River and west of Ross Lake (fig. 1), as well as part of the Mount Baker National Forest west of the park (pl. 2).
- Clinoptilolite of Possible Economic Value in Sedimentary Deposits of the Conterminous United States
- A report about clinoptilolite. It is a common zeolite, it is potentially valuable for many industrial and agricultural processes, and it might be useful in controlling water pollution by removing ammonia from wastewater.
- The Eagle Valley Evaporite, Northwest Colorado--A Regional Synthesis
- The following report presents a regional study of the extent, thickness, lithology, stratigraphic relations, age, depositional environment, and tectonic history of thick sulfate deposits and associated salts of sodium and potassium.
- Mineral Resources of the Glacier Primitive Area, Wyoming
- The following report follows a mineral survey of the Glacier Primitive Area and adjoining area in Wyoming, that was made in 1968 and 1969.
- Selected Annotated Bibliography on the Geochemistry of Gold
- A bibliography of about 200 selected references which contain information on source materials dealing with the genesis and geochemistry of gold and geochemical prospecting for gold deposits.
- Stratigraphy of the State Bridge Formation in the Woody Creek Quadrangle, Pitkin and Eagle Counties, Colorado
- A report about the lithologic units within a red-bed sequence that help to interpret the history and structure of the Woody Creek quadrangle, west-central Colorado.
- Changes in Stratigraphic Nomenclature by the U.S. Geological Survey, 1969
- A report about the stratigraphic nomenclature changes in geology.
- Index of Generic Names of Fossil Plants, 1820-1965
- An index of fossil names between 1820 and 1965. Diatoms, spores, and pollen are excluded from this index.
- Mineralogy and Geochemistry of Some Belt Rocks, Montana and Idaho
- A report which compares 20,000 feet of Belt rocks in the Mission Mountains Primitive Area in Montana with 40,000 feet of Belt rocks in the Pend Oreille area in Idaho and Montana.
- Surficial Geology of the Louisville Quadrangle Colorado
- A report about superficial deposits in the Louisville quadrangle, Colorado. They indicate early Pleistocene valley incisions bellow pediments and late Pleistocene valley filling and upland eolian deposition.
- Ancient Lavas in Shenandoah National Park Near Luray, Virginia
- Abstract: In the Blue Ridge Province of northern Virginia, Maryland, and southern Pennsylvania, Lower Cambrian beds are underlain by a thick sequence of greenstone and interbedded sedimentary rocks known as the Catoctin Formation. An area near Luray, Va., was studied to determine the thickness of the formation, its relationship to overlying and underlying rocks, and the original nature of the lavas from which the Catoctin greenstone was derived. There the Catoctin Formation lies unconformably on granitic rocks. Its basal sedimentary layer ranges from a few inches to 150 feet in thickness and contains pebbles of underlying basement rocks. The erosion surface beneath the Catoctin is irregular, and in several places, hills as much as 1,000 feet high were buried beneath the Catoctin lavas. No important time break is indicated between the deposition of the Catoctin Formation and the overlying Cambrian sediments. The original Catoctin lavas were basaltic and were probably normal plateau basalts. Columnar joints, amygdules, sedimentary dikes, flow breccias, low-dipping primary joints, and other primary structures are well preserved.
- Gold Veins Near Great Falls, Maryland
- From abstract: Small deposits of native gold are present along an anastomosing system of quartz veins and shear zones just east of Great Falls, Montgomery County, Md. The deposits were discovered in 1861 and were worked sporadically until 1951, yielding more than 5,000 ounces of gold. The vein system and the principal veins within it strike a few degrees west of north, at an appreciable angle to foliation and fold axial planes in enclosing rocks of the Wissahickon Formation of late Precambrian (?) age. The veins cut granitic rocks of Devonian or pre-Devonian age and may be as young as Triassic. Further development of the deposits is unlikely under present economic conditions because of their generally low gold content and because much of the vein system lies on park property, but study of the Great Falls vein system may be useful in the search for similar deposits elsewhere in the Appalachian Piedmont.
- Pecos National Monument, New Mexico: Its Geologic Setting
- From introduction: The ruins of the pueblos and missions of Pecos lie on the east bank of Glorieta Creek near its junction with the Pecos River at the south end of the Sangre de Cristo Mountains in north-central New Mexico. Here the Pecos River and Glorieta Creek have formed a broad rolling valley in which the red adobe walls of the mission church stand as a striking monument to a historic past.
- Surficial Geology of Mount Rainier National Park, Washington
- From introduction: Much of the ground surface around Mount Rainier volcano is directly underlain by loose geologic deposits that veneer the hard rock formations. Examples of these deposits are sand and gravel bars along the rivers, ridges of loose rock debris beside the glaciers, and sloping aprons of rock fragments beneath almost every cliff. Even though they are generally thin and inconspicuous when compared with the rock formations, these surficial deposits are clues to geologic events that. have profoundly influenced the shape of the park's landscape. Thus, from the character and extent of glacial deposits one can judge the age and size of former glaciers that carved the cirques and deep canyons of the park; from the mudflows which streamed down nearly every valley one can infer the age and size of huge landslides of the past that helped determine Mount Rainier's present shape; and from the pumice deposits some of the volcano's recent eruptive activity can be reconstructed.
- Terrestrial Impact Structures—A Biography 1965-68
- A bibliography on impact structures by that supplements the U.S. Geological Survey Bulletin 1220 by citing literature published or reviewed since 1964.
- Copper Mosses as Indicators of Metal Concentrations
- A report that analyses samples of copper mosses and their substrates and compares these analyses with those published elsewhere.
- Construction of Pressure-Temperature Diagrams for Multicomponent Systems After the Method of Schreinemakers--A Geometric Approach
- A report about the Schreinemakers method and the creation of pressure temperature diagrams for multicomponent systems.
- Geology of the Northwest Quarter of the Anaconda Quadrangle, Deer Lodge County, Montana
- The following report presents the geology and mineral resources of part of the Anaconda quadrangle near Butte, Montana.