From introduction: The goal of this basin analysis study is to reconstruct the fluvial depositional system of the upper part of the Pennsylvanian and Permian Maroon Formation in the Eagle basin, northwest Colorado.

From summary: In this report the area studied is referred to as the "wilderness study area" or the "study area". Investigations of mineral occurrences in and near the wilderness study area during 1984 and 1985 indicated high mineral resource potential for undiscovered deposits of coal, moderate potential of oil shale and natural gas, low potential for oil, and identified resources of claystone, shale, and sand.

From summary: This report includes field investigations to evaluate the mineral resource potential of the Honeycomb Buttes were conducted during the summer of 1984. Geologic mapping, geochemical sampling, geophysical surveys, stratigraphic and sedimentological studies, and surveys of prospects delineated areas of very low grade placer gold deposits in terrace gravels and low and moderate resource potential for additional similar undiscovered placer gold deposits, low and moderate resource potential for small uranium deposits, moderate resource potential for accumulation of oil and gas, and low resource potential for coal and oil shale.

Abstract: The ammonite family Acanthoceratidae de Grossouvre is represented in the Western Interior region by many genera. Species and subspecies of Calycoceras, Acanthoceras, Cunningtoniceras, Plesiacanthoceras, and Protacanthoceras are important guide fossils to narrow zones of middle Cenomanian age in southeastern Montana, northeastern Wyoming, western South Dakota, and central Kansas. In this region, the ammonite zonation through most of the middle Cenomanian seems to be, from oldest to youngest, a zone of Acanthoceras muldoonense Cobban and Scott, a zone of Acanthoceras bellense Adkins and Calycoceras leonense (Adkins), a zone of Cunningtoniceras amphibolum (Morrow) with subzones of C. amphibolum amphibolum and C. amphibolum fallense (n. subsp.), and a zone of Plesiacanthoceras wyomingense (Reagan). In this report, Acanthoceras muldoonense, A. bellense, and Calycoceras leonense are described from the northern part of the Western Interior for the first time. Cunningtoniceras amphibolum, originally assigned to Acanthoceras, is described in more detail and divided into the nominate subspecies and the new subspecies C. amphibolum fallense. The earliest whorls of Plesiacanthoceras wyomingense, previously unknown, are described as well as all the later growth stages. The small genus, Protacanthoceras, is represented by several new species and one new subspecies. Protacanthoceras fisheri is found in the zone of Acanthoceras …

Abstract: Rainfall simulation studies were conducted in conjunction with the Denver Regional Urban Runoff Program to: (1) Compare runoff quantity and quality from two different intensities of rainfall on impervious plots having identical antecedent conditions, (2) document a first flush of constituent loads in runoff from 1,000-square-foot streetsurface plots, (3) compare runoff characteristics from a street surface subjected to simulated rainfall with those from a 69-acre urban basin of mixed land use subjected to natural rainfall, (4) perform statistical analysis of constituent loads in the runoff with several independent variables, and (5) compare the quantity and quality of runoff from 400-square-foot plots of native grasses used for pasture and subjected to simulated rainfall with that from a 405-acre basin covered with native grasses used for pasture and sub-jected to natural rainfall. The rainfall simulations conducted on the street surface showed that higher intensity simulated rainfall produced a higher percentage of runoff than lower intensity rainfall. A first flush of constituent loads occurred for most constituents in the runoff from most rainfall simulations on the street surface; however, a first flush did not occur in the runoff from simulated rainfall on the pasture. The event mean concentrations of constituents in the …

This is a map of the mineral resource potential of the Oregon Buttes Wilderness Study Area, Sweetwater County, Wyoming.

From abstract: The Fort Piute Wilderness Study Area (CDCA-267) is in northeastern San Bernardino County, California, near the boundary between California and Nevada. Mineral surveys were requested for 31,371 acres of the Fort Piute Wilderness Study Area. In this report the area studied is referred to as "the study area". Examination of mines and prospects in the area was accomplished by the U.S. Bureau of Mines in 1981 and 1982. Field investigations of the area were carried out by the U.S. Geological Survey in 1983 and 1985. No mines or prospects, few mining claims, and no identified resources are located within the wilderness study area. Moderate and low potential for gold resources appears limited to outcrops of gneiss and granite exposed along the eastern side of the Piute Range. Available information indicates that there is no potential for energy resources, including oil and gas, uranium, or geothermal, in the study area.

From abstract: A mineral resource survey of the Ruby Mountains Wilderness Study Area (MT-076-001) was made in 1984- 85. Thirty-two million tons of subeconomic mineral resources that average 21 percent iron occur in the Kelly iron deposit and constitute an identified resource adjacent to the southeasternmost edge of the study area. Moderate and high mineral resource potential for talc deposits occur within a large body of Archean (see geologic time chart in appendix) marble in the central part of the study area (fig. 1). The study area has a low mineral resource potential for uranium and for oil and gas sources. No phosphate deposits exist in the study area.

From introduction: This report describes the character, origin, age, and extent of deposits of pyroclastic flows and lahars that were formed at Mount St. Helens before 1980, and their stratigraphic relations to other rocks and deposits of volcanic and glacial origin.

From summary:A mineral resource survey of a 10,610-acre part of the Blacktail Mountains Wilderness Study Area (MT-076- 002) was conducted in 1984-85. Identified subeconomic resources of barite exist in the area at the northernmost boundary, and a zone partly within the area along the northeastern boundary has a moderate mineral resource potential for silver and barite, and associated gold, copper, lead, and zinc. No producing mines occur in or adjacent to the area. The area lies within a region that is rated as having moderate energy resource potential for oil and for gas.

From abstract: The Mount Grafton Wilderness Study Area (NV- 040-169) is in a remote area of the Schell Creek Range, Nevada. In 1984 and 1985 the U.S. Geological Survey and the U.S. Bureau of Mines evaluated the identified mineral resources and mineral resource potential of approximately 30,115 acres of the study area at the request of the U.S. Bureau of Land Management. The study area contains identified low-grade resources of zinc and tungsten. The study area has a low potential for oil and gas, uranium and thorium, and geothermal and clay resources.

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.

Abstract: The Farlin Creek Wilderness Study Area (MT-076-034) is in the south-central Pioneer Mountains about 24 miles west-northwest of Dillon, Beaverhead County, southwestern Montana. At the request of the U.S. Bureau of Land Management, an area of 610 acres (less than 1 square mile) was investigated by the U.S. Geological Survey and the U.S. Bureau of Mines in 1984. The area contains no mines or prospects, no visible evidence of mineralization, and no identified mineral resources. Geophysical evidence suggests that three parts of the area have moderate mineral resource potential for undiscovered resources of molybdenum. The entire area has a low resource potential for all other metals and for all nonmetals, fuels, and geothermal energy.

From summary: During 1983 and 1984, the U.S. Geological Survey and the U.S. Bureau of Mines conducted field investigations to assess the mineral resource potential and appraise the identified resources of a part of the Far South Egans (NV-040-172) Wilderness Study Area. The area studied encompasses about 63.5 mi2 (square miles) (42,316 acres) in Lincoln and Nye Counties, Nevada, and is in the southern part of the Egan Range of east-central Nevada.

From summary: The Parsnip Peak (NV-040-206) Wilderness Study Area in Lincoln County, Nevada, is 10 mi (miles) northeast of the small mining town of Pioche. A mineral resource study of the area was completed in the summers of 1984 and 1985 by the U.S. Geological Survey and U.S. Bureau of Mines. A small area of limestone and dolomite on the western side of the wilderness study area has high mineral resource potential for arsenic, antimony, mercury, and gold. The rest of the Parsnip Peak Wilderness Study Area has low mineral resource potential for metals, oil and gas, coal, and geothermal energy.

From summary: The USGS (U.S. Geological Survey) and the USBM (U.S. Bureau of Mines) studied the mineral resource potential of 50,499 acres of the 61,137-acre Weepah Spring Wilderness Study Area (NV-040-246), Lincoln and Nye Counties, Nev., at the request of the BLM (U.S. Bureau of Land Management). In this report, the area studied is referred to as the "wilderness study area" or the "study area." Field studies of the area were conducted during summer 1984 by USBM geologists and during spring 1984 and fall 1985 by USGS geologists, geochemists, and geophysicists.

A report about sedimentary processes on the southern margin of Georges Bank which is based on observations from research submersibles of bottom features, on size analyses of sediment samples, and on measurements of current strength and flow direction.

A report which presents the results of the processing and analysis of commercial satellite image data acquired over the nuclear power plant at Chernobyl in the Soviet Ukraine.

A report about thermally metamorphosed rocks under Southern Baranof Island. It represents one of the largest regions of metamorphosed rock.

The following report summarizes the petrographical, chemical, and geological history of the Yantarni Volcano in the Aleutian volcanic arc of the Alaskan Peninsula.

From preface: "This report is a compilation of the significant metalliferous lode deposits and placer districts of Alaska, and is a comprehensive data base for a companion article on the metallogenesis and major mineral deposits of Alaska that will be published in the volume of Alaskan geology for the Decade of North American Geology (DNAG) by the Geological Society of America."

The following publication presents the results of a multifaceted study of the geology of the coastal plain and adjacent areas of the Arctic National Wildlife Refuge (ANWR) of northeastern Alaska and estimates of its yet to be discovered oil and gas resources. This report provides technical geologic and assessment details not found in the congressional report on the ANWR 1002 area (Clough and others, 1987).