Bill Boberg - Academia.edu (original) (raw)
Papers by Bill Boberg
Earth Science Bulletin (WGA), 1981
1981 Wyoming Geological Association Guidebook, 32nd Annual Field Conference, 1981
No Abstract
The Lake Alice District, in Lincoln County, Wyoming, is one of a number of metal occurrences in t... more The Lake Alice District, in Lincoln County, Wyoming, is one of a number of metal occurrences in the Overthrust Belt of southwestern Wyoming. The metal occurrences are contained within the upper portions of the Triassic/Jurassic Nugget Sandstone and the lower portions of the overlying Jurassic Gypsum Spring Member of the Twin Creek Limestone. The Nugget Sandstone is the uppermost unit of a redbed clastic sequence. It is a texturally mature subarkose which was deposited in a prograding sandy shoreline environment. Sedimentary structures include horizontal parallel to nearly parallel laminated bedding, hummocky bedding, trough cross bedding and massive structureless sandstone. Minor bioturbation can be seen in the upper Nugget. The depositional environments include the swash zone, upper and lower shoreface, and backshore. The Gypsum Spring Member of the Twin Creek Limestone was deposited on a tidal flat. The lower Gypsum Spring consists of fine to very fine grained sandstones and silts...
The tertiary basins of Wyoming have been the focus of nearly 50 percent of the nationwide explora... more The tertiary basins of Wyoming have been the focus of nearly 50 percent of the nationwide exploration effort for uranium in the past few years. Uranium occurrences have been reported in 20 of the 23 counties in the state and from 34 different stratigraphic units ranging from Cambrian to Quaternary in age. Vein-type uranium mineralization in pre-Cambrian rocks also occurs within the state. Most production of uranium in the State comes from major deposits in fluvial sandstone of Paleocene and Eocene age. Major producing districts in the State are the Gas Hills, Shirley Basin, Crooks Gap and southern Powder River Basin. These districts have produced 20 percent of the uranium mined in the United States and contain 36 percent of the nation’s reserves known in 1975. Total potential resources of Wyoming as forecast by ERDA amount to 15% of the nation’s potential. The majority of exploratory activity in the State is directed toward sandstone-type deposits of early Tertiary age. These deposi...
A study of the water supply of the Paradise Valley Subdivision was completed in 1972. The quality... more A study of the water supply of the Paradise Valley Subdivision was completed in 1972. The quality of the water supply has apparently declined since the early 1960’s. The aquifer providing the water supply is the recent valley fill sediments, consisting largely of sands and gravels, of the North Platte River. A generally east-west paleovalley of the North Platte River has been cut into the Cretaceous Cody Shale along the north end of the subdivision and forms the major thickness of the aquifer for water supply development. The sewage plant for the subdivision lies over the paleochannel upstream from the well field. The well field is located very near a steeply sloping surface of Cody Shale between the well field and the river. Sulfate content in the water is apparently due to dissolution of gypsum in the Cody Shale by the ground water. Chloride buildup appears to be the result of the increasing chloride content of the sewage lagoon caused by heavy usage of water softeners in the subd...
Occurrences of uranium have been located in many scattered areas and varied geologic environments... more Occurrences of uranium have been located in many scattered areas and varied geologic environments in the State of Montana. These occurrences are as vein fillings, as sandstone-type deposits, in lignites or coals, within pegmatite dikes, or in the Permian Phosphoria Formation. Limited quantities of uranium ore have been produced from several small properties in the past, but total production has been small. Forecast shortages of uranium to supply the increasing numbers of nuclear power plants is spurring exploration. Several companies are currently exploring for sandstone-type uranium occurrences within the state. These exploration activities are regulated by the Montana Strip Mining and Reclamation Act which also includes coal.
Wells are drilled to gain subsurface information and to discover hydrocarbons. The better the qua... more Wells are drilled to gain subsurface information and to discover hydrocarbons. The better the quality of data acquired during and after the drilling operation, the better the interpretations. The data gathered at the well site by the mud logger and the well-site geologist, coupled with wireline geophysical logs, are separate packages of data. These are usually reviewed and evaluated separately, with a variety of summaries prepared to improve understanding of the overall well data. Computer-automated log plotting allows the collation of a variety of data from several sources into a single summary log that graphically presented the well data. This type of presentation allows a better understanding of the various well data and may also distinguish previously unrecognized relationships. Logger + software by Rockware is a flexible log-plotting program for preparing detailed graphic logs daily at the well site. These logs may later be combined with geophysical log data for a final summary...
Economic Geology, 1971
... In the United States the major rivers east of the Mississippi all contain less than 1 ppb ura... more ... In the United States the major rivers east of the Mississippi all contain less than 1 ppb uranium, and the Mississippi River itself contained a maximum of 1.3 ppb at Vicksburg, Mississippi during the water year 1960-61 (Mallory, Johnson, and Scott, 1969). ...
The Challenge of Finding New Mineral ResourcesGlobal Metallogeny, Innovative Exploration, and New Discoveries
Earth Science Bulletin (WGA), 1981
1981 Wyoming Geological Association Guidebook, 32nd Annual Field Conference, 1981
No Abstract
The Lake Alice District, in Lincoln County, Wyoming, is one of a number of metal occurrences in t... more The Lake Alice District, in Lincoln County, Wyoming, is one of a number of metal occurrences in the Overthrust Belt of southwestern Wyoming. The metal occurrences are contained within the upper portions of the Triassic/Jurassic Nugget Sandstone and the lower portions of the overlying Jurassic Gypsum Spring Member of the Twin Creek Limestone. The Nugget Sandstone is the uppermost unit of a redbed clastic sequence. It is a texturally mature subarkose which was deposited in a prograding sandy shoreline environment. Sedimentary structures include horizontal parallel to nearly parallel laminated bedding, hummocky bedding, trough cross bedding and massive structureless sandstone. Minor bioturbation can be seen in the upper Nugget. The depositional environments include the swash zone, upper and lower shoreface, and backshore. The Gypsum Spring Member of the Twin Creek Limestone was deposited on a tidal flat. The lower Gypsum Spring consists of fine to very fine grained sandstones and silts...
The tertiary basins of Wyoming have been the focus of nearly 50 percent of the nationwide explora... more The tertiary basins of Wyoming have been the focus of nearly 50 percent of the nationwide exploration effort for uranium in the past few years. Uranium occurrences have been reported in 20 of the 23 counties in the state and from 34 different stratigraphic units ranging from Cambrian to Quaternary in age. Vein-type uranium mineralization in pre-Cambrian rocks also occurs within the state. Most production of uranium in the State comes from major deposits in fluvial sandstone of Paleocene and Eocene age. Major producing districts in the State are the Gas Hills, Shirley Basin, Crooks Gap and southern Powder River Basin. These districts have produced 20 percent of the uranium mined in the United States and contain 36 percent of the nation’s reserves known in 1975. Total potential resources of Wyoming as forecast by ERDA amount to 15% of the nation’s potential. The majority of exploratory activity in the State is directed toward sandstone-type deposits of early Tertiary age. These deposi...
A study of the water supply of the Paradise Valley Subdivision was completed in 1972. The quality... more A study of the water supply of the Paradise Valley Subdivision was completed in 1972. The quality of the water supply has apparently declined since the early 1960’s. The aquifer providing the water supply is the recent valley fill sediments, consisting largely of sands and gravels, of the North Platte River. A generally east-west paleovalley of the North Platte River has been cut into the Cretaceous Cody Shale along the north end of the subdivision and forms the major thickness of the aquifer for water supply development. The sewage plant for the subdivision lies over the paleochannel upstream from the well field. The well field is located very near a steeply sloping surface of Cody Shale between the well field and the river. Sulfate content in the water is apparently due to dissolution of gypsum in the Cody Shale by the ground water. Chloride buildup appears to be the result of the increasing chloride content of the sewage lagoon caused by heavy usage of water softeners in the subd...
Occurrences of uranium have been located in many scattered areas and varied geologic environments... more Occurrences of uranium have been located in many scattered areas and varied geologic environments in the State of Montana. These occurrences are as vein fillings, as sandstone-type deposits, in lignites or coals, within pegmatite dikes, or in the Permian Phosphoria Formation. Limited quantities of uranium ore have been produced from several small properties in the past, but total production has been small. Forecast shortages of uranium to supply the increasing numbers of nuclear power plants is spurring exploration. Several companies are currently exploring for sandstone-type uranium occurrences within the state. These exploration activities are regulated by the Montana Strip Mining and Reclamation Act which also includes coal.
Wells are drilled to gain subsurface information and to discover hydrocarbons. The better the qua... more Wells are drilled to gain subsurface information and to discover hydrocarbons. The better the quality of data acquired during and after the drilling operation, the better the interpretations. The data gathered at the well site by the mud logger and the well-site geologist, coupled with wireline geophysical logs, are separate packages of data. These are usually reviewed and evaluated separately, with a variety of summaries prepared to improve understanding of the overall well data. Computer-automated log plotting allows the collation of a variety of data from several sources into a single summary log that graphically presented the well data. This type of presentation allows a better understanding of the various well data and may also distinguish previously unrecognized relationships. Logger + software by Rockware is a flexible log-plotting program for preparing detailed graphic logs daily at the well site. These logs may later be combined with geophysical log data for a final summary...
Economic Geology, 1971
... In the United States the major rivers east of the Mississippi all contain less than 1 ppb ura... more ... In the United States the major rivers east of the Mississippi all contain less than 1 ppb uranium, and the Mississippi River itself contained a maximum of 1.3 ppb at Vicksburg, Mississippi during the water year 1960-61 (Mallory, Johnson, and Scott, 1969). ...
The Challenge of Finding New Mineral ResourcesGlobal Metallogeny, Innovative Exploration, and New Discoveries