William F. Cannon
William (Bill) Cannon is a Scientist Emeritus with the USGS Geology, Energy & Minerals (GEM) Science Center in Reston, VA.
Science and Products
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Filter Total Items: 108
Revisions of stratigraphic nomenclature within the Keweenawan Supergroup of Northern Michigan. Geochemistry, petrography, and volcanology of rhyolites of the Portage Lake volcanics, Keweenaw Peninsula, Michigan
No abstract available.
Authors
William F. Cannon, Suzanne W. Nicholson
Speculations on the origin of the North American Midcontinent rift
The Midcontinent rift is an example of lithospheric extension and flood basalt volcanism induced when a new mantle plume arrived near the base of the lithosphere. Very large volumes of basaltic magma were generated and partly erupted before substantial lithospheric extension began. Volcanism continued, along with extension and deep rift subsidence, for the ensuing 15 m.y. Much of the basaltic magm
Authors
W. F. Cannon, W. J. Hinze
The Midcontinent rift in the Lake Superior region with emphasis on its geodynamic evolution
The Midcontinent rift is a Middle Proterozoic continental rift which records about 15 m.y. of extension, subsidence, and voluminous volcanism in the period 1109-1094 Ma in the central part of North America. During that time the crust was nearly totally separated and as much as 25 km of subaerial basalts accumulated in a deep central depression. Following extension and volcanism, a longer period of
Authors
W. F. Cannon
Metallogeny of the midcontinent rift system of North America
The 1.1 Ga Midcontinent rift system of North America is one of the world's major continental rifts and hosts a variety of mineral deposits. The rocks and mineral deposits of this 2000 km long rift are exposed only in the Lake Superior region. In the Lake Superior region, the rift cuts across Precambrian basement terranes ranging in age from ??? 1850 Ma to more than 3500 Ma. Where exposed, the rift
Authors
S. W. Nicholson, W. F. Cannon, K. J. Schulz
Deep crustal structure of the Precambrian basement beneath northern Lake Michigan, midcontinent North America
A deep seismic-reflection profile in northern Lake Michigan, midcontinent North America, provides a cross section of the crust across the 1850 Ma Penokean orogen, in which an Early Proterozoic island-arc complex was deformed between two converging Archean continental masses. The island-arc crust is about 40 km thick and has a few kilometres of intensely reflective rocks near its base, above which
Authors
W. F. Cannon, M. W. Lee, W. J. Hinze, K. J. Schulz, A.G. Green
Keweenaw hot spot: Geophysical evidence for a 1.1 Ga mantle plume beneath the Midcontinent Rift System
The Proterozoic Midcontinent Rift System of North America is remarkably similar to Phanerozoic rifted continental margins and flood basalt provinces. Like the younger analogues, the volcanism within this older rift can be explained by decompression melting and rapid extrusion of igneous material during lithospheric extension above a broad, asthenospheric, thermal anomaly which we call the Keweenaw
Authors
D. R. Hutchinson, R.S. White, W. F. Cannon, K. J. Schulz
The North American Midcontinent rift beneath Lake Superior from GLIMPCE seismic reflection profiling
The Midcontinent rift system is a 1.1-b.y.-old structure extending from Kansas, through the Lake Superior region, and into southern Michigan. The rift is filled with thick sequences of basaltic volcanic rocks and clastic sediments. For most of its extent it is buried beneath Paleozoic rocks but can be traced by its strong gravity and magnetic anomalies. Seismic reflection surveys by the Great Lake
Authors
W. F. Cannon
1986 GLIMPCE seismic reflection survey stacked data; Great Lakes region
No abstract available.
Authors
W. F. Agena, M. W. Lee, D. R. Hutchinson, John C. Behrendt, W. F. Cannon, A.G. Green
RAINBOW LAKE WILDERNESS AND FLYNN LAKE WILDERNESS STUDY AREA, WISCONSIN.
The Rainbow Lake Wilderness and Flynn Lake Wilderness study area in Wisconsin are contiguous and were studied as a unit. The rainbow Lake Wilderness contains a demonstrated resource of about 210,000 tons of commercial-quality peat in an area of substantiated peat resource potential. The Flynn Lake Wilderness study area contains a demonstrated resource of about 300,000 tons of commercial-quality pe
Authors
W. F. Cannon, Maynard L. Dunn
STURGEON RIVER WILDERNESS STUDY AREA, MICHIGAN.
A mineral survey of the Sturgeon River Wilderness study area, Michigan was made using geologic mapping and geochemical techniques. Previous geophysical studies were incorporated in the mineral assessment. The area and surroundings became the focus of intense uranium exploration as the result of major discoveries of a newly recognized type of deposit found in Australia and Canada in rocks very simi
Authors
W. F. Cannon, James J. Hill
ROUND LAKE WILDERNESS STUDY AREA, WISCONSIN.
The Round Lake Wilderness study area in Wisconsin was studied using geophysical and geochemical surveys, examination of a few bedrock exposures near the area (none are known within the area) and augering and testing of peat deposits. The only direct indication of potential mineral resource is about 760,000 tons of commercial quality peat contained in several bogs. Larger deposits of similar materi
Authors
W. F. Cannon, Bradford B. Williams
International Strategic Minerals Inventory summary report; manganese
Major world resources of manganese, a strategic mineral commodity, are described in this summary report of information in the International Strategic Minerals Inventory {ISMI). ISMI is a cooperative data-collection effort of earth-science and mineral-resource agencies in Australia, Canada, the Federal Republic of Germany, the Republic of South Africa, and the United States of America. This report,
Authors
John H. DeYoung,, David M. Sutphin, William F. Cannon
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Filter Total Items: 15
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Filter Total Items: 108
Revisions of stratigraphic nomenclature within the Keweenawan Supergroup of Northern Michigan. Geochemistry, petrography, and volcanology of rhyolites of the Portage Lake volcanics, Keweenaw Peninsula, Michigan
No abstract available.AuthorsWilliam F. Cannon, Suzanne W. NicholsonSpeculations on the origin of the North American Midcontinent rift
The Midcontinent rift is an example of lithospheric extension and flood basalt volcanism induced when a new mantle plume arrived near the base of the lithosphere. Very large volumes of basaltic magma were generated and partly erupted before substantial lithospheric extension began. Volcanism continued, along with extension and deep rift subsidence, for the ensuing 15 m.y. Much of the basaltic magmAuthorsW. F. Cannon, W. J. HinzeThe Midcontinent rift in the Lake Superior region with emphasis on its geodynamic evolution
The Midcontinent rift is a Middle Proterozoic continental rift which records about 15 m.y. of extension, subsidence, and voluminous volcanism in the period 1109-1094 Ma in the central part of North America. During that time the crust was nearly totally separated and as much as 25 km of subaerial basalts accumulated in a deep central depression. Following extension and volcanism, a longer period ofAuthorsW. F. CannonMetallogeny of the midcontinent rift system of North America
The 1.1 Ga Midcontinent rift system of North America is one of the world's major continental rifts and hosts a variety of mineral deposits. The rocks and mineral deposits of this 2000 km long rift are exposed only in the Lake Superior region. In the Lake Superior region, the rift cuts across Precambrian basement terranes ranging in age from ??? 1850 Ma to more than 3500 Ma. Where exposed, the riftAuthorsS. W. Nicholson, W. F. Cannon, K. J. SchulzDeep crustal structure of the Precambrian basement beneath northern Lake Michigan, midcontinent North America
A deep seismic-reflection profile in northern Lake Michigan, midcontinent North America, provides a cross section of the crust across the 1850 Ma Penokean orogen, in which an Early Proterozoic island-arc complex was deformed between two converging Archean continental masses. The island-arc crust is about 40 km thick and has a few kilometres of intensely reflective rocks near its base, above whichAuthorsW. F. Cannon, M. W. Lee, W. J. Hinze, K. J. Schulz, A.G. GreenKeweenaw hot spot: Geophysical evidence for a 1.1 Ga mantle plume beneath the Midcontinent Rift System
The Proterozoic Midcontinent Rift System of North America is remarkably similar to Phanerozoic rifted continental margins and flood basalt provinces. Like the younger analogues, the volcanism within this older rift can be explained by decompression melting and rapid extrusion of igneous material during lithospheric extension above a broad, asthenospheric, thermal anomaly which we call the KeweenawAuthorsD. R. Hutchinson, R.S. White, W. F. Cannon, K. J. SchulzThe North American Midcontinent rift beneath Lake Superior from GLIMPCE seismic reflection profiling
The Midcontinent rift system is a 1.1-b.y.-old structure extending from Kansas, through the Lake Superior region, and into southern Michigan. The rift is filled with thick sequences of basaltic volcanic rocks and clastic sediments. For most of its extent it is buried beneath Paleozoic rocks but can be traced by its strong gravity and magnetic anomalies. Seismic reflection surveys by the Great LakeAuthorsW. F. Cannon1986 GLIMPCE seismic reflection survey stacked data; Great Lakes region
No abstract available.AuthorsW. F. Agena, M. W. Lee, D. R. Hutchinson, John C. Behrendt, W. F. Cannon, A.G. GreenRAINBOW LAKE WILDERNESS AND FLYNN LAKE WILDERNESS STUDY AREA, WISCONSIN.
The Rainbow Lake Wilderness and Flynn Lake Wilderness study area in Wisconsin are contiguous and were studied as a unit. The rainbow Lake Wilderness contains a demonstrated resource of about 210,000 tons of commercial-quality peat in an area of substantiated peat resource potential. The Flynn Lake Wilderness study area contains a demonstrated resource of about 300,000 tons of commercial-quality peAuthorsW. F. Cannon, Maynard L. DunnSTURGEON RIVER WILDERNESS STUDY AREA, MICHIGAN.
A mineral survey of the Sturgeon River Wilderness study area, Michigan was made using geologic mapping and geochemical techniques. Previous geophysical studies were incorporated in the mineral assessment. The area and surroundings became the focus of intense uranium exploration as the result of major discoveries of a newly recognized type of deposit found in Australia and Canada in rocks very simiAuthorsW. F. Cannon, James J. HillROUND LAKE WILDERNESS STUDY AREA, WISCONSIN.
The Round Lake Wilderness study area in Wisconsin was studied using geophysical and geochemical surveys, examination of a few bedrock exposures near the area (none are known within the area) and augering and testing of peat deposits. The only direct indication of potential mineral resource is about 760,000 tons of commercial quality peat contained in several bogs. Larger deposits of similar materiAuthorsW. F. Cannon, Bradford B. WilliamsInternational Strategic Minerals Inventory summary report; manganese
Major world resources of manganese, a strategic mineral commodity, are described in this summary report of information in the International Strategic Minerals Inventory {ISMI). ISMI is a cooperative data-collection effort of earth-science and mineral-resource agencies in Australia, Canada, the Federal Republic of Germany, the Republic of South Africa, and the United States of America. This report,AuthorsJohn H. DeYoung,, David M. Sutphin, William F. Cannon