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
Filter Total Items: 15
Filter Total Items: 107
Variations in the reflectivity of the moho transition zone beneath the Midcontinent Rift System of North America: results from true amplitude analysis of GLIMPCE data Variations in the reflectivity of the moho transition zone beneath the Midcontinent Rift System of North America: results from true amplitude analysis of GLIMPCE data
True amplitude processing of The Great Lakes International Multidisciplinary Program on Crustal Evolution seismic reflection data from the Midcontinent Rift System of North America shows large differences in the reflectivity of the Moho transition zone beneath the axial rift, beneath the rift flanks, and outside of the rift. The Moho reflection from the axial rift has a discontinuous...
Authors
Deborah R. Hutchinson, Myung W. Lee, John C. Behrendt, William F. Cannon, Adrian G. Mann
Speculations on the origin of the North American Midcontinent rift 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...
Authors
W.F. Cannon, W. J. Hinze
Geology of Keweenawan Supergroup Rocks near the Porcupine Mountains, Ontonagon and Gogebic Counties, Michigan Geology of Keweenawan Supergroup Rocks near the Porcupine Mountains, Ontonagon and Gogebic Counties, Michigan
This field trip examines the geology of rocks of the Keweenawan Supergroup (1 .1 Ga) and related intrusive rocks of the Midcontinent rift system (MRS) in the western part of the northern peninsula of Michigan. The combination of stops includes all formations of the Keweenawan Supergroup in this region. Examination of all described localities requires more than a single day and...
Authors
William F. Cannon, Suzanne W. Nicholson, Cheryl A. Hedgman, Laurel G. Woodruff, Klaus J. Schul
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 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
Metallogeny of the midcontinent rift system of North America 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...
Authors
S. W. Nicholson, W.F. Cannon, K. J. Schulz
The Midcontinent rift in the Lake Superior region with emphasis on its geodynamic evolution 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...
Authors
W.F. Cannon
Deep crustal structure of the Precambrian basement beneath northern Lake Michigan, midcontinent North America 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...
Authors
W.F. Cannon, Myung W. Lee, W. J. Hinze, K. J. Schulz, Alan G. Green
Keweenaw hot spot: Geophysical evidence for a 1.1 Ga mantle plume beneath the Midcontinent Rift System 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...
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 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. The rocks of the rift system are...
Authors
W.F. Cannon, Alan G. Green, D. R. Hutchinson, Myung W. Lee, Bernd Milkereit, John C. Behrendt, Henry C. Halls, J.C. Green, Albert B. Dickas, G. B. Morey, Richard Sutcliffe, C. Spencer
1986 GLIMPCE seismic reflection survey stacked data; Great Lakes region 1986 GLIMPCE seismic reflection survey stacked data; Great Lakes region
No abstract available.
Authors
Warren F. Agena, Myung W. Lee, D. R. Hutchinson, John C. Behrendt, W.F. Cannon, Alan G. Green
International Strategic Minerals Inventory summary report; manganese 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...
Authors
DeYoung, David M. Sutphin, William F. Cannon
Paleoclimate and mineral deposits Paleoclimate and mineral deposits
No abstract available.
Authors
Thomas M. Cronin, William F. Cannon, Richard Z. Poore
Science and Products
Filter Total Items: 15
Filter Total Items: 107
Variations in the reflectivity of the moho transition zone beneath the Midcontinent Rift System of North America: results from true amplitude analysis of GLIMPCE data Variations in the reflectivity of the moho transition zone beneath the Midcontinent Rift System of North America: results from true amplitude analysis of GLIMPCE data
True amplitude processing of The Great Lakes International Multidisciplinary Program on Crustal Evolution seismic reflection data from the Midcontinent Rift System of North America shows large differences in the reflectivity of the Moho transition zone beneath the axial rift, beneath the rift flanks, and outside of the rift. The Moho reflection from the axial rift has a discontinuous...
Authors
Deborah R. Hutchinson, Myung W. Lee, John C. Behrendt, William F. Cannon, Adrian G. Mann
Speculations on the origin of the North American Midcontinent rift 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...
Authors
W.F. Cannon, W. J. Hinze
Geology of Keweenawan Supergroup Rocks near the Porcupine Mountains, Ontonagon and Gogebic Counties, Michigan Geology of Keweenawan Supergroup Rocks near the Porcupine Mountains, Ontonagon and Gogebic Counties, Michigan
This field trip examines the geology of rocks of the Keweenawan Supergroup (1 .1 Ga) and related intrusive rocks of the Midcontinent rift system (MRS) in the western part of the northern peninsula of Michigan. The combination of stops includes all formations of the Keweenawan Supergroup in this region. Examination of all described localities requires more than a single day and...
Authors
William F. Cannon, Suzanne W. Nicholson, Cheryl A. Hedgman, Laurel G. Woodruff, Klaus J. Schul
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 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
Metallogeny of the midcontinent rift system of North America 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...
Authors
S. W. Nicholson, W.F. Cannon, K. J. Schulz
The Midcontinent rift in the Lake Superior region with emphasis on its geodynamic evolution 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...
Authors
W.F. Cannon
Deep crustal structure of the Precambrian basement beneath northern Lake Michigan, midcontinent North America 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...
Authors
W.F. Cannon, Myung W. Lee, W. J. Hinze, K. J. Schulz, Alan G. Green
Keweenaw hot spot: Geophysical evidence for a 1.1 Ga mantle plume beneath the Midcontinent Rift System 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...
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 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. The rocks of the rift system are...
Authors
W.F. Cannon, Alan G. Green, D. R. Hutchinson, Myung W. Lee, Bernd Milkereit, John C. Behrendt, Henry C. Halls, J.C. Green, Albert B. Dickas, G. B. Morey, Richard Sutcliffe, C. Spencer
1986 GLIMPCE seismic reflection survey stacked data; Great Lakes region 1986 GLIMPCE seismic reflection survey stacked data; Great Lakes region
No abstract available.
Authors
Warren F. Agena, Myung W. Lee, D. R. Hutchinson, John C. Behrendt, W.F. Cannon, Alan G. Green
International Strategic Minerals Inventory summary report; manganese 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...
Authors
DeYoung, David M. Sutphin, William F. Cannon
Paleoclimate and mineral deposits Paleoclimate and mineral deposits
No abstract available.
Authors
Thomas M. Cronin, William F. Cannon, Richard Z. Poore