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: 108
Precambrian basement map of the north Mid-Continent, U.S.A.; a digital representation of the 1990 P.K. Sims map
No abstract available.
Authors
Connie L. Dicken, Shana G. Pimley, William F. Cannon
Geology and mineral deposits of the Keweenaw Peninsula and vicinity, Michigan
No abstract available.
Authors
W. F. Cannon, Michele E. McRae, S. W. Nicholson
Aeromagnetic survey in Wisconsin 1997-98; digital data files
No abstract available.
Authors
D. L. Daniels, S. W. Nicholson, W. F. Cannon
Preliminary digital geologic map of the Penokean (early Proterozoic) continental margin in northern Michigan and Wisconsin
The data on this CD consist of geographic information system (GIS) coverages and tabular data on the geology of Early Proterozoic and Archean rocks in part of the Early Proterozoic Penokean orogeny. The map emphasizes metasedimentary and metavolcanic rocks that were deposited along the southern margin of the Superior craton and were later deformed during continental collision at about 1850 Ma. Th
Authors
W. F. Cannon, Doug Ottke
Digital bedrock geologic map of the Ashland and northern part of the Ironwood 30' X 60' quadrangles, Wisconsin, and Michigan
No abstract available.
Authors
W. F. Cannon, L. G. Woodruff, S. W. Nicholson, C. A. Hedgman, R. Barber-Delach
Potential for new nickel-copper sulfide deposits in the Lake Superior region
Scientists from the U.S. Geological Survey are evaluating the potential for undiscovered sulfide deposits containing varying amounts of nickel, copper, platinum-group metals, and cobalt in the Lake Superior region as part of an ongoing effort to assess the mineral potential of the United States. Similarities between rocks of the Midcontinent rift and rocks that host the Voisey Bay nickel-copper-co
Authors
Klaus J. Schulz, William F. Cannon
U-Th-Pb zircon ages of some Keweenawan Supergroup rocks from the south shore of Lake Superior
New single-crystal zircon U–Th–Pb ages for plutonic and rhyolitic Keweenawan Supergroup rocks from the south shore of Lake Superior provide geochronological constraints on magmatic evolution associated with the 1.1 Ga Midcontinent rift. Analyses of a granophyric phase of the Mineral Lake intrusion and the Mellen granite, both parts of the Mellen Intrusive Complex, and a laterally extensive rhyolit
Authors
R. E. Zartman, S. W. Nicholson, W. F. Cannon, G. B. Morey
Digital geologic map and mineral deposits of the Lake Superior region: Minnesota, Wisconsin, Michigan
No abstract available.
Authors
W. F. Cannon, T. H. Kress, D. M. Sutphin, G. B. Morey, Joyce Meints
Closing of the Midcontinent-Rift - a far-field effect on Grenvillian compression
The Midcontinent rift formed in the Laurentian supercontinent between 1109 and 1094 Ma. Soon after rifting, stresses changed from extensional to compressional, and the central graben of the rift was partly inverted by thrusting on original extensional faults. Thrusting culminated at about 1060 Ma but may have begun as early as 1080 Ma. On the southwest-trending arm of the rift, the crust was short
Authors
W. F. Cannon
Crustal-scale thrusting and origin of the Montreal River monocline-A 35-km-thick cross section of the midcontinent rift in northern Michigan and Wisconsin
A structurally simple, 35-km-thick, north facing stratigraphic succession of Late Archean to Middle Proterozoic rocks is exposed near the Montreal River, which forms the border between northern Wisconsin and Michigan. This structure, the Montreal River monocline, is composed of steeply dipping to vertical sedimentary rocks and flood basalts of the Keweenawan Supergroup (Middle Proterozoic) along t
Authors
W. F. Cannon, Z. E. Peterman, P. K. Sims
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, diffractive
Authors
Deborah R. Hutchinson, Myung W. Lee, John C. Behrendt, William F. Cannon, Adrian G. Mann
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 participants are enc
Authors
William F. Cannon, Suzanne W. Nicholson, Cheryl A. Hedgman, Laurel G. Woodruff, Klaus J. Schul
Science and Products
Filter Total Items: 15
Filter Total Items: 108
Precambrian basement map of the north Mid-Continent, U.S.A.; a digital representation of the 1990 P.K. Sims map
No abstract available.
Authors
Connie L. Dicken, Shana G. Pimley, William F. Cannon
Geology and mineral deposits of the Keweenaw Peninsula and vicinity, Michigan
No abstract available.
Authors
W. F. Cannon, Michele E. McRae, S. W. Nicholson
Aeromagnetic survey in Wisconsin 1997-98; digital data files
No abstract available.
Authors
D. L. Daniels, S. W. Nicholson, W. F. Cannon
Preliminary digital geologic map of the Penokean (early Proterozoic) continental margin in northern Michigan and Wisconsin
The data on this CD consist of geographic information system (GIS) coverages and tabular data on the geology of Early Proterozoic and Archean rocks in part of the Early Proterozoic Penokean orogeny. The map emphasizes metasedimentary and metavolcanic rocks that were deposited along the southern margin of the Superior craton and were later deformed during continental collision at about 1850 Ma. Th
Authors
W. F. Cannon, Doug Ottke
Digital bedrock geologic map of the Ashland and northern part of the Ironwood 30' X 60' quadrangles, Wisconsin, and Michigan
No abstract available.
Authors
W. F. Cannon, L. G. Woodruff, S. W. Nicholson, C. A. Hedgman, R. Barber-Delach
Potential for new nickel-copper sulfide deposits in the Lake Superior region
Scientists from the U.S. Geological Survey are evaluating the potential for undiscovered sulfide deposits containing varying amounts of nickel, copper, platinum-group metals, and cobalt in the Lake Superior region as part of an ongoing effort to assess the mineral potential of the United States. Similarities between rocks of the Midcontinent rift and rocks that host the Voisey Bay nickel-copper-co
Authors
Klaus J. Schulz, William F. Cannon
U-Th-Pb zircon ages of some Keweenawan Supergroup rocks from the south shore of Lake Superior
New single-crystal zircon U–Th–Pb ages for plutonic and rhyolitic Keweenawan Supergroup rocks from the south shore of Lake Superior provide geochronological constraints on magmatic evolution associated with the 1.1 Ga Midcontinent rift. Analyses of a granophyric phase of the Mineral Lake intrusion and the Mellen granite, both parts of the Mellen Intrusive Complex, and a laterally extensive rhyolit
Authors
R. E. Zartman, S. W. Nicholson, W. F. Cannon, G. B. Morey
Digital geologic map and mineral deposits of the Lake Superior region: Minnesota, Wisconsin, Michigan
No abstract available.
Authors
W. F. Cannon, T. H. Kress, D. M. Sutphin, G. B. Morey, Joyce Meints
Closing of the Midcontinent-Rift - a far-field effect on Grenvillian compression
The Midcontinent rift formed in the Laurentian supercontinent between 1109 and 1094 Ma. Soon after rifting, stresses changed from extensional to compressional, and the central graben of the rift was partly inverted by thrusting on original extensional faults. Thrusting culminated at about 1060 Ma but may have begun as early as 1080 Ma. On the southwest-trending arm of the rift, the crust was short
Authors
W. F. Cannon
Crustal-scale thrusting and origin of the Montreal River monocline-A 35-km-thick cross section of the midcontinent rift in northern Michigan and Wisconsin
A structurally simple, 35-km-thick, north facing stratigraphic succession of Late Archean to Middle Proterozoic rocks is exposed near the Montreal River, which forms the border between northern Wisconsin and Michigan. This structure, the Montreal River monocline, is composed of steeply dipping to vertical sedimentary rocks and flood basalts of the Keweenawan Supergroup (Middle Proterozoic) along t
Authors
W. F. Cannon, Z. E. Peterman, P. K. Sims
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, diffractive
Authors
Deborah R. Hutchinson, Myung W. Lee, John C. Behrendt, William F. Cannon, Adrian G. Mann
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 participants are enc
Authors
William F. Cannon, Suzanne W. Nicholson, Cheryl A. Hedgman, Laurel G. Woodruff, Klaus J. Schul