Search Results - "Cannon, William F."

Mercury in the soil of two contrasting watersheds in the eastern United States by Burns, Douglas A, Woodruff, Laurel G, Bradley, Paul M, Cannon, William F

“…Soil represents the largest store of mercury (Hg) in terrestrial ecosystems, and further study of the factors associated with soil Hg storage is needed to…”
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Pilot studies for the North American Soil Geochemical Landscapes Project – Site selection, sampling protocols, analytical methods, and quality control protocols by Smith, David B., Woodruff, Laurel G., O’Leary, Richard M., Cannon, William F., Garrett, Robert G., Kilburn, James E., Goldhaber, Martin B.

“…In 2004, the US Geological Survey (USGS) and the Geological Survey of Canada sampled and chemically analyzed soils along two transects across Canada and the…”
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Immediate and Long-Term Fire Effects on Total Mercury in Forests Soils of Northeastern Minnesota by Woodruff, Laurel G, Cannon, William F

“…Within the Boundary Waters Canoe Area Wilderness in northeastern Minnesota, soils were collected from 116 sites in areas of primarily virgin forest with…”
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A national-scale geochemical and mineralogical survey of soils of the conterminous United States by Smith, David B., Cannon, William F., Woodruff, Laurel G.

“…► Sampling for national-scale soil geochemical and mineralogical survey completed for conterminous USA. ► Natural variation for most elements is approximately…”
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Continental-scale patterns in soil geochemistry and mineralogy: Results from two transects across the United States and Canada by Woodruff, Laurel G., Cannon, William F., Eberl, Dennis D., Smith, David B., Kilburn, James E., Horton, John D., Garrett, Robert G., Klassen, Rodney A.

“…In 2004, the US Geological Survey (USGS) and the Geological Survey of Canada (GSC) initiated a pilot study that involved collection of more than 1500 soil…”
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Concentrations of Polycyclic Aromatic Hydrocarbons and Inorganic Constituents in Ambient Surface Soils, Chicago, Illinois: 2001-2002 by Kay, Robert T., Arnold, Terri L., Cannon, William F., Graham, David

“…Samples of ambient surface soils were collected from 56 locations in Chicago, Illinois, using stratified random sampling techniques and analyzed for polycyclic…”
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Depositional model for shallow-marine manganese deposits around black shale basins by Force, Eric R, Cannon, William F

“…Some of the world's largest and most valuable manganese resources formed as shallow-marine chemical sediments. We hypothesize that manganese deposition was on…”
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Thermal history of low metamorphic grade Paleoproterozoic sedimentary rocks of the Penokean orogen, Lake Superior region: Evidence for a widespread 1786Ma overprint based on xenotime geochronology by Vallini, Daniela A., Cannon, William F., Schulz, Klaus J., McNaughton, Neal J.

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The Penokean orogeny in the Lake Superior region by Schulz, Klaus J., Cannon, William F.

“…The Penokean orogeny began at about 1880 Ma when an oceanic arc, now the Pembine–Wausau terrane, collided with the southern margin of the Archean Superior…”
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Evidence for episodic oxygenation in a weakly redox-buffered deep mid-Proterozoic ocean by Planavsky, Noah J., Slack, John F., Cannon, William F., O'Connell, Brennan, Isson, Terry T., Asael, Dan, Jackson, John C., Hardisty, Dalton S., Lyons, Timothy W., Bekker, Andrey

“…Over the last two decades, popular opinion about prevailing conditions in the mid-Proterozoic deep ocean has evolved from fully oxygenated to globally euxinic…”
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Geophysical insights into Paleoproterozoic tectonics along the southern margin of the Superior Province, central Upper Peninsula, Michigan, USA by Drenth, Benjamin J., Cannon, William F., Schulz, Klaus J., Ayuso, Robert A.

“…•The study area was a nexus for key Paleoproterozoic tectonic events.•Geophysical data image rock units and faults critical to the tectonic history.•Vestiges…”
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The distribution of selected elements and minerals in soil of the conterminous United States by Woodruff, Laurel, Cannon, William F., Smith, David B., Solano, Federico

“…In 2007, the U.S. Geological Survey initiated a low-density (1 site per 1600km2, 4857 sites) geochemical and mineralogical survey of soil of the conterminous…”
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Geochemistry of glacial sediments in the area of the Bend massive sulfide deposit, north-central Wisconsin by Woodruff, Laurel G, Attig, John W, Cannon, William F

“…Geochemical exploration in northern Wisconsin has been problematic because of thick glacial overburden and complex stratigraphic record of glacial history. To…”
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Evidence for a concealed Midcontinent Rift-related northeast Iowa intrusive complex by Drenth, Benjamin J., Souders, A. Kate, Schulz, Klaus J., Feinberg, Joshua M., Anderson, Raymond R., Chandler, Val.W., Cannon, William F., Clark, Ryan J.

“…•Large amplitude aeromagnetic and gravity anomalies reflect a largely mafic-ultramafic intrusive complex concealed under Paleozoic cover, the northeast Iowa…”
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Soil geochemical signature of urbanization and industrialization – Chicago, Illinois, USA by Cannon, W.F., Horton, John D.

“…The concentrations of 45 elements in ambient (not obviously disturbed) surface soils were determined for 57 sites distributed throughout the city of Chicago,…”
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Reinterpretation of Paleoproterozoic accretionary boundaries of the north-central United States based on a new aeromagnetic-geologic compilation by Holm, D.K., Anderson, R., Boerboom, T.J., Cannon, W.F., Chandler, V., Jirsa, M., Miller, J., Schneider, D.A., Schulz, K.J., Van Schmus, W.R.

“…The Paleoproterozoic crust in the north-central U.S. represents intact juvenile terranes accreted to the rifted Archean Superior craton. A new tectonic…”
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Thermal history of low metamorphic grade Paleoproterozoic sedimentary rocks of the Penokean orogen, Lake Superior region: Evidence for a widespread 1786 Ma overprint based on xenotime geochronology by Vallini, Daniela A., Cannon, William F., Schulz, Klaus J., McNaughton, Neal J.

“…Paleoproterozoic strata in northern Michigan, Wisconsin, and Minnesota were deposited between 2.3 and 1.75 Ga within the rifted margin and subsequent foreland…”
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Mercury in the Soil of Two Contrasting Watersheds in the Eastern United States: e86855 by Burns, Douglas A, Woodruff, Laurel G, Bradley, Paul M, Cannon, William F

“…Soil represents the largest store of mercury (Hg) in terrestrial ecosystems, and further study of the factors associated with soil Hg storage is needed to…”
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Pilot studies for the North American Soil Geochemical Landscapes Project - Site selection, sampling protocols, analytical methods, and quality control protocols: Geochemical Studies of North American Soils: Results from the Pilot Study Phase of the North American Soil Geochemical Landscapes Project by SMITH, David B, WOODRUFF, Laurel G, O'LEARY, Richard M, CANNON, William F, GARRETT, Robert G, KILBURN, James E, GOLDHABER, Martin B

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Continental-scale patterns in soil geochemistry and mineralogy: Results from two transects across the United States and Canada: Geochemical Studies of North American Soils: Results from the Pilot Study Phase of the North American Soil Geochemical Landscapes Project by WOODRUFF, Laurel G, CANNON, William F, EBERL, Dennis D, SMITH, David B, KILBURN, James E, HORTON, John D, GARRETT, Robert G, KLASSEN, Rodney A

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