David B Smith (Former Employee)
Science and Products
Filter Total Items: 49
Geochemical response to variable streamflow conditions in contaminated and uncontaminated streams Geochemical response to variable streamflow conditions in contaminated and uncontaminated streams
Seasonal variations in stream inorganic geochemistry are not well documented or understood. We sampled two mining-impacted and two relatively pristine streams in western Montana over a 12-month period, collecting samples every 4 weeks, with supplemental sampling (at least weekly) during spring runoff. We analyzed all samples for dissolved (operationally defined as
Authors
Sonia A. Nagorski, Johnnie N. Moore, Temple E. McKinnon, David B. Smith
Distribution of metals in water and bed sediment in a mineral-rich watershed, Montana, USA Distribution of metals in water and bed sediment in a mineral-rich watershed, Montana, USA
We sampled the Blackfoot River (Montana) and its major tributaries from the headwaters of the basin to near its confluence with the Clark Fork River over the course of 5 days in August 1998. We measured streamflow, collected fine-grained (
Authors
Sonia A. Nagorski, Johnnie N Moore, David B. Smith
Geochemical baseline studies and relations between water quality and streamflow in the Upper Blackfoot watershed, Montana: Data for July 1997-December 1998 Geochemical baseline studies and relations between water quality and streamflow in the Upper Blackfoot watershed, Montana: Data for July 1997-December 1998
We used ultraclean sampling techniques to study the solute (operationally defined as
Authors
Sonia A. Nagorski, Johnnie N. Moore, David B. Smith
Mineral resources of the Muggins Mountains Wilderness Study Area, Yuma County, Arizona Mineral resources of the Muggins Mountains Wilderness Study Area, Yuma County, Arizona
No abstract available.
Authors
David B. Smith, R. M. Tosdal, J. A. Pitkin, M. D. Kleinkopf, R. H. Wood
Mineral resources of the Indian Pass and Picacho Peak Wilderness Study Areas, Imperial County, California Mineral resources of the Indian Pass and Picacho Peak Wilderness Study Areas, Imperial County, California
No abstract available.
Authors
David B. Smith, B. R. Berger, R. M. Tosdal, D. R. Sherrod, G. L. Raines, Andrew Griscom, M.G. Helferty, Clayton M. Rumsey, A. B. McMahan
Leaching characteristics of ash from the May 18, 1980, eruption of Mount St. Helens Volcano, Washington Leaching characteristics of ash from the May 18, 1980, eruption of Mount St. Helens Volcano, Washington
Leaching of freshly erupted air-fall ash, unaffected by rain, from the May 18, 1.980,eruption of Mount St. Helens volcano, Washington, shows that Ca 2+, Na+, Mg+, SO4 2-, and Cl- are the predominant chemical species released on first exposure of the ash to water. Extremely high correlation of Ca with SO4 and Na with Cl in water leachates suggests the presence of CaSO4 and NaCl salts on...
Authors
David Burl Smith, Robert A. Zielinski, Howard E. Taylor
Science and Products
Filter Total Items: 49
Geochemical response to variable streamflow conditions in contaminated and uncontaminated streams Geochemical response to variable streamflow conditions in contaminated and uncontaminated streams
Seasonal variations in stream inorganic geochemistry are not well documented or understood. We sampled two mining-impacted and two relatively pristine streams in western Montana over a 12-month period, collecting samples every 4 weeks, with supplemental sampling (at least weekly) during spring runoff. We analyzed all samples for dissolved (operationally defined as
Authors
Sonia A. Nagorski, Johnnie N. Moore, Temple E. McKinnon, David B. Smith
Distribution of metals in water and bed sediment in a mineral-rich watershed, Montana, USA Distribution of metals in water and bed sediment in a mineral-rich watershed, Montana, USA
We sampled the Blackfoot River (Montana) and its major tributaries from the headwaters of the basin to near its confluence with the Clark Fork River over the course of 5 days in August 1998. We measured streamflow, collected fine-grained (
Authors
Sonia A. Nagorski, Johnnie N Moore, David B. Smith
Geochemical baseline studies and relations between water quality and streamflow in the Upper Blackfoot watershed, Montana: Data for July 1997-December 1998 Geochemical baseline studies and relations between water quality and streamflow in the Upper Blackfoot watershed, Montana: Data for July 1997-December 1998
We used ultraclean sampling techniques to study the solute (operationally defined as
Authors
Sonia A. Nagorski, Johnnie N. Moore, David B. Smith
Mineral resources of the Muggins Mountains Wilderness Study Area, Yuma County, Arizona Mineral resources of the Muggins Mountains Wilderness Study Area, Yuma County, Arizona
No abstract available.
Authors
David B. Smith, R. M. Tosdal, J. A. Pitkin, M. D. Kleinkopf, R. H. Wood
Mineral resources of the Indian Pass and Picacho Peak Wilderness Study Areas, Imperial County, California Mineral resources of the Indian Pass and Picacho Peak Wilderness Study Areas, Imperial County, California
No abstract available.
Authors
David B. Smith, B. R. Berger, R. M. Tosdal, D. R. Sherrod, G. L. Raines, Andrew Griscom, M.G. Helferty, Clayton M. Rumsey, A. B. McMahan
Leaching characteristics of ash from the May 18, 1980, eruption of Mount St. Helens Volcano, Washington Leaching characteristics of ash from the May 18, 1980, eruption of Mount St. Helens Volcano, Washington
Leaching of freshly erupted air-fall ash, unaffected by rain, from the May 18, 1.980,eruption of Mount St. Helens volcano, Washington, shows that Ca 2+, Na+, Mg+, SO4 2-, and Cl- are the predominant chemical species released on first exposure of the ash to water. Extremely high correlation of Ca with SO4 and Na with Cl in water leachates suggests the presence of CaSO4 and NaCl salts on...
Authors
David Burl Smith, Robert A. Zielinski, Howard E. Taylor