Philip L Verplanck
Philip Verplanck is a Research Geologist with the Geology, Geophysics, and Geochemistry Science Center.
Science and Products
Filter Total Items: 80
Water quality of the Boulder Creek watershed, Colorado
No abstract available.
Authors
Philip L. Verplanck, Sheila F. Murphy, Larry Billingsley Barber
Comprehensive water quality of the Boulder Creek Watershed, Colorado, during high-flow and low-flow conditions, 2000
Executive SummaryThe Boulder Creek Watershed, Colorado, is 1160 square kilometers in area and ranges in elevation from 1480 to 4120 meters above sea level. Streamflow originates primarily as snowmelt near the Continental Divide, and thus discharge varies seasonally and annually (Chapter 1). Most of the water in Boulder Creek is diverted for domestic, agricultural, and industrial use. Some diverted
Water-chemistry data for selected springs, geysers, and streams in Yellowstone National Park, Wyoming, 1999-2000
Sixty-seven water analyses are reported for samples collected from 44 hot springs and their
overflow drainages and two ambient-temperature acid streams in Yellowstone National Park (YNP)
during 1990-2000. Thirty-seven analyses are reported for 1999, 18 for June of 2000, and 12 for
September of 2000. These water samples were collected and analyzed as part of research
investigations in YNP on mi
Authors
James W. Ball, R. Blaine McCleskey, D. Kirk Nordstrom, JoAnn M. Holloway, Philip L. Verplanck, Sabin A. Sturtevant
Evaluation of strontium isotopes as a geochemical tracer in the middle Fork Mineral Creek basin, southwestern Colorado
No abstract available.
Authors
P. L. Verplanck, D.M. Unruh, D.L. Fey
Standard reference water samples for rare earth element determinations
Standard reference water samples (SRWS) were collected from two mine sites, one near Ophir, CO, USA and the other near Redding, CA, USA. The samples were filtered, preserved, and analyzed for rare earth element (REE) concentrations (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) by inductively coupled plasma-mass spectrometry (ICP-MS). These two samples were acid mine waters with elev
Authors
P. L. Verplanck, Ronald C. Antweiler, D. Kirk Nordstrom, Howard E. Taylor
Ground-water studies in Fairbanks, Alaska: A better understanding of some of the United States' highest natural arsenic concentrations
No abstract available.
Authors
Seth Mueller, Rich Goldfarb, Philip Verplanck
Geochemical investigations by the U.S. Geological Survey on uranium mining, milling, and environmental restoration
Recent research by the U.S. Geological Survey has characterized contaminant sources and identified important geochemical processes that influence transport of radionuclides from uranium mining and milling wastes. 1) Selective extraction studies indicated that alkaline earth sulfates and hydrous ferric oxides are important hosts of 226Ra in uranium mill tailings. The action of sulfate-reducing and
Authors
Edward R. Landa, Charles A. Cravotta, David L. Naftz, Philip L. Verplanck, D. Kirk Nordstrom, Robert A. Zielinski
The chemical and isotopic differentiation of an epizonal magma body: Organ Needle pluton, New Mexico
Major and trace element, and Nd and Sr isotopic compositions of whole rocks and mineral separates from the Oligocene, alkaline Organ Needle pluton (ONP), southern New Mexico, constrain models for the differentiation of the magma body parental to this compositionally zoned and layered epizonal intrusive body. The data reveal that the pluton is rimmed by lower εNd (∼ −5) and higher 87Sr/86Sr (∼0.708
Authors
P. L. Verplanck, G. L. Farmer, M. McCurry, S.A. Mertzman
Science and Products
Filter Total Items: 80
Water quality of the Boulder Creek watershed, Colorado
No abstract available.
Authors
Philip L. Verplanck, Sheila F. Murphy, Larry Billingsley Barber
Comprehensive water quality of the Boulder Creek Watershed, Colorado, during high-flow and low-flow conditions, 2000
Executive SummaryThe Boulder Creek Watershed, Colorado, is 1160 square kilometers in area and ranges in elevation from 1480 to 4120 meters above sea level. Streamflow originates primarily as snowmelt near the Continental Divide, and thus discharge varies seasonally and annually (Chapter 1). Most of the water in Boulder Creek is diverted for domestic, agricultural, and industrial use. Some diverted
Water-chemistry data for selected springs, geysers, and streams in Yellowstone National Park, Wyoming, 1999-2000
Sixty-seven water analyses are reported for samples collected from 44 hot springs and their
overflow drainages and two ambient-temperature acid streams in Yellowstone National Park (YNP)
during 1990-2000. Thirty-seven analyses are reported for 1999, 18 for June of 2000, and 12 for
September of 2000. These water samples were collected and analyzed as part of research
investigations in YNP on mi
Authors
James W. Ball, R. Blaine McCleskey, D. Kirk Nordstrom, JoAnn M. Holloway, Philip L. Verplanck, Sabin A. Sturtevant
Evaluation of strontium isotopes as a geochemical tracer in the middle Fork Mineral Creek basin, southwestern Colorado
No abstract available.
Authors
P. L. Verplanck, D.M. Unruh, D.L. Fey
Standard reference water samples for rare earth element determinations
Standard reference water samples (SRWS) were collected from two mine sites, one near Ophir, CO, USA and the other near Redding, CA, USA. The samples were filtered, preserved, and analyzed for rare earth element (REE) concentrations (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) by inductively coupled plasma-mass spectrometry (ICP-MS). These two samples were acid mine waters with elev
Authors
P. L. Verplanck, Ronald C. Antweiler, D. Kirk Nordstrom, Howard E. Taylor
Ground-water studies in Fairbanks, Alaska: A better understanding of some of the United States' highest natural arsenic concentrations
No abstract available.
Authors
Seth Mueller, Rich Goldfarb, Philip Verplanck
Geochemical investigations by the U.S. Geological Survey on uranium mining, milling, and environmental restoration
Recent research by the U.S. Geological Survey has characterized contaminant sources and identified important geochemical processes that influence transport of radionuclides from uranium mining and milling wastes. 1) Selective extraction studies indicated that alkaline earth sulfates and hydrous ferric oxides are important hosts of 226Ra in uranium mill tailings. The action of sulfate-reducing and
Authors
Edward R. Landa, Charles A. Cravotta, David L. Naftz, Philip L. Verplanck, D. Kirk Nordstrom, Robert A. Zielinski
The chemical and isotopic differentiation of an epizonal magma body: Organ Needle pluton, New Mexico
Major and trace element, and Nd and Sr isotopic compositions of whole rocks and mineral separates from the Oligocene, alkaline Organ Needle pluton (ONP), southern New Mexico, constrain models for the differentiation of the magma body parental to this compositionally zoned and layered epizonal intrusive body. The data reveal that the pluton is rimmed by lower εNd (∼ −5) and higher 87Sr/86Sr (∼0.708
Authors
P. L. Verplanck, G. L. Farmer, M. McCurry, S.A. Mertzman