Philip L Verplanck
Philip Verplanck is a Research Geologist with the Geology, Geophysics, and Geochemistry Science Center.
Science and Products
Filter Total Items: 80
The effects of acidic mine drainage from historical mines in the Animas River watershed, San Juan County, Colorado—What is being done and what can be done to improve water quality?
Historical production of metals in the western United States has left a legacy of acidic drainage and toxic metals in many mountain watersheds that are a potential threat to human and ecosystem health. Studies of the effects of historical mining on surface water chemistry and riparian habitat in the Animas River watershed have shown that cost-effective remediation of mine sites must be carefully p
Authors
Stanley E. Church, Robert J. Owen, Paul Von Guerard, Philip L. Verplanck, Briant A. Kimball, Douglas B. Yager
Well construction information, lithologic logs, water level data, and overview of research in Handcart Gulch, Colorado: An alpine watershed affected by metalliferous hydrothermal alteration
Integrated, multidisciplinary studies of the Handcart Gulch alpine watershed provide a unique opportunity to study and characterize the geology and hydrology of an alpine watershed along the Continental Divide. The study area arose out of the donation of four abandoned, deep mineral exploration boreholes to the U.S. Geological Survey for research purposes by Mineral Systems Inc. These holes were s
Authors
Jonathan S. Caine, Andrew H. Manning, Philip L. Verplanck, Dana J. Bove, Katherine Gurley Kahn, Shemin Ge
Questa baseline and pre-mining ground-water quality investigation. 20. Water chemistry of the Red River and selected seeps, tributaries, and precipitation, Taos County, New Mexico, 2000-2004
As part of a multi-year project to infer the pre-mining ground-water quality at Molycorp's Questa mine site, surface-water samples of the Red River, some of its tributaries, seeps, and snow samples were collected for analysis of inorganic solutes and of water and sulfate stable isotopes in selected samples. The primary aim of this study was to document diel, storm event, and seasonal variations i
Authors
P. L. Verplanck, R. Blaine McCleskey, D. Kirk Nordstrom
Questa baseline and pre-mining ground-water quality investigation. 23. Quantification of mass loading from mined and unmined areas along the Red River, New Mexico
Along the course of the Red River, between the town of Red River, New Mexico, and the U.S. Geological Survey streamflow-gaging station near Questa, New Mexico, there are several catchments that contain hydrothermally altered bedrock. Some of these alteration zones have been mined and others have not, presenting an opportunity to evaluate differences that may exist in the mass loading of metals fro
Authors
Briant A. Kimball, D. Kirk Nordstrom, Robert L. Runkel, Kirk R. Vincent, Phillip L. Verplanck
Chemical loading into surface water along a hydrological, biogeochemical, and land use gradient: A holistic watershed approach
Identifying the sources and impacts of organic and inorganic contaminants at the watershed scale is a complex challenge because of the multitude of processes occurring in time and space. Investigation of geochemical transformations requires a systematic evaluation of hydrologic, landscape, and anthropogenic factors. The 1160 km2 Boulder Creek Watershed in the Colorado Front Range encompasses a gra
Authors
L. B. Barber, S.F. Murphy, P. L. Verplanck, Mark W. Sandstrom, Howard E. Taylor, E. T. Furlong
Geochemistry and source waters of rock glacier outflow, Colorado Front Range
We characterize the seasonal variation in the geochemical and isotopic content of the outflow of the Green Lake 5 rock glacier (RG5), located in the Green Lakes Valley of the Colorado Front Range, USA. Between June and August, the geochemical content of rock glacier outflow does not appear to differ substantially from that of other surface waters in the Green Lakes Valley. Thus, for this alpine ec
Authors
M.W. Williams, M. Knauf, N. Caine, F. Liu, P. L. Verplanck
Questa baseline and pre-mining ground-water quality investigation. 5. Well installation, water-level data, and surface- and ground-water geochemistry in the Straight Creek drainage basin, Red River Valley, New Mexico, 2001-03
The U.S. Geological Survey, in cooperation with the New Mexico Environment Department, is investigating the pre-mining ground-water chemistry at the Molycorp molybdenum mine in the Red River Valley, northern New Mexico. The primary approach is to determine the processes controlling ground-water chemistry at an unmined, off-site, proximal analog. The Straight Creek drainage basin, chosen for this p
Authors
Cheryl A. Naus, R. Blaine McCleskey, D. Kirk Nordstrom, Lisa C. Donohoe, Andrew G. Hunt, Frederick L. Paillet, Roger H. Morin, Philip L. Verplanck
Geochemistry of Red Mountain Creek, Colorado, under low-flow conditions, August 2002
Red Mountain Creek, an acid mine drainage stream in southwestern Colorado, was the subject of a synoptic study conducted in August 2002. During the synoptic study, a solution containing lithium chloride was injected continuously to allow for the calculation of streamflow using the tracer-dilution method. Synoptic water-quality samples were collected from 48 stream sites and 29 inflow locations alo
Authors
Robert L. Runkel, Briant A. Kimball, Katherine Walton-Day, Philip L. Verplanck
Aqueous stability of gadolinium in surface waters receiving sewage treatment plant effluent Boulder Creek, Colorado
In many surface waters, sewage treatment plant (STP) effluent is a substantial source of both regulated and unregulated contaminants, including a suite of complex organic compounds derived from household chemicals, pharmaceutical, and industrial and medical byproducts. In addition, STP effluents in some urban areas have also been shown to have a positive gadolinium (Gd) anomaly in the rare earth e
Authors
P. L. Verplanck, Howard E. Taylor, D. Kirk Nordstrom, L. B. Barber
Rare earth element partitioning between hydrous ferric oxides and acid mine water during iron oxidation
Ferrous iron rapidly oxidizes to Fe (III) and precipitates as hydrous Fe (III) oxides in acid mine waters. This study examines the effect of Fe precipitation on the rare earth element(REE) geochemistry of acid mine waters to determine the pH range over which REEs behave conservatively and the range over which attenuation and fractionation occur. Two field studies were designed to investigate REE a
Authors
P. L. Verplanck, D. Kirk Nordstrom, Howard E. Taylor, B. A. Kimball
Questa baseline and pre-mining ground-water quality investigation. 2. Low-flow (2001) and snowmelt (2002) synoptic/tracer water chemistry for the Red River, New Mexico
Water analyses are reported for 259 samples
collected from the Red River, New Mexico, and its
tributaries during low-flow(2001) and spring snowmelt
(2002) tracer studies. Water samples were collected
along a 20-kilometer reach of the Red River beginning
just east of the town of Red River and ending at the U.S.
Geological Survey streamflow-gaging station located
east of Questa, New Mexico. T
Authors
R. Blaine McCleskey, D. Kirk Nordstrom, Judy I. Steiger, Briant A. Kimball, Philip L. Verplanck
Chemical analyses of ground and surface waters, Ester Dome, central Alaska, 2000-2001
Water analyses are reported for ground and surface waters collected at 33 sites on and near Ester Dome, Fairbanks area, central Alaska during 2000-2001. This interdisciplinary study focused on documenting the temporal and spatial chemical variations in arsenic concentrations to elucidate the processes that lead to elevated arsenic concentrations in ground water. Field parameters and water analyses
Authors
P. L. Verplanck, S. H. Mueller, E. K. Youcha, R.J. Goldfarb, R.F. Sanzolone, R. Blaine McCleskey, Paul H. Briggs, M. Roller, M. Adams, D. Kirk Nordstrom
Science and Products
Filter Total Items: 80
The effects of acidic mine drainage from historical mines in the Animas River watershed, San Juan County, Colorado—What is being done and what can be done to improve water quality?
Historical production of metals in the western United States has left a legacy of acidic drainage and toxic metals in many mountain watersheds that are a potential threat to human and ecosystem health. Studies of the effects of historical mining on surface water chemistry and riparian habitat in the Animas River watershed have shown that cost-effective remediation of mine sites must be carefully p
Authors
Stanley E. Church, Robert J. Owen, Paul Von Guerard, Philip L. Verplanck, Briant A. Kimball, Douglas B. Yager
Well construction information, lithologic logs, water level data, and overview of research in Handcart Gulch, Colorado: An alpine watershed affected by metalliferous hydrothermal alteration
Integrated, multidisciplinary studies of the Handcart Gulch alpine watershed provide a unique opportunity to study and characterize the geology and hydrology of an alpine watershed along the Continental Divide. The study area arose out of the donation of four abandoned, deep mineral exploration boreholes to the U.S. Geological Survey for research purposes by Mineral Systems Inc. These holes were s
Authors
Jonathan S. Caine, Andrew H. Manning, Philip L. Verplanck, Dana J. Bove, Katherine Gurley Kahn, Shemin Ge
Questa baseline and pre-mining ground-water quality investigation. 20. Water chemistry of the Red River and selected seeps, tributaries, and precipitation, Taos County, New Mexico, 2000-2004
As part of a multi-year project to infer the pre-mining ground-water quality at Molycorp's Questa mine site, surface-water samples of the Red River, some of its tributaries, seeps, and snow samples were collected for analysis of inorganic solutes and of water and sulfate stable isotopes in selected samples. The primary aim of this study was to document diel, storm event, and seasonal variations i
Authors
P. L. Verplanck, R. Blaine McCleskey, D. Kirk Nordstrom
Questa baseline and pre-mining ground-water quality investigation. 23. Quantification of mass loading from mined and unmined areas along the Red River, New Mexico
Along the course of the Red River, between the town of Red River, New Mexico, and the U.S. Geological Survey streamflow-gaging station near Questa, New Mexico, there are several catchments that contain hydrothermally altered bedrock. Some of these alteration zones have been mined and others have not, presenting an opportunity to evaluate differences that may exist in the mass loading of metals fro
Authors
Briant A. Kimball, D. Kirk Nordstrom, Robert L. Runkel, Kirk R. Vincent, Phillip L. Verplanck
Chemical loading into surface water along a hydrological, biogeochemical, and land use gradient: A holistic watershed approach
Identifying the sources and impacts of organic and inorganic contaminants at the watershed scale is a complex challenge because of the multitude of processes occurring in time and space. Investigation of geochemical transformations requires a systematic evaluation of hydrologic, landscape, and anthropogenic factors. The 1160 km2 Boulder Creek Watershed in the Colorado Front Range encompasses a gra
Authors
L. B. Barber, S.F. Murphy, P. L. Verplanck, Mark W. Sandstrom, Howard E. Taylor, E. T. Furlong
Geochemistry and source waters of rock glacier outflow, Colorado Front Range
We characterize the seasonal variation in the geochemical and isotopic content of the outflow of the Green Lake 5 rock glacier (RG5), located in the Green Lakes Valley of the Colorado Front Range, USA. Between June and August, the geochemical content of rock glacier outflow does not appear to differ substantially from that of other surface waters in the Green Lakes Valley. Thus, for this alpine ec
Authors
M.W. Williams, M. Knauf, N. Caine, F. Liu, P. L. Verplanck
Questa baseline and pre-mining ground-water quality investigation. 5. Well installation, water-level data, and surface- and ground-water geochemistry in the Straight Creek drainage basin, Red River Valley, New Mexico, 2001-03
The U.S. Geological Survey, in cooperation with the New Mexico Environment Department, is investigating the pre-mining ground-water chemistry at the Molycorp molybdenum mine in the Red River Valley, northern New Mexico. The primary approach is to determine the processes controlling ground-water chemistry at an unmined, off-site, proximal analog. The Straight Creek drainage basin, chosen for this p
Authors
Cheryl A. Naus, R. Blaine McCleskey, D. Kirk Nordstrom, Lisa C. Donohoe, Andrew G. Hunt, Frederick L. Paillet, Roger H. Morin, Philip L. Verplanck
Geochemistry of Red Mountain Creek, Colorado, under low-flow conditions, August 2002
Red Mountain Creek, an acid mine drainage stream in southwestern Colorado, was the subject of a synoptic study conducted in August 2002. During the synoptic study, a solution containing lithium chloride was injected continuously to allow for the calculation of streamflow using the tracer-dilution method. Synoptic water-quality samples were collected from 48 stream sites and 29 inflow locations alo
Authors
Robert L. Runkel, Briant A. Kimball, Katherine Walton-Day, Philip L. Verplanck
Aqueous stability of gadolinium in surface waters receiving sewage treatment plant effluent Boulder Creek, Colorado
In many surface waters, sewage treatment plant (STP) effluent is a substantial source of both regulated and unregulated contaminants, including a suite of complex organic compounds derived from household chemicals, pharmaceutical, and industrial and medical byproducts. In addition, STP effluents in some urban areas have also been shown to have a positive gadolinium (Gd) anomaly in the rare earth e
Authors
P. L. Verplanck, Howard E. Taylor, D. Kirk Nordstrom, L. B. Barber
Rare earth element partitioning between hydrous ferric oxides and acid mine water during iron oxidation
Ferrous iron rapidly oxidizes to Fe (III) and precipitates as hydrous Fe (III) oxides in acid mine waters. This study examines the effect of Fe precipitation on the rare earth element(REE) geochemistry of acid mine waters to determine the pH range over which REEs behave conservatively and the range over which attenuation and fractionation occur. Two field studies were designed to investigate REE a
Authors
P. L. Verplanck, D. Kirk Nordstrom, Howard E. Taylor, B. A. Kimball
Questa baseline and pre-mining ground-water quality investigation. 2. Low-flow (2001) and snowmelt (2002) synoptic/tracer water chemistry for the Red River, New Mexico
Water analyses are reported for 259 samples
collected from the Red River, New Mexico, and its
tributaries during low-flow(2001) and spring snowmelt
(2002) tracer studies. Water samples were collected
along a 20-kilometer reach of the Red River beginning
just east of the town of Red River and ending at the U.S.
Geological Survey streamflow-gaging station located
east of Questa, New Mexico. T
Authors
R. Blaine McCleskey, D. Kirk Nordstrom, Judy I. Steiger, Briant A. Kimball, Philip L. Verplanck
Chemical analyses of ground and surface waters, Ester Dome, central Alaska, 2000-2001
Water analyses are reported for ground and surface waters collected at 33 sites on and near Ester Dome, Fairbanks area, central Alaska during 2000-2001. This interdisciplinary study focused on documenting the temporal and spatial chemical variations in arsenic concentrations to elucidate the processes that lead to elevated arsenic concentrations in ground water. Field parameters and water analyses
Authors
P. L. Verplanck, S. H. Mueller, E. K. Youcha, R.J. Goldfarb, R.F. Sanzolone, R. Blaine McCleskey, Paul H. Briggs, M. Roller, M. Adams, D. Kirk Nordstrom