Michael Pribil
I am currently the lab manager of the Multi-collector ICP-MS facility in the USGS Minerals high resolution lab. The general focus of the lab is to research stable and radiogenic isotopes with an emphasis in collaborative research projects.
Science and Products
Filter Total Items: 21
Measurement of in situ sulfur isotopes by laser ablation multi-collector ICPMS: opening Pandora’s Box Measurement of in situ sulfur isotopes by laser ablation multi-collector ICPMS: opening Pandora’s Box
Laser ablation multi-collector ICPMS is a modern tool for in situ measurement of S isotopes. Advantages of the technique are speed of analysis and relatively minor matrix effects combined with spatial resolution sufficient for many applications. The main disadvantage is a more destructive sampling mechanism relative to the ion microprobe technique. Recent advances in instrumentation...
Authors
William I. Ridley, Michael Pribil, Alan E. Koenig, John F. Slack
Sulfate and sulfide sulfur isotopes (δ34S and δ33S) measured by solution and laser ablation MC-ICP-MS: An enhanced approach using external correction Sulfate and sulfide sulfur isotopes (δ34S and δ33S) measured by solution and laser ablation MC-ICP-MS: An enhanced approach using external correction
Isotope ratio measurements using a multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS) commonly use standard-sample bracketing with a single isotope standard for mass bias correction for elements with narrow-range isotope systems measured by MC-ICP-MS, e.g. Cu, Fe, Zn, and Hg. However, sulfur (S) isotopic composition (δ34S) in nature can range from at least − 40 to +...
Authors
Michael Pribil, William I. Ridley, Poul Emsbo
Steep spatial gradients of volcanic and marine sulfur in Hawaiian rainfall and ecosystems Steep spatial gradients of volcanic and marine sulfur in Hawaiian rainfall and ecosystems
Sulfur, a nutrient required by terrestrial ecosystems, is likely to be regulated by atmospheric processes in well-drained, upland settings because of its low concentration in most bedrock and generally poor retention by inorganic reactions within soils. Environmental controls on sulfur sources in unpolluted ecosystems have seldom been investigated in detail, even though the possibility...
Authors
Carleton R. Bern, Oliver A. Chadwick, Carol Kendall, Michael J. Pribil
Isotopic geochemistry of Panama rivers Isotopic geochemistry of Panama rivers
River water samples collected from 78 watersheds rivers along a 500-km transect across a Late Cretaceous-Tertiary andesitic volcanic arc terrane in west-central Panama provide a synoptic overview of riverine geochemistry, chemical denudation, and CO2 consumption in the tropics. D/H and 18O/16O relationships indicate that bedrock dissolution of andesitic arc crust in Panama is driven by...
Authors
Russell S. Harmon, Gerhard Worner, Michael Pribil, Zoltan Kern, Istvan Forizs, W. Berry Lyons, Christopher B. Gardner, Steven T. Goldsmith
The Lepanto Cu–Au deposit, Philippines: A fossil hyperacidic volcanic lake complex The Lepanto Cu–Au deposit, Philippines: A fossil hyperacidic volcanic lake complex
Hyperacidic lakes and associated solfatara in active volcanoes are the expression of magmatic gas expansion from source to surface. Here we show for the first time, that the vein system that comprises the ~ 2 Ma high-sulfidation, Lepanto copper–gold deposit in the Mankayan district (Philippines) was associated with a contemporary hyperacidic volcanic lake complex—possibly the first such...
Authors
Byron R. Berger, Richard W. Henley, Heather A. Lowers, Michael Pribil
Tracing historical trends of Hg in the Mississippi River using Hg concentrations and Hg isotopic compositions in a lake sediment core, Lake Whittington, Mississippi, USA Tracing historical trends of Hg in the Mississippi River using Hg concentrations and Hg isotopic compositions in a lake sediment core, Lake Whittington, Mississippi, USA
Concentrations and isotopic compositions of mercury (Hg) in a sediment core collected from Lake Whittington, an oxbow lake on the Lower Mississippi River, were used to evaluate historical sources of Hg in the Mississippi River basin. Sediment Hg concentrations in the Lake Whittington core have a large 10-15 y peak centered on the 1960s, with a maximum enrichment factor relative to Hg in...
Authors
John E. Gray, Peter C. Van Metre, Michael J. Pribil, Arthur J. Horowitz
Science and Products
Filter Total Items: 21
Measurement of in situ sulfur isotopes by laser ablation multi-collector ICPMS: opening Pandora’s Box Measurement of in situ sulfur isotopes by laser ablation multi-collector ICPMS: opening Pandora’s Box
Laser ablation multi-collector ICPMS is a modern tool for in situ measurement of S isotopes. Advantages of the technique are speed of analysis and relatively minor matrix effects combined with spatial resolution sufficient for many applications. The main disadvantage is a more destructive sampling mechanism relative to the ion microprobe technique. Recent advances in instrumentation...
Authors
William I. Ridley, Michael Pribil, Alan E. Koenig, John F. Slack
Sulfate and sulfide sulfur isotopes (δ34S and δ33S) measured by solution and laser ablation MC-ICP-MS: An enhanced approach using external correction Sulfate and sulfide sulfur isotopes (δ34S and δ33S) measured by solution and laser ablation MC-ICP-MS: An enhanced approach using external correction
Isotope ratio measurements using a multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS) commonly use standard-sample bracketing with a single isotope standard for mass bias correction for elements with narrow-range isotope systems measured by MC-ICP-MS, e.g. Cu, Fe, Zn, and Hg. However, sulfur (S) isotopic composition (δ34S) in nature can range from at least − 40 to +...
Authors
Michael Pribil, William I. Ridley, Poul Emsbo
Steep spatial gradients of volcanic and marine sulfur in Hawaiian rainfall and ecosystems Steep spatial gradients of volcanic and marine sulfur in Hawaiian rainfall and ecosystems
Sulfur, a nutrient required by terrestrial ecosystems, is likely to be regulated by atmospheric processes in well-drained, upland settings because of its low concentration in most bedrock and generally poor retention by inorganic reactions within soils. Environmental controls on sulfur sources in unpolluted ecosystems have seldom been investigated in detail, even though the possibility...
Authors
Carleton R. Bern, Oliver A. Chadwick, Carol Kendall, Michael J. Pribil
Isotopic geochemistry of Panama rivers Isotopic geochemistry of Panama rivers
River water samples collected from 78 watersheds rivers along a 500-km transect across a Late Cretaceous-Tertiary andesitic volcanic arc terrane in west-central Panama provide a synoptic overview of riverine geochemistry, chemical denudation, and CO2 consumption in the tropics. D/H and 18O/16O relationships indicate that bedrock dissolution of andesitic arc crust in Panama is driven by...
Authors
Russell S. Harmon, Gerhard Worner, Michael Pribil, Zoltan Kern, Istvan Forizs, W. Berry Lyons, Christopher B. Gardner, Steven T. Goldsmith
The Lepanto Cu–Au deposit, Philippines: A fossil hyperacidic volcanic lake complex The Lepanto Cu–Au deposit, Philippines: A fossil hyperacidic volcanic lake complex
Hyperacidic lakes and associated solfatara in active volcanoes are the expression of magmatic gas expansion from source to surface. Here we show for the first time, that the vein system that comprises the ~ 2 Ma high-sulfidation, Lepanto copper–gold deposit in the Mankayan district (Philippines) was associated with a contemporary hyperacidic volcanic lake complex—possibly the first such...
Authors
Byron R. Berger, Richard W. Henley, Heather A. Lowers, Michael Pribil
Tracing historical trends of Hg in the Mississippi River using Hg concentrations and Hg isotopic compositions in a lake sediment core, Lake Whittington, Mississippi, USA Tracing historical trends of Hg in the Mississippi River using Hg concentrations and Hg isotopic compositions in a lake sediment core, Lake Whittington, Mississippi, USA
Concentrations and isotopic compositions of mercury (Hg) in a sediment core collected from Lake Whittington, an oxbow lake on the Lower Mississippi River, were used to evaluate historical sources of Hg in the Mississippi River basin. Sediment Hg concentrations in the Lake Whittington core have a large 10-15 y peak centered on the 1960s, with a maximum enrichment factor relative to Hg in...
Authors
John E. Gray, Peter C. Van Metre, Michael J. Pribil, Arthur J. Horowitz