Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Peter C. Ryan"'
Autor:
Jonathan J. Kim, Peter C. Ryan, Timothy Schroeder, Edwin Romanowicz, David Boutt, Marcel Belaval, James Shanley
Publikováno v:
Frontiers in Water, Vol 5 (2023)
Between 2016 and 2019, the Vermont Department of Environmental Conservation discovered that groundwater from over 50% (355/628) of wells and springs in the Bennington area had perfluorooctanoic acid (PFOA) concentrations > 20 parts/trillion (ppt) (Ve
Externí odkaz:
https://doaj.org/article/aa8d688fbb994d579995b2a3c7a47322
Publikováno v:
Clays and Clay Minerals. 67:488-506
When present at elevated levels in drinking water, arsenic is toxic, and magnesian clays are gaining recognition as a source of elevated arsenic in groundwater. In the crust and upper mantle of Earth, arsenic incorporation into clay minerals is influ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd2901a0b8298ccd7471975c2fdd85dd
https://doi.org/10.1007/s42860-019-00040-1
https://doi.org/10.1007/s42860-019-00040-1
Publikováno v:
Geoarchaeology. 34:322-335
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40316920d9ca199dd392c3df00f2fa09
https://doi.org/10.1002/gea.21713
https://doi.org/10.1002/gea.21713
Autor:
Keith A. Klepeis, Peter C. Ryan, Edwin Romanowicz, Jonathan J. Kim, George Valentine, Alexandra Cobb
Publikováno v:
Geological Society of America Abstracts with Programs.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48183d57bf5ef57f747e4320a22d4685
https://doi.org/10.1130/abs/2020se-344520
https://doi.org/10.1130/abs/2020se-344520
Publikováno v:
Geological Society of America Abstracts with Programs.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a4907cc0165ce472650a17d1b77d731
https://doi.org/10.1130/abs/2020se-344987
https://doi.org/10.1130/abs/2020se-344987
Publikováno v:
Geoderma. 308:130-148
Tropical soils exhibit large differences across landscapes in many attributes, notably clay mineralogy (2:1 vs. 1:1 clays), bulk geochemistry (Ca, Al), pH, cation exchange capacity (CEC), organic matter and soil texture. In order to examine the facto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f49a9f15283dfb3698dd17b3ca9d81b6
https://doi.org/10.1016/j.geoderma.2017.08.033
https://doi.org/10.1016/j.geoderma.2017.08.033
Publikováno v:
CATENA. 203:105324
This project investigated the origin of clay minerals in regolith present above quartzite bedrock in the alpine zone of the Uinta Mountains, Utah, USA. Geochemical and mineralogical analysis indicates that these clays formed through chemical weatheri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::654851d8d46665ad8ec79ccc68cd5927
https://doi.org/10.1016/j.catena.2021.105324
https://doi.org/10.1016/j.catena.2021.105324
Autor:
Donald S. Ross, Julia Perdrial, Kristen L. Underwood, Nicolas Perdrial, Peter C. Ryan, Alex Gagnon, Malayika Cincotta, James B. Shanley, Jesse Armfield, Jack Ehrenkranz
Publikováno v:
Frontiers in Earth Science, Vol 6 (2019)
Stream water pH and composition are widely used to monitor ongoing recovery from the deposition of strong anthropogenic acids in many forested headwater catchments in the northeastern United States. However, stream water composition is a function of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c33fcb1aa02ea7f4671551974e1d5ec3
https://doi.org/10.3389/feart.2018.00246
https://doi.org/10.3389/feart.2018.00246
Autor:
Marcel Belaval, David F. Boutt, Peter C. Ryan, Timothy Schroeder, Jonathan J. Kim, Edwin Romanowicz
Publikováno v:
Geological Society of America Abstracts with Programs.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b835da9a1434a83ec6d6076ca734fba6
https://doi.org/10.1130/abs/2019ne-328058
https://doi.org/10.1130/abs/2019ne-328058
Publikováno v:
Clays and Clay Minerals. 64:639-667
Tropical soils range from nutrient-depleted lateritic soils rich in halloysite or kaolinite to Inceptisols rich in interstratified kaolinite-smectite (K-S), smectite, or related 2:1 clays. Given the strong influence of clay minerals on tropical soil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bfa886fc55059ee6a135abaf8e00334
https://doi.org/10.1346/ccmn.2016.064030
https://doi.org/10.1346/ccmn.2016.064030