Source: http://community.middlebury.edu/~pryan/research.htm
Timestamp: 2019-04-23 04:55:02+00:00

Document:
Click here for topographic map of Esterillos Terraces sample sites.
Thompson, A.*, Ryan, P.C., Hattori, K.H., Kim, J., 2011, Geochemical and sulfur isotope analysis of Taconic slates: implications for arsenic source and mobility in a bedrock aquifer system. Geological Society of America Abstracts with Programs, Vol. 43, No. 1, p. 106.
Rosenberg, B.*, Bigl, M.F.*, Munroe, J.S., Ryan, P.C., 2011, X-ray diffraction analysis of weathering patterns in high-elevation glacial, periglacial, and eolian sediments in northern Nevada and Utah. Geological Society of America Abstracts with Programs, Vol. 43, No. 1, p. 114.
Rosenberg, B.*, Meyer, E.E., Ryan, P.C., Eberl, D.D., 2011, K-Ar dating of illite-rich rocks in the Champlain Valley, Vermont: an investigation of post-Taconian faulting and fluid flow. Geological Society of America Abstracts with Programs, Vol. 43, No. 1, p. 151.
Brooks, E.*, Kim, J., Ryan, P.C., 2011, Geochemical analysis of groundwater quality in the fractured bedrock aquifer of the town of Craftsbury, NE Vermont. Geological Society of America Abstracts with Programs, Vol. 43, No. 1, p. 107.
Mango, J., Ryan, P.C., 2011, Pyrite as the source of groundwater arsenic in Taconic slates, southwestern Vermont. Geological Society of America Abstracts with Programs, Vol. 43, No. 1, p. 135.
Ryan, P.C., Moen, J.C.*, Corenthal, L.G.*, Chow, D.R.*, Kim, J., 2010, Tetrahedral arsenic (As+5) in antigorite: Geological origin and implications for groundwater quality: SEA-CSSJ-CMS Trilateral Meeting on Clays, Spain, June 2010.
Clark, Arthur*, Smith, Taylor*, Kim, Jon, Ryan, Peter C., Mango, Helen, 2010, Elevated arsenic in domestic wells from the Taconic allochthons in southern Vermont. Geological Society of America Abstracts with Programs, Vol. 42, No. 1, p. 185.
Corenthal, Lilly*, Ryan, Peter C., Kim, Jon, 2010, Arsenic in groundwater wells in glacial drift, north-central Vermont. Geological Society of America Abstracts with Programs, Vol. 42, No. 1, p. 122.
Moen, Jonathan*, Ryan, Peter C., Kim, Jon, 2010, Analysis of arsenic speciation in ultramafic rocks by sequential chemical extraction: implications for Taconian fluid source and modern aquifer contamination. Geological Society of America Abstracts with Programs, Vol. 42, No. 1, p. 122.
Ryan, P.C., Kim, J., Clark, A.L.*, Smith, T.T.*, Chow, D.*, Sullivan, C., Bright, K., 2009, Ultramafic source of arsenic in a fractured bedrock aquifer. Geological Society of America Abstracts with Programs, Vol. 41, No. 7, p. 218.
Ryan, P.C. and Huertas, F.J., 2009, The origin of Fe-kaolin from precursor beidellite and interstratified kaolin-smectite in moist tropical soils. Programs and Abstracts, 14th International Clay Conference, Castellaneta, Italy, June 2009.
Ryan, P.C. and Huertas, F.J., 2009, Insights into the transformation of ferruginous beidellite to K-S and kaolin from synthesis experiments. Programs and Abstracts, 14th International Clay Conference, Castellaneta, Italy, June 2009.
Kim, J., Ryan, P., North, K.*, Bean, J.*, and Davis, L., 2009, Radionuclides, groundwater geochemistry, and hydrogeology above, below, and through the Hinesburg thrust: NW Vermont. Geological Society of America Abstracts with Programs, V. 41, n. 3, p. 21.
Ryan, P.C., Kim, J., Chow, D.*, Sullivan, C., and Bright, K., 2009, Connection between Ordovician mantle metasomatism and arsenic in Vermont groundwater. Geological Society of America Abstracts with Programs, V. 41, n. 3, p. 8.
Brachfeld, S., Manley, P., Gorring, M., and Ryan, P., 2007, Contributions of Sediment Provenance and Sediment Diagenesis to Western Antarctic Peninsula Magnetic Proxy Records. American Geophysical Union, Fall Meeting 2007, abstract #GP21B-04.
Gleason, Michael J.*, Kim, Jonathan, Coish, Raymond and Ryan, Peter C, (2007) Radionuclide-enriched groundwater, Knox Mountain pluton, Vermont: occurrence and lithologic controls, Geological Society of America Abstracts with Programs, v. 39, n. 1, p. 102.
Ryan, Peter C., Coish, Ray, and Joseph*, Kristiaan (2007), Ordovician K-Bentonites in western Vermont : mineralogic, stratigraphic and geochemical evidence for their occurrence and tectonic significance, Geological Society of America Abstracts with Programs, v. 39, n. 1, p. 50.
Sullivan, Colleen*, Bright, Kevin*, Kim, Jonathan, and Ryan, Peter C. (2007) Potential ultramafic-derived arsenic contamination in bedrock water wells in north-central Vermont, Geological Society of America Abstracts with Programs, v. 39, n. 1, p. 71.
North KP*, Kim J, Ryan P. 2005. Evaluation of geologic controls on elevated naturally-occurring radioactivity in bedrock ground water wells, NW Vermont. Geological Society of America 37 (1), 78.
Fisher GB*, Ryan PC. 2005. The ferruginous beidellite to halloysite transition in a tropical soil chronosequence. Clay Minerals Society 43rd Annual Meeting, 41. ** This paper won best student presentation at the meeting.
Cowden S*, Ryan PC, Greenglass N*. 2004. Lead in groundwater derived from a fractured carbonate aquifer (Clarendon Springs Formation), northwestern Vermont. Geological Society of America 36 (2), 66.
Ryan P, Hillier S, Wall A*, Wesolowski M*. 2004. Serpentinite weathering and trace metal mobility in dry tropical forest (NW Costa Rica) and cool temporate grassland (SW England). Geological Society of America 36 (5), 27.
Fisher GB*, Ryan PC. 2004. Clay mineral weathering sequence in a tropical terrace progression, Costa Rica. Geological Society of America 36 (2), 73.
Ryan PC, Hillier S, Wall AJ*. 2003. Trace metal speciation in soils derived from ultramafic rock, northwestern Costa Rica. Geological Society of America 34 (7), 241.
Cook R*, Ryan PC, Miller EK. 2003. Spatial variability in exchangeable calcium concentrations in Vermont spodosols. Geological Society of America 34 (7), 406.
Ryan PC, Hillier S. 2002. Berthierine-chamosite, corrensite and discrete chlorite from evolved verdine and evaporite-associated facies in the Jurassic Sundance Formation, Wyoming, USA. Prog. Abs., Clay Minerals Society, 39th Annual Mtg, Boulder, CO, p. 149.
Cook RC, Ryan PC, 2002. Differentiation of two Quaternary lahars by clay mineralogical, quantitative X-ray diffraction and particle size analyses. GSA Abstracts with Programs v. 34 (5), p. A28. ** This presentation won the best student poster award.
Parris A, Bosley A, Noren A, Bierman P, Lini A, Ryan P. 2002. Holocene flood frequency in New England: Large, episodic events in the sediment record. GSA Abstracts with Programs v. 34.
Carlson HA*, Ryan PC. 2001. Quantitative XRD analysis of spodosols as a means of assessing response to acid deposition. GSA Abstracts with Programs v. 33, p. A362.
Kautz CQ*, Ryan PC. 2001. Formation of multiple halloysitic phases in a neotropical fluvial terrace Sequence. GSA Abstracts with Programs v. 33, p. A437.
Ryan PC, Hillier S. 2001. Paleoenvironmental significance of Fe-Mg clays in sandstones. GSA Abstracts with Programs v. 33, p. A73.
Ryan PC, Kautz CQ*. 2001. Formation of multiple halloysitic phases in a neotropical fluvial terrace sequence. Prog. Abs., Clay Minerals Society, 38th Annual Mtg, Madison, WI, p. 73.
Sullivan MY*, Ryan PC. 2001. Geochemical analysis of sediments in the Ompompanoosuc River near the Elizabeth Mine, South Strafford, Vermont. Geol Soc. America 33 (1).
Nichols D*, Ryan PC. 2001. Hydrothermal origin of Kaolinite at Brandon and Monkton, Vermont. Geol Soc. America 33 (1).
Occurrence of and Lithologic Controls on Naturally Occurring Radioactivity in Groundwater, Northern Half of the Knox Mountain Pluton, Vermont.
Evaluation of a Potential Ultramafic Source of Arsenic Contamination in Bedrock Water Wells in Central Vermont.
Geochemistry and mineralogy of spodosols along an elevational gradient, Bolton Mountain, Vermont.
An evaluation of arsenic sources and extent in ground water in north-central Vermont..
An assessment of the mineralogy and geochemistry of Ordovician K-bentonites in western Vermont.
Soil Geochemistry and mineralogy of the Bartlett Experimental Forest, White Mountains, New Hampshire..
Selective chemical extraction of a series of natural soil specimens, and implications for reagent selectivity.
Trevor Cloak (’05 - Environmental Chemistry).
Selective chemical extraction of a series of clay mineral standards, and implications for reagent selectivity.
Nicole Grohoski (’05 - Environmental Chemistry).
The chemical composition of precipitation and stream outflow in a small watershed in the Breadloaf area, Ripton, Vermont..
Caitlyn Long(’05 - Environmental Chemistry).
Evaluation of geological controls on elevated naturally-occurring radioactivity in bedrock ground water wells, NW Vermont.
Lead in ground water derived from a fractured carbonate aquifer (Clarendon Springs Formation), northwestern Vermont.
Rates of soil mineral formation in a tropical terrace progression, Pacific Coast, Costa Rica.
Evaluation of the Hazen’s Notch Formation as a source of trace metals to streams and soils, northern Vermont.
Geochemical, stratigraphic and structural framework for natural sources of lead and uranium in groundwater in Addison County.
Nora Greenglass (’03). Co-advised with David West.
Geochemical and mineralogical correlation of volcanic ash deposits, northern Chile.
Chemical weathering of serpentinites and trace metal mobility in soils and streams on the Lizard Peninsula, Cornwall, England.
Paleoclimatic record of clay minerals in the John Day Formation, Oregon.
Application of clay mineralogy and chemical analysis to stratigraphic correlation of Quaternary lahars, Mt. Hood.
Trace metal mobility in association with ultramafic rock, East Dover, Vermont.
Mineralogy and origin of the Brandon Residual Formation/Brandon Lignite, Vermont.
Sediment chemistry downstream of the Elizabeth copper mine, S. Strafford, VT.
Modeling snow avalanche spatial and temporal distributions using snow-tel data, western US.
Analysis of soil mineral formation in the wake of the 1980 eruption of Mt. St. Helens.
Heavy metal speciation and chemical weathering of ultramafic rock in Vermont.
Brooke Laundon (’00). Co-advised with Ray Coish.
Mineralogy and geochemistry of the Raasay Ironstone, Inner Hebrides, Scotland.
Geochemical analysis of the logged and old growth forests, Middlebury Vermont.
Geochemical and macrofossil analysis of a lake sediment core as a record of Holocene environmental change in the Ritterbush Pond basin, northern Vermont.
Amanda Ayres (’00). Co-advised with Andrea Lloyd.
Analysis of heavy metals in 2 Vermont wetlands associated with frog malformations.
Geochemistry and mineralogy of iron-oxide acid drainage coatings, Pike Hill Mine, Vermont.
Geochemistry and mineralogy of sulfide-rich mine tailings, Pike Hill Mine, Vermont.
Geochemistry of lateritic sediments in western Montana.

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