| The temporal evolution of pedogenic Fe–smectite to Fe–kaolin via interstratified kaolin–smectite in a moist tropical soil chronosequence PC Ryan, FJ Huertas Geoderma 151 (1-2), 1-15, 2009 | 120 | 2009 |
| The origin and diagenesis of grain-coating serpentine-chlorite in Tuscaloosa Formation sandstones, US Gulf Coast PC Ryan, RC Reynolds American Mineralogist 81 (1-2), 213-225, 1996 | 105 | 1996 |
| Identification of halloysite (7 Å) by ethylene glycol solvation: the ‘MacEwan effect’ S Hillier, PC Ryan Clay minerals 37 (3), 487-496, 2002 | 93 | 2002 |
| Stepwise effects of the BCR sequential chemical extraction procedure on dissolution and metal release from common ferromagnesian clay minerals: a combined solution chemistry … PC Ryan, S Hillier, AJ Wall Science of the Total Environment 407 (1), 603-614, 2008 | 85 | 2008 |
| Insights into sequential chemical extraction procedures from quantitative XRD: a study of trace metal partitioning in sediments related to frog malformities PC Ryan, AJ Wall, S Hillier, L Clark Chemical Geology 184 (3-4), 337-357, 2002 | 79 | 2002 |
| Berthierine/chamosite, corrensite, and discrete chlorite from evolved verdine and evaporite-associated facies in the Jurassic Sundance Formation, Wyoming PC Ryan, S Hillier American Mineralogist 87 (11-12), 1607-1615, 2002 | 72 | 2002 |
| The 10 Å to 7 Å halloysite transition in a tropical soil sequence, Costa Rica CQ Kautz, PC Ryan Clays and Clay Minerals 51 (3), 252-263, 2003 | 67 | 2003 |
| The influence of soil age and regional climate on clay mineralogy and cation exchange capacity of moist tropical soils: A case study from Late Quaternary chronosequences in … LN Pincus, PC Ryan, FJ Huertas, GE Alvarado Geoderma 308, 130-148, 2017 | 63 | 2017 |
| The smectite-to-disordered kaolinite transition in a tropical soil chronosequence, Pacific Coast, Costa Rica GB Fisher, PC Ryan Clays and Clay Minerals 54 (5), 571-586, 2006 | 61 | 2006 |
| Parent material and chemical weathering in alpine soils on Mt. Mansfield, Vermont, USA JS Munroe, G Farrugia, PC Ryan Catena 70 (1), 39-48, 2007 | 58 | 2007 |
| Environmental and Low-Temperature Geochemistry P Ryan John Wiley & Sons, 2019 | 54 | 2019 |
| The chemical composition of serpentine/chlorite in the Tuscaloosa Formation, United States Gulf Coast: EDX vs. XRD determinations, implications for mineralogic reactions and … PC Ryan, RC Reynolds Clays and Clay Minerals 45 (3), 339-352, 1997 | 45 | 1997 |
| Ultramafic-derived arsenic in a fractured bedrock aquifer PC Ryan, J Kim, AJ Wall, JC Moen, LG Corenthal, DR Chow, CM Sullivan, ... Applied Geochemistry 26 (4), 444-457, 2011 | 43 | 2011 |
| Cenozoic evolution of the Montana Cordillera: Evidence from paleovalleys JW Sears, PC Ryan Rocky Mountain Section (SEPM), 2003 | 37 | 2003 |
| Reaction pathways of clay minerals in tropical soils: insights from kaolinite-smectite synthesis experiments PC Ryan, FJ Huertas Clays and Clay Minerals 61 (4), 303-318, 2013 | 33 | 2013 |
| Source of arsenic-bearing pyrite in southwestern Vermont, USA: sulfur isotope evidence H Mango, P Ryan Science of the total environment 505, 1331-1339, 2015 | 31 | 2015 |
| Arsenic in a fractured slate aquifer system, New England, USA: influence of bedrock geochemistry, groundwater flow paths, redox and ion exchange PC Ryan, JJ Kim, H Mango, K Hattori, A Thompson Applied Geochemistry 39, 181-192, 2013 | 29 | 2013 |
| Kaolinite and halloysite derived from sequential transformation of pedogenic smectite and kaolinite-smectite in a 120 ka tropical soil chronosequence PC Ryan, FJ Huertas, FWC Hobbs, LN Pincus Clays and Clay Minerals 64 (5), 639-667, 2016 | 25 | 2016 |
| Quantifying the contribution of dust to alpine soils in the periglacial zone of the Uinta Mountains, Utah, USA JS Munroe, ED Norris, PM Olson, PC Ryan, MJ Tappa, BL Beard Geoderma 378, 114631, 2020 | 23 | 2020 |
| The influence of metamorphic grade on arsenic in metasedimentary bedrock aquifers: a case study from western New England, USA PC Ryan, DP West, K Hattori, S Studwell, DN Allen, J Kim Science of the Total Environment 505, 1320-1330, 2015 | 22 | 2015 |
Stephen HillierThe James Hutton InstituteVerified email at hutton.ac.uk