| A modern vs. Permian black shale—the hydrography, primary productivity, and water-column chemistry of deposition DZ Piper, RB Perkins Chemical geology 206 (3-4), 177-197, 2004 | 385 | 2004 |
| Solubility of ettringite (Ca6 [Al (OH) 6] 2 (SO4) 3· 26H2O) at 5–75° C RB Perkins, CD Palmer Geochimica et Cosmochimica Acta 63 (13-14), 1969-1980, 1999 | 328 | 1999 |
| Geogenic cadmium pollution and potential health risks, with emphasis on black shale Y Liu, T Xiao, RB Perkins, J Zhu, Z Zhu, Y Xiong, Z Ning Journal of Geochemical Exploration 176, 42-49, 2017 | 206 | 2017 |
| Solubility of Ca6 [Al (OH) 6] 2 (CrO4) 3· 26H2O, the chromate analog of ettringite; 5–75° C RB Perkins, CD Palmer Applied Geochemistry 15 (8), 1203-1218, 2000 | 124 | 2000 |
| Solubility of chromate hydrocalumite (3CaO· Al2O3· CaCrO4· nH2O) 5–75° C RB Perkins, CD Palmer Cement and Concrete Research 31 (7), 983-992, 2001 | 82 | 2001 |
| The relative mobility of trace elements from short-term weathering of a black shale RB Perkins, CE Mason Applied Geochemistry 56, 67-79, 2015 | 81 | 2015 |
| Trace-element budgets in the Ohio/Sunbury shales of Kentucky: constraints on ocean circulation and primary productivity in the Devonian–Mississippian Appalachian Basin RB Perkins, DZ Piper, CE Mason Palaeogeography, Palaeoclimatology, Palaeoecology 265 (1-2), 14-29, 2008 | 79 | 2008 |
| Rare-earth elements in the Permian Phosphoria Formation: Paleo proxies of ocean geochemistry DZ Piper, RB Perkins, HD Rowe Deep Sea Research Part II: Topical Studies in Oceanography 54 (11-13), 1396-1413, 2007 | 54 | 2007 |
| Evolution of thought concerning the origin of the Phosphoria Formation, Western US Phosphate Field JR Hein, RB Perkins, BR McIntyre Handbook of exploration and environmental geochemistry 8, 19-42, 2004 | 32 | 2004 |
| Mineral affinities and distribution of selenium and other trace elements in black shale and phosphorite of the Phosphoria Formation RB Perkins, AL Foster Handbook of Exploration and Environmental Geochemistry 8, 251-295, 2004 | 30 | 2004 |
| As-rich ferric oxyhydroxide enrichments in the shallow subsurface of Bangladesh GN Breit, AL Foster, RB Perkins, JC Yount, T King, AH Welch, JW Whitney, ... Water-Rock Interactions, 1457-1461, 2004 | 19 | 2004 |
| Characterization of natural and synthetic floating iron surface films and their associated waters RB Perkins, ZN Gray, G Grathoff, R Hugo Chemical Geology 444, 16-26, 2016 | 13 | 2016 |
| Geochemistry of Permian rocks from the margins of the Phosphoria Basin: Lakeridge core, western Wyoming RB Perkins, B McIntyre, JR Hein, DZ Piper Open-File Report, 2003 | 13 | 2003 |
| The solubility and thermodynamic properties of ettringite, its chromium analogs, and calcium aluminum monochromate (3CaO· Al2O3· CaCrO4· nH2O) RB Perkins Portland State University, 2000 | 12 | 2000 |
| Geochemical investigation of late pre-contact ceramic production patterns in Northwest Alaska SL Anderson, MT Boulanger, MD Glascock, RB Perkins Journal of Archaeological Science: Reports 6, 200-210, 2016 | 10 | 2016 |
| 13.12 Geochemistry of a Marine Phosphate Deposit: A Signpost to Phosphogenesis DZ Piper, RB Perkins Treatise on Geochemistry (second Edition), 293-312, 2014 | 10 | 2014 |
| The Meade Peak Member of the Phosphoria Formation: temporal and spatial variations in sediment geochemistry RB Perkins, DZ Piper Handbook of Exploration and Environmental Geochemistry 8, 73-110, 2004 | 9 | 2004 |
| An integrated feasibility study of reservoir thermal energy storage in Portland, Oregon, USA J Bershaw, E Burns, TT Cladouhos, AE Horst, B Van Houten, P Hulseman, ... 45th Workshop on Geothermal Reservoir Engineering, Stanford University …, 2020 | 8 | 2020 |
| Composition of the Rex Chert and associated rocks of the Permian Phosphoria Formation: soda Springs area, SE Idaho JR Hein, B McIntyre, RB Perkins, DZ Piper, J Evans Open-File Report, 2002 | 8 | 2002 |
| Geochemistry and geothermometry of breitenbush hot springs, Oregon, USA D Malkemus, RB Perkins, CD Palmer Geothermics 95, 102134, 2021 | 6 | 2021 |
