All abstracts by Clark M. Johnson in conference series: Goldschmidt

(2014) Experimental Calibration of Mg Isotope Fractionation between Dolomite and Aqueous Mg²⁺ Ions
Li W, Beard B & Johnson C

(2014) Initial ⁸⁷Sr/⁸⁶Sr Ratios of 3.2 Ga Barite Reveal Input of Sr Derived from Weathering of Archean Crust
Satkoski A, Beard B, Coleman M & Johnson C

(2012) Iron Isotope Fractionation in Stromatolitic Oncoidal Iron Formation, Mesoarchean Witwatersrand-Mozaan Basin, South Africa
Smith A, Beukes N, Gutzmer J, Johnson C & Czaja A

(2012) Stable Iron Isotope Fractionation between Aquoeus Fe(II) and Smectite
Wu L, Beard B, Neumann A, Scherer M, Roden E & Johnson C

(2012) Early Archean Fe Oxidation Revealed by Meso- and Micron-Scale Fe Isotope Analyses of the 3.7-3.8 Ga Isua BIFs
Czaja A, Johnson C, Beard B & Moorbath S

(2012) Fe Isotope and U-Th-Pb Evidence for a Reduced 3.4 Ga Archean Ocean
Li W, Johnson C, Beard B & van Kranendonk M

(2012) From Mineral Interfaces to 200 Million Tons per Year: A Geologic Perspective of the Surface-Catalyzed Iron Redox Cycle
Johnson C

(2012) Fe Electron Transfer and Atom Exchange at Mineral/Water Interfaces
Scherer M, Latta D, Pasakarnis T, Neumann A, Barger M, Rosso K & Johnson C

(2012) Iron Isotope Fractionation during Femtosecond Laser Ablation of Magnetite Determined by Aerosol Size Sorting Experiments
Beard B, Czaja A, Li W, Schauer J, Olson M & Johnson C

(2012) The Evolution of Magmas at a Large Stratocone Volcano, Mount Shasta, N. California
Wende AM, Ziechert TA, Johnson CM, Beard BL, Christiansen RL & Calvert AT

(2011) Rejuvenation of an Old Magmatic System at Parinacota Volcano, Chile
Hora JM, Wörner G, Kronz A, Banaszak M, Singer BS & Johnson CM

(2010) Sr Isotopes in Banded Iron Formation Carbonates: Disequilibrium with Ancient Seawater
Ludois J, Heimann A, Johnson C, Beard B, Valley J, Roden E, Spicuzza M & Beukes N

(2010) Does Low Temperature and/Or Life Demand Disequilibrium? An Fe Isotope Perspective
Johnson C

(2010) Iron Isotopes Reveal an Abiological Origin for a 2.75 Ga BIF from the Yilgarn Craton, Western Australia
Czaja AD, Johnson CM, Beard BL & Van Kranendonk MJ

(2010) Isotopic Compositions of Archean and Proterozoic Rocks: Paleo-Ocean Proxies or Microbial Cycling?
Johnson C

(2010) Equilibrium Iron Isotope Fractionation between Fe(II) and Hydrous Ferric Oxide
Wu L, Beard B, Roden E & Johnson C

(2010) Redox Behavior of Nanoscale Fe Oxides: Stable Isotope Investigations
Scherer M, Handler R, Gorski C, Beard B, Johnson C & Rosso K

(2010) Mg Isotope Exchange Rate and Fractionation Factor between Epsomite and Aqueous Solution Constrained by Three Isotope Method
Li W, Beard B & Johnson C

(2009) Experimental Determination of the Fe Isotope Fractionation between Fe(II) and Goethite
Beard B, Handler R, Johnson C & Scherer M

(2009) More Precise Than Ice: Radioisotopic Dating of the Laschamp Excursion
Singer B, Guillou H, Jicha B, Laj C, Kissel C, Beard B & Johnson C

(2009) Sm-Nd Geochronology of the Zermatt-Saas Ophiolite, Northern Italy
Springer K, Lapen T, Baumgartner L, Johnson C & Beard B

(2009) The Role of Microbial Processes in Banded Iron Formation (BIF) Genesis as Constrained by Fe, C, and O Isotopes in BIF Carbonates
Heimann A, Johnson C, Beard B, Valley J & Spicuzza M

(2009) Fe, S, and C Isotopes Record Great Microbial Diversity in the Neoarchean
Johnson C, Yamaguchi K, Poulson S, Ohmoto H & Beard B

(2008) Deciphering Crust vs. Mantle Inputs and Timescales of Magma Genesis at Mount Adams Using ²³⁸U-²³⁰Th Disequilibria and Os Isotopes
Jicha B, Johnson C, Hildreth W, Beard B, Hart G, Shirey S & Singer B

(2008) The Role of Volatile Exsolution and Sub-Solidus Fluid/Rock Interactions in Producing High ⁵⁶Fe/⁵⁴Fe Ratios in Siliceous Igneous Rocks
Heimann A, Beard B & Johnson C

(2008) Temporal Variations in Fe Isotope Compositions of Banded Iron Formations Record Changes in the Nature of Redox Cycling
Johnson C, Beard B & Roden E

(2008) Iron Isotope Compositions of Carbonatites Record Melt Generation and Late-Stage Volatile-Loss Processes
Beard B, Johnson C & Bell K

(2007) Garnet Growth in the Zermatt-Saas Fee Eclogites
Skora S, Baumgartner L, Mahlen N & Johnson C

(2007) Mechanisms of Fe Isotope Fractionation during Dissimilatory Fe(III) Reduction by S. putrefaciens and G. Sulfurreducen
Crosby H, Roden E, Johnson C & Beard B

(2007) Successes and Failures of Garnet Lu-Hf and Sm-Nd Geochronology: Examples in Eclogites from the Western Alps
Mahlen N, Johnson C, Baumgartner L, Skora S, Lapen T & Beard B

(2007) Lu-Hf Age and Isotope Systematics of the Dora Maira Nappe, Western Alps
Lapen T, Johnson C & Beard B

(2007) Iron Isotopes Constrain the Roles of Biologic and Abiologic Processes in Formation of Banded Iron Formations
Johnson C, Beard B, Klein C, Beukes N & Roden E

(2007) Shallow Crystallization and Deep Magma Storage: Insights from U-Th and ⁴⁰Ar/³⁹Ar Geochronology
Jicha B, Singer B, Johnson C, Beard B & Hora J

(2007) Coupled C-S-Fe Isotope Variations in Archean-Paleoproterozoic Shales Trace Microbial Metabolisms and Redox State in the Early Earth
Yamaguchi K, Johnson C, Beard B, Poulson S & Ohmoto H

(2007) Fe Isotopes in Siliceous Igneous Rocks: Evidence for Fluid-Rock Interaction in Plutons
Heimann A, Beard B & Johnson C

(2006) Tracing metasomatic and crystallization processes in the mantle through Fe isotopes
Johnson C & Beard B

(2003) The Modification of Hydrothermal Fe-Isotopic Signature during Plume-Processes
Severmann S, German C, Edmonds H, Beard B & Johnson C

(2002) Experimental Constraints on Fe Isotope Fractionations during Biogeochemical Cycling of Fe
Johnson C, Beard B, Welch S, Croal L, Newman D & Nealson K

(2002) Iron Isotope Constraints on Fe Cycling and Mass Balance in the Oxygenated Earth
Beard B, Johnson C & Karen VD

(2002) Lu-Hf Geochronology of UHP Metamorphism in the Zermatt-Saas Ophiolite, Lago di Cignana, Italy
Lapen TJ, Mahlen NJ, Johnson CM, Beard BL & Baumgartner LP

(2002) Development of an Iron Isotope Biosignature for Anaerobic Photosynthetic Fe(II) Oxidizing Bacteria
Croal LR, Johnson C, Beard B, Welsch S, Poulson R & Newman DK