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All abstracts by John Spear in conference series: Goldschmidt

(2023) Micro-Elemental Analysis of Stromatolites Reveal Fe as Potential Biosignature and Remnant of a Lithification Mechanism
Cassady VC, Levene DR, Celestian AJ, Petryshyn VA, Berelson WM, Rasmussen K, Stevenson BS, Spear J & Corsetti FA

(2023) Scientific Drilling at a REE-Mineralised Carbonatite
Goodenough K, Broom-Fendley S, Marks MAW & Spear J

(2023) Investigating Controls on H2 Availability in Groundwaters during Active Serpentinization in the Samail Ophiolite
Templeton AS, Ellison ET, Nothaft DB, Boyd E, Colman D, Fones E, Spear J, Hoehler T, Kubo M & Glombitza C

(2022) Biogenic Stromatolites as Lacustrine Oxygen Oases ~2.7 Ga: Synthesizing Textural and Geochemical Data
Wilmeth DT, Lalonde SV, Berelson WM, Petryshyn VA, Celestian AJ, Beukes N, Awramik S, Spear J, Mahseredjian T & Corsetti FA

(2022) Examining Fe-Cycling in Microbial Mats as a Lithification Mechanism and Possible Stromatolite Biosignature
Petryshyn VA, Berelson WM, Spear J, Cassady VC, Stevenson BS, Rasmussen K, Yang S-C, John SG & Corsetti FA

(2022) Microbiome Structure Influenced by Metal-Oxide Precipitation in Hyporheic Zones Receiving Acid Mine Drainage
Hoagland B, Navarre-Sitchler A, Singha K, Rasmussen K & Spear J

(2020) Inorganic Carbon Limitation and Diversification of Hydrogenotrophic Methanogens in the Samail Ophiolite, Oman
Fones E, Colman D, Kraus E, Templeton A, Spear J & Boyd E

(2019) Characterization of Intact Polar Lipid Biomarkers from a Site of Active, Low-Temperature Serpentinization
Rempfert K, Kraus E, Nothaft D, Spear J, Sepulveda J & Templeton A

(2018) Builders, Tenants and Squatters: Organic Matter Preservation and its Relationship to Stromatolite Formation
Petryshyn V, Bailey J, Stamps B, Spear J, Stevenson B & Corsetti F

(2015) Sulfur Oxidation and Biomineralization Processes in Sulfidic Ice Ecosystems
Templeton A, Lau G, Cosmidis J, Trivedi C, Spear J & Grasby S

(2014) Microbially Induced Sedimentary Structures from a Hypersaline Desert Playa: A First Look
Lynch K, Almaraz N, Rey K, Ritter S, Spear J & Munakata Marr J

(2013) Elemental Sulfur Biomineralization and Preservation in Glacial Sulfide Springs
Templeton A, Lau G, Wright K, Williamson C, Grasby S & Spear J

(2013) Diverse Capacity for 2-Methylhopanoid Production Correlates with Specific Niches
Ricci J, Coleman M, Welander P, Sessions A, Summons R, Spear J & Newman D

(2012) Yellowstone Hot Spring Microbial Communites Fed with Hydrogen and Bicarbonate as a Metabolically Active Analogue for Early Earth Environments
Eydal H, Evreas L & Spear J

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