David Johnston
Harvard University, Cambridge, MA
Activity
2021
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THE SEDIMENTARY GEOCHEMISTRY AND PALEOENVIRONMENTS PROJECT
T158 Life's Innovations from the Early Earth to the Search on Modern Mars: Honoring the Career of Andrew H. Knoll (Posters)Tuesday, 12 October 20219:00 AM - 1:00 PMExhibit Hall A
2020
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ISOTOPIC AND EXPERIMENTAL INSIGHTS ON THE MECHANISMS OF PYRITE OXIDATION
12 Undergraduate Research II (Posters)Friday, 20 March 20208:00 AM - 12:00 PMGrand Ballroom A–D
2017
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THE SEDIMENTARY GEOCHEMISTRY AND PALEOENVIRONMENTS PROJECT: A COMMUNITY-ORIENTED, DATABASE-DRIVEN EFFORT TO TRACK PALEOENVIRONMENTAL CHANGE IN DEEP TIME
174 D15. Paleontology, Biogeography/Biostratigraphy (Posters)Monday, 23 October 20179:00 AM - 6:30 PMHalls 4EF
2016
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TRACKING THE ONSET OF PHANEROZOIC-STYLE REDOX-SENSITIVE TRACE METAL ENRICHMENTS: NEW DATA FROM NEOPROTEROZOIC POST-GLACIAL STRATA IN NW CANADA
T115 Sedimentary, Paleobiologic, and Geochemical Studies of Deep Time Ocean-Climate Perturbations I: Honoring the Scientific Contributions of Michael A. ArthurMonday, 26 September 20168:00 AM - 12:00 PMRoom 402
2015
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THE TRIPLE OXYGEN ISOTOPE COMPOSITION OF MARINE SULFATE: A METRIC FOR ATMOSPHERIC OXYGEN
T280 Geobiology of Critical Transitions: Integrating Fossils, Proxies, and Models IIWednesday, 4 November 20158:00 AM - 12:00 PMRoom 325/326
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A GEOCHEMICAL INVESTIGATION OF OXYGENATION IN THE EARLY EDIACARAN OCEANS AT THE TYPE SECTION OF THE SHEEPED FORMATION, MACKENZIE MOUNTAINS, NORTHWEST TERRITORIES, CANADA
T225 Geobiology of Critical Transitions: Integrating Fossils, Proxies, and Models (Posters)Tuesday, 3 November 20159:00 AM - 6:30 PMExhibit Hall
2014
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SULFIDE STRESS ON ANIMALS IN NEOPROTEROZOIC OCEANS
T258 The Tonian-Cryogenian WorldTuesday, 21 October 20141:00 PM - 5:00 PM220
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A PARAGENETIC MODEL FOR ISOTOPIC VARIABILITY AND BARITE FORMATION IN BASAL EDIACARAN CAP CARBONATES OF MONGOLIA
T26 The Ediacaran-Cambrian Ecosphere (R)evolution: Emerging Records from Central and East AsiaSunday, 19 October 20148:00 AM - 12:00 PM207
2012
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PERSISTENCE OF WIDESPREAD MARINE ANOXIA AFTER NEOPROTEROZOIC OXYGENATION AND ITS EFFECT ON EARLY ANIMAL EVOLUTION AND FOSSIL PRESERVATION
T84 Fossil Preservation, Biological Evolution, and Environmental Change at the Dawn of Animal Radiation: An Examination of Geobiological Events across the Ediacaran–Cambrian Transition IMonday, 5 November 20128:00 AM - 12:00 PM217D
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A BASIN REDOX TRANSECT AT THE DAWN OF ANIMAL LIFE
T84 Fossil Preservation, Biological Evolution, and Environmental Change at the Dawn of Animal Radiation: An Examination of Geobiological Events across the Ediacaran–Cambrian Transition IMonday, 5 November 20128:00 AM - 12:00 PM217D
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THE GEOCHEMICAL AND STRATIGRAPHIC CONTEXT OF EDIACARAN FOSSILS IN NORTHWESTERN CANADA
T84 Fossil Preservation, Biological Evolution, and Environmental Change at the Dawn of Animal Radiation: An Examination of Geobiological Events across the Ediacaran–Cambrian Transition IMonday, 5 November 20128:00 AM - 12:00 PM217D
2011
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THE ORIGIN AND SIGNIFICANCE OF EDIACARAN BARITE IN MONGOLIA
101 Precambrian Geology (Posters)Monday, 10 October 20119:00 AM - 6:00 PMHall C
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CANOPY FLOW MODELS IDENTIFY A SCALING ADVANTAGE FOR LARGE SIZE IN THE MISTAKEN POINT RANGEOMORPHS, THE WORLDS OLDEST COMMUNITY OF MULTICELLULAR EUKARYOTES
T126 The Ediacaran Period: Tectonic, Climatic, and Biological EnigmasMonday, 10 October 20111:30 PM - 5:30 PMRoom 200H-J
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INVESTIGATING GEOCHEMISTRY OF THE WHEELER FORMATION OF UTAH, USA: INSIGHTS INTO THE REDOX ENVIRONMENT OF BURGESS SHALE-TYPE FOSSIL PRESERVATION
T15 New Ideas on Studying Exceptionally Preserved Fossils: What to Do Next?Sunday, 9 October 20118:00 AM - 12:00 PMRoom 205CD
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GEOCHEMICAL CONTROLS ON PHOSPHATIZATION TAPHONOMY IN THE MIDDLE CAMBRIAN
T15 New Ideas on Studying Exceptionally Preserved Fossils: What to Do Next?Sunday, 9 October 20118:00 AM - 12:00 PMRoom 205CD
2010
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NEW INSIGHT INTO THE CHARACTER OF THE NEOPROTEROZOIC CARBON CYCLE
T161 Understanding High-Amplitude Stable Isotope Variations in Proterozoic StrataTuesday, 2 November 20108:00 AM - 12:00 PMRoom 207