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Activity

2025

• WHEN ARE BRACHIOPODS OR CONODONTS MOST USEFUL FOR SR ISOTOPE STRATIGRAPHY OF PALEOZOIC SUCCESSIONS?
  27 The Early Paleozoic of Eastern North America
  Friday, 21 March 2025

  8:00 AM - 10:00 AM

  Appalachian B
• LOCATION MATTERS, OR DOES IT? TESTING CARBON AND OXYGEN ISOTOPIC VARIABILITY FROM ORDOVICIAN CARBONATE LITHOLOGIES: IMPLICATIONS FOR DIAGENETIC OVERPRINTS OF PALEOENVIRONMENTAL RECONSTRUCTIONS
  41 Biogeochemical Cycling of Elements at the Earth’s Surface Across Space and Time (Posters)
  Friday, 21 March 2025

  1:00 PM - 5:00 PM

  Shenandoah ABC
• STABLE CARBON ISOTOPE (Δ13CCARB AND Δ13CORG) EVIDENCE OF THE TOARCIAN OCEAN ANOXIC EVENT FROM CENTRAL ITALY: EVIDENCE FOR A GLOBALLY MIXED TETHYS SEA.
  40 Co-evolution of Life and its Environment: From Biodiversification Events to Mass Extinction and Everything in Between (Posters)
  Friday, 21 March 2025

  1:00 PM - 5:00 PM

  Shenandoah ABC

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2023

• EVOLUTION OF THE DEVONIAN EARTH SYSTEM THROUGH THE LENS OF GEOCHEMISTRY: FROM CARBON CYCLING AND ANOXIA TO PLATE TECTONICS
  T80 The Early Paleozoic III: Radiations, Extinctions, and Environment
  Monday, 16 October 2023

  8:00 AM - 12:00 PM

  304 / 305
• CALCIUM ISOTOPIC CONSTRAINTS ON THE ORIGIN OF THE MID-DARRIWILIAN CARBON ISOTOPE EXCURSION (MDICE)
  T58 The Early Paleozoic II: Radiations, Extinctions, and Environment
  Sunday, 15 October 2023

  1:30 PM - 5:30 PM

  304 / 305

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2022

• ND ISOTOPIC EVIDENCE FOR ENHANCED MAFIC WEATHERING LEADING TO ORDOVICIAN COOLING
  T227 Do Carbon Sources or Sinks Drive the Phanerozoic Carbon Cycle?: Understanding Geobiologic Forcings and Feedbacks
  Wednesday, 12 October 2022

  8:00 AM - 12:00 PM

  506
• CARBON AND SULFUR ISOTOPES: PAIRING PROXIES FROM CARBONATE ROCKS TO CONSTRAIN THE TIMING OF ANOXIA DURING THE LATE DEVONIAN IN THE GREAT BASIN REGION, USA
  T168 Dynamics of Earth’s Climate System and Biogeochemical Cycles in Deep Time (Posters)
  Tuesday, 11 October 2022

  9:00 AM - 1:00 PM

  Exhibit Hall F
• FACTORS AFFECTING 87SR/86SR SIGNAL PRESERVATION IN CONODONT APATITE: A LONG-RANGING DATA COMPILATION AND A CASE STUDY FROM THE ORDOVICIAN OF BALTOSCANDIA
  T198 Radiogenic Isotopes as Tracers of Geologic Processes: Dates, Rates, and Proxies (Posters)
  Tuesday, 11 October 2022

  2:00 PM - 6:00 PM

  Exhibit Hall F
• STRONTIUM (87SR/86SR) AND LITHIUM (δ7LI) ISOTOPIC EVIDENCE FOR SHIFTS IN DEVONIAN WEATHERING PATTERNS: IMPLICATIONS FOR THE EXPANSION OF LAND PLANTS AND THE ONSET OF THE ACADIAN OROGENY
  T80 Advances in Non-Traditional Stable Isotope Measurements and Utility as Proxies in Modern and Paleo-Settings
  Monday, 10 October 2022

  8:00 AM - 12:00 PM

  506
• USING PAIRED CARBON AND SULFUR ISOTOPES FROM CARBONATE ROCKS TO CONSTRAIN THE TIMING OF ANOXIA DURING THE LATE DEVONIAN IN THE GREAT BASIN REGION, USA: IMPLICATIONS FOR CHEMOSTRATIGRAPHIC CORRELATIONS
  35 Correlating the Ordovician: Honoring the Career and Contributions of Stig M. Bergström (Posters)
  Friday, 8 April 2022

  8:00 AM - 12:00 PM

  Junior Ballroom B
• CORRELATING MIDDLE–LATE ORDOVICIAN CARBONATE STRATA ACROSS THE IAPETUS USING STRONTIUM ISOTOPES (87SR/86SR) CALIBRATED TO CONODONT BIOSTRATIGRAPHY
  10 Correlating the Ordovician: Honoring the Career and Contributions of Stig M. Bergström
  Thursday, 7 April 2022

  1:30 PM - 5:30 PM

  North Meeting Room 203/204

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2021

• REVISITING A TREMADOCIAN (EARLY ORDOVICIAN) MASS EXTINCTION EVENT AND OCEAN ANOXIA: NEW INSIGHTS FROM TRACE METAL ABUNDANCES AND URANIUM ISOTOPE COMPOSITIONS OF CARBONATES FROM THE GREAT BASIN REGION, WESTERN USA
  130 D13. Recent Advances in Paleoclimatology/Paleoceanography
  Tuesday, 12 October 2021

  8:00 AM - 12:00 PM

  D137
• HOW ROBUST IS YOUR FAVORITE ANOXIA PROXY? LESSONS WE'RE LEARNING FROM THE LATE DEVONIAN
  T144 Broken Paradigms: Shallow-Water Deposition of Organic-Rich Facies through Earth History
  Tuesday, 12 October 2021

  8:00 AM - 12:00 PM

  B113/B114 (Hybrid Room)
• DID A TECTONIC UPLIFT AND BASALTIC WEATHERING ENHANCE NUTRIENT DELIVERY TO THE MIDDLE ORDOVICIAN OCEANS?
  T141 The Evolution of Early Phanerozoic Oceans: A Geobiological Perspective
  Tuesday, 12 October 2021

  8:00 AM - 12:00 PM

  E145
• IDENTIFYING THE CAUSES OF EARLY PALEOZOIC MASS EXTINCTIONS USING NEW CARBONATE GEOCHEMICAL PROXIES: LOCAL EVIDENCE OF MARINE ANOXIA USING I/CA RATIOS
  T10 New Perspectives on Phanerozoic Mass Extinctions and Environmental Perturbations I
  Sunday, 10 October 2021

  8:00 AM - 12:00 PM

  E143/E144
• PAIRED MIDDLE–LATE ORDOVICIAN CONTINENTAL WEATHERING (87SR/86SR AND ΕND(T)) AND PALEOTEMPERATURE (δ18O) PROXY MEASUREMENTS LINK ENHANCED MAFIC WEATHERING TO GLOBAL COOLING
  T8 Evolution of Earth’s Surface: Honoring Xiao-Ming Liu, Recipient of the 2021 Mineralogy, Geochemistry, Petrology, and Volcanology Division’s Early Geological Career Award
  Sunday, 10 October 2021

  8:00 AM - 12:00 PM

  Portland Ballroom 252 (Hybrid Room)

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2020

• GLOBAL COOLING LINKED TO BASALTIC WEATHERING DURING THE ORDOVICIAN GREENHOUSE–ICEHOUSE TRANSITION
  T179 The Ordovician Earth: New Insights to Environmental and Biotic Responses in the Fossil and Rock Record I
  Thursday, 29 October 2020

  10:00 AM - 12:00 PM

  Meeting Rooms
• SEARCHING FOR THE LATE DEVONIAN KELLWASSER EVENT IN THE GREAT BASIN REGION, USA: WAS ANOXIA THE MAIN DRIVER OF THE LATE DEVONIAN MASS EXTINCTION?
  T76 Co-Evolution of Earth’s Surface Environment and Eukaryotic Life from the Mid-Proterozoic to Early Paleozoic
  Tuesday, 27 October 2020

  1:30 PM - 5:30 PM

  Meeting Rooms
• WAS ANOXIA THE MAIN DRIVER OF THE LATE DEVONIAN MASS EXTINCTION? NEW INSIGHTS USING PAIRED STABLE CARBON AND SULFUR ISOTOPES
  T76 Co-Evolution of Earth’s Surface Environment and Eukaryotic Life from the Mid-Proterozoic to Early Paleozoic
  Tuesday, 27 October 2020

  1:30 PM - 5:30 PM

  Meeting Rooms
• CHASING THE LATE DEVONIAN KELLWASSER EVENT IN THE GREAT BASIN REGION, USA: WAS ANOXIA THE MAIN DRIVER OF THE LATE DEVONIAN MASS EXTINCTION?
  32 Chemostratigraphic, Biotic, and Sedimentologic Changes through Earth History
  Saturday, 21 March 2020

  8:00 AM - 12:00 PM

  Lake Audubon
• DOES FOOLS GOLD TELLS THE TRUTH ABOUT ANOXIA? RETHINKING THE CAUSE OF THE LATE DEVONIAN MASS EXTINCTION USING SULFUR ISOTOPES IN CARBONATES
  50 Chemostratigraphic, Biotic, and Sedimentologic Changes through Earth History (Posters)
  Saturday, 21 March 2020

  1:30 PM - 5:30 PM

  Lake Anne
• SEARCHING FOR EVIDENCE OF LATE DEVONIAN LOCALIZED ANOXIA IN THE GREAT BASIN REGION (SOUTHERN NV, USA): RETHINKING CAUSES OF THE LATE DEVONIAN MASS EXTINCTION
  50 Chemostratigraphic, Biotic, and Sedimentologic Changes through Earth History (Posters)
  Saturday, 21 March 2020

  1:30 PM - 5:30 PM

  Lake Anne

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2019

• DID TACONIC OROGENESIS ENHANCE MAFIC WEATHERING RATES IN THE MIDDLE–LATE ORDOVICIAN? A TEST USING SEAWATER STRONTIUM AND NEODYMIUM ISOTOPES
  T169 Chemostratigraphy: Physical and Temporal Applications
  Tuesday, 24 September 2019

  8:00 AM - 12:00 PM

  Room 224B, North Building
• COORDINATED BIOTIC AND ABIOTIC CHANGE DURING THE GREAT ORDOVICIAN BIODIVERSIFICATION EVENT: DARRIWILIAN ASSEMBLY OF EARLY PALEOZOIC BUILDING BLOCKS
  T68 The Ordovician Earth: Integrated Perspectives on the Fossil and Rock Records
  Sunday, 22 September 2019

  1:30 PM - 5:30 PM

  Room 228AB, North Building
• DID EARLY LAND PLANTS PRODUCE A STEPWISE-CHANGE IN ATMOSPHERIC OXYGEN DURING THE LATE ORDOVICIAN (SANDBIAN ~ 458 MA)?
  T68 The Ordovician Earth: Integrated Perspectives on the Fossil and Rock Records
  Sunday, 22 September 2019

  1:30 PM - 5:30 PM

  Room 228AB, North Building

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2018

• WHERE IS THE LATE DEVONIAN ANOXIC KELLWASSER EVENT ACROSS THE FRASNIAN-FAMENNIAN BOUNDARY?: NEW INSIGHTS FROM THE GREAT BASIN REGION, USA
  T234 Greenhouse to Icehouse Transition: Global Events of the Devonian, Carboniferous, and Early Permian I
  Wednesday, 7 November 2018

  8:00 AM - 12:00 PM

  Room 140
• TESTING WHETHER LATE ORDOVICIAN CARBON ISOTOPE EXCURSIONS RECORD RAPID VARIATIONS IN THE GLOBAL CARBON CYCLE
  18 D7. Stratigraphy, Sedimentation, and Diagenesis (Posters)
  Thursday, 12 April 2018

  1:30 PM - 5:30 PM

  Room 301 DE/Henley Concourse
• STRONTIUM ISOTOPE (87SR/86SR) STRATIGRAPHY OF LOWER DEVONIAN CARBONATE ROCKS FROM THE GREAT BASIN REGION: TESTING SR ISOTOPE METHODS USING CONODONT APATITE AND BULK CARBONATE
  18 D7. Stratigraphy, Sedimentation, and Diagenesis (Posters)
  Thursday, 12 April 2018

  1:30 PM - 5:30 PM

  Room 301 DE/Henley Concourse
• ASSESSING CRITICAL DRIVERS OF THE ORDOVICIAN GREENHOUSE-ICEHOUSE TRANSITION WITH PAIRED STRONTIUM AND NEODYMIUM ISOTOPE STRATIGRAPHY
  4 Evolution of the Taconic Foreland: Insights into Active Margins and Global Climate Change
  Sunday, 18 March 2018

  8:00 AM - 12:00 PM

  Diamond Ballroom II

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2017

• δ13C, δ34S, AND I/CA EVIDENCE FOR ANOXIA AT AN EARLY ORDOVICIAN (TREMADOCIAN) MASS EXTINCTION
  30 Clastics, Carbonates, and Soils (Posters)
  Friday, 31 March 2017

  1:00 PM - 5:00 PM

  James River Ballroom

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2016

• NEODYMIUM (ND) AND STRONTIUM (SR) ISOTOPE EVIDENCE FOR WEATHERING OF ARC VOLCANICS DURING THE ORDOVICIAN GREENHOUSE-ICEHOUSE TRANSITION
  T288 The Early Paleozoic World: Radiations, Extinctions, and Paleoenvironmental Change II
  Wednesday, 28 September 2016

  8:00 AM - 12:00 PM

  Mile High Ballroom 3C
• OXYGENATION AS A DRIVER OF THE GREAT ORDOVICIAN BIODIVERSIFICATION EVENT
  T224 The Early Paleozoic World: Radiations, Extinctions, and Paleoenvironmental Change I
  Tuesday, 27 September 2016

  1:30 PM - 5:30 PM

  Mile High Ballroom 3C