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Activity

2025

• CANNIBALIZATION INTERRUPTED BY ERUPTION OF HOTSPOT RHYOLITE: KIMBERLY RHYOLITE, CENTRAL SNAKE RIVER PLAIN, IDAHO, USA
  28 Plumes, Ophiolites and Oceanic Crust: Honoring the Scientific Contributions of John W. Shervais
  Friday, 4 April 2025

  8:00 AM - 12:00 PM

  Balboa/Calaveras

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2024

• OROGENIC COLLAPSE AND EVOLUTION OF THE WESTERN ANATOLIA MIGRATION CORRIDOR
  T202 Climate and Tectonic Interactions from Bedrock to Basins (Posters)
  Tuesday, 24 September 2024

  8:00 AM - 5:30 PM

  Hall D
• HOW TO READ THE OXYGEN ISOTOPE SYSTEM IN CORDILLERAN ARCS: LESSONS FROM 190 MILLION YEARS OF SIERRAN MAGMATISM
  T71 The Changing Cordilleran Margin: Permian through Eocene Tectonism, Magmatism, and General Geology from Western Mexico through Northern California and Eastward
  Sunday, 22 September 2024

  1:30 PM - 5:30 PM

  304A
• OXYGEN ISOTOPES CONSTRAIN THE ORIGIN OF PROTEROZOIC CRUSTAL PROVINCES IN THE SOUTHWESTERN USA
  T21 North American Cordilleran Margin Tectonic Framework: Paleozoic and Precambrian
  Sunday, 22 September 2024

  8:00 AM - 12:00 PM

  304A

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2023

• SUNSTONES: A GEMSTONE FORMED BY A MAGMATIC OR HYDROTHERMAL PROCESS?
  9 Undergraduate Research (Posters)
  Wednesday, 17 May 2023

  8:00 AM - 6:00 PM

  Cargo Room

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2021

• SEARCHING FOR YELLOWSTONE PLUME VS. CASCADE ARC SIGNATURES IN 49-30 MA BASALTIC AND RHYOLITIC ROCKS OF WESTERN OREGON
  T168 Initiation and Evolution of Arc-Forearc Systems in Cascadia and Beyond
  Tuesday, 12 October 2021

  1:30 PM - 5:30 PM

  Portland Ballroom 257 (Hybrid Room)
• TECTONOSTRATIGRAPHIC EVOLUTION OF SW OREGON FROM EARLY EOCENE COLLISION OF SILETZIA TO THE MODERN CASCADIA CONVERGENT MARGIN
  T168 Initiation and Evolution of Arc-Forearc Systems in Cascadia and Beyond
  Tuesday, 12 October 2021

  1:30 PM - 5:30 PM

  Portland Ballroom 257 (Hybrid Room)
• CONTRASTING THE WILDCAT MOUNTAIN AND CROOKED RIVER CALDERAS FROM THE PRE-COLUMBIA RIVER BASALT OREGON PLATEAU USING HIGH-PRECISION ZIRCON PETROCHRONOLOGY
  T67 From the Afar Rift to Alaskan Arcs (and the Oregon Plateau in between): Honoring the Career and Contributions of William K. Hart
  Monday, 11 October 2021

  8:00 AM - 12:00 PM

  Portland Ballroom 254 (Hybrid Room)

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2020

• A MICROANALYTICAL OXYGEN ISOTOPIC AND U-TH GEOCHRONOLOGIC INVESTIGATION OF RHYOLITE PETROGENESIS AT THE KRAFLA CENTRAL VOLCANO, ICELAND
  67 D4. Geochemistry
  Tuesday, 27 October 2020

  1:30 PM - 5:30 PM

  Meeting Rooms

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2019

• REGIONALLY EXTENSIVE, LOW-δ18O SILICIC VOLCANISM IN THE LATE JURASSIC CALIFORNIA ARC: EXTENSION LEAVES ITS MARK
  T164 Rift-Grabens, Volcano-Sedimentary Strata, Plutons, and Transtensional Shear Zones: A Multi-Disciplinary Approach to Reconstructing the Jurassic Cordilleran Margin of the Southwest U.S. (Southern California, Nevada, Arizona, and Northern Mexico)
  Tuesday, 24 September 2019

  8:00 AM - 12:00 PM

  Room 128AB, North Building
• EVALUATING SUBDUCTION CONTRIBUTIONS TO THE SOUTHERN CASCADE ARC: INSIGHTS FROM THE GEOCHEMISTRY OF MAFIC ARC LAVAS AND GORDA PLATE SEDIMENTS
  T184 Subduction Zone Magmatism from Source to Eruption, in the Lab and in the Field: In Honor of Christy Till, GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division Early Career Awardee (Posters)
  Tuesday, 24 September 2019

  9:00 AM - 6:30 PM

  Hall AB, North Building
• VARIATIONS IN MANTLE COMPOSITION AND SUBDUCTION CONTRIBUTIONS TO MAFIC MAGMAS IN THE SOUTHERN CASCADE ARC
  33 Magmatism in the Cascades: Variations in Space and Time
  Friday, 17 May 2019

  8:00 AM - 12:00 PM

  Room C124

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2018

• DEGASSING AND REHYDRATION OF EXPLOSIVE PRODUCTS OF THE 900 BP GLASS MOUNTAIN RHYOLITIC ERUPTION OF MEDICINE LAKE VOLCANO, CALIFORNIA
  270 D41. Volcanology (Posters)
  Wednesday, 7 November 2018

  9:00 AM - 6:30 PM

  Halls J-K
• TRADITIONAL AND NON-TRADITIONAL STABLE ISOTOPES FROM FIVE EL LACO IRON OXIDE ORE BODIES INDICATE A MAGMATIC/MAGMATIC-HYDROTHERMAL GENESIS WITH VARIABLE ALTERATION BY METEORIC WATER
  T151 Geology and Fluid Dynamics of Cr, Ni-Cu-PGE, and PGE Mineralized Magmatic Plumbing Systems
  Tuesday, 6 November 2018

  8:00 AM - 12:00 PM

  Room 233

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2017

• CANNIBALIZATION AND MIXING PROCESSES IN HOTSPOT RHYOLITES: ANOMALOUS TEXTURES AND GEOCHEMISTRY OF THE KIMBERLY MEMBER OF THE CASSIA FORMATION, YELLOWSTONE HOTSPOT TRACK, IDAHO
  T393 Recent Advances in Understanding Volcanism of the Yellowstone Hotspot (Posters)
  Wednesday, 25 October 2017

  9:00 AM - 6:30 PM

  Halls 4EF
• ZIRCON DIVERSITY AND NUMERICAL MODELING ON DIFFERENT SCALES TO UNDERSTAND MAGMA GENESIS IN AREAS OF HOT SPOT-CRUST INTERACTION WITH EMPHASIS ON YELLOWSTONE PLUME
  T239 Recent Advances in Understanding Volcanism of the Yellowstone Hotspot
  Tuesday, 24 October 2017

  1:30 PM - 5:30 PM

  Tahoma 3
• EXPERIMENTALLY CONSTRAINED H AND O ISOTOPE FRACTIONATION BETWEEN WATER AND VOLCANIC GLASS
  T207 Fluids and Melts in Geologic Systems
  Tuesday, 24 October 2017

  8:00 AM - 12:00 PM

  Skagit 2
• HYDROGEN ISOTOPIC COMPOSITION OF ENRICHED MANTLE SOURCES: RESOLVING THE DEHYDRATION PARADOX
  T208 Petrology across the Inner Solar System: In Honor of Roebling Medalist Ed Stolper
  Tuesday, 24 October 2017

  8:00 AM - 12:00 PM

  Skagit 4
• MAGMATIC THERMOMECHANICAL MODELS REVEAL THE ORIGINS OF ISOTOPIC TRENDS IN YELLOWSTONE VOLCANOES
  T239 Recent Advances in Understanding Volcanism of the Yellowstone Hotspot
  Tuesday, 24 October 2017

  1:30 PM - 5:30 PM

  Tahoma 3
• OXYGEN ISOTOPE COMPOSITIONS OF OLIVINE FROM QUATERNARY MAFIC VENTS OF THE GOLDEN TROUT VOLCANIC FIELD, KERN PLATEAU, CA
  274 D35. Petrology, Igneous (Posters)
  Tuesday, 24 October 2017

  9:00 AM - 6:30 PM

  Halls 4EF
• EVALUATING SUBDUCTION COMPONENT CONTRIBUTIONS TO THE SOUTHERN CASCADE ARC: INSIGHTS FROM GEOCHEMICAL ANALYSES OF MONOGENETIC VOLCANO MAFIC LAVAS AND GORDA PLATE SEDIMENTS
  T294 Subduction Top to Bottom 2 (ST2B-2), Cascadia and Beyond (Posters)
  Tuesday, 24 October 2017

  9:00 AM - 6:30 PM

  Halls 4EF
• SHIFT IN THE HYDROLOGIC CYCLE AND RAPID GROWTH OF SUBAERIAL CONTINENTAL CRUST AT ~2.5 GA BASED ON TRIPLE OXYGEN ISOTOPE SYSTEMATICS OF SHALES
  T139 Celebrating Dr. John W. Valley's Contributions to Isotope Geochemistry and Beyond, from the Hadean to the Holocene II
  Monday, 23 October 2017

  1:30 PM - 5:30 PM

  Skagit 2
• TRIPLE OXYGEN AND HYDROGEN ISOTOPES IN SYN-GLACIAL HYDROTHERMALLY ALTERED ROCKS: COMPARISON BETWEEN MODERN ROCKS OF ICELAND AND SNOWBALL EARTH AGE ROCKS FROM THE BALTIC SHIELD
  3 D49. Recent Advances in Precambrian Geology
  Sunday, 22 October 2017

  8:00 AM - 12:00 PM

  Room 3A

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2016

• OXYGEN AND IRON STABLE ISOTOPE SIGNATURES FROM THE MANTOVERDE IRON OXIDE-COPPER-GOLD DISTRICT, CHILE
  T319 Mineral Resources for Society: Honoring the Career and Contributions to Economic Geology of Jean S. Cline (Posters)
  Wednesday, 28 September 2016

  9:00 AM - 6:30 PM

  Exhibit Hall E/F
• IRON OXIDE – APATITE, IRON OXIDE – COPPER – GOLD DEPOSITS AND MAGMAS: A BUBBLY CONNECTION
  T212 Mineral Resources for Society: Honoring the Career and Contributions to Economic Geology of Jean S. Cline
  Tuesday, 27 September 2016

  1:30 PM - 5:30 PM

  Room 301
• UNDERSTANDING THE SOURCES OF SEGMENTATION OF VOLCANIC CENTERS ALONG THE YELLOWSTONE HOTSPOT TRACK: INSIGHTS FROM HIGH RESOLUTION THERMOMECHANICAL MODELING
  3 Cenozoic Volcanism in the Inland Northwestern United States
  Wednesday, 18 May 2016

  8:00 AM - 12:00 PM

  Classroom 029
• OXYGEN ISOTOPE COMPOSITION OF PLAGIOCLASE FROM THE STEENS BASALT, COLUMBIA RIVER BASALT PROVINCE, SE OREGON
  25 Igneous and Metamorphic Petrology (Posters)
  Wednesday, 6 April 2016

  8:30 AM - 12:30 PM

  Ballroom C
• SYSTEMATIC MIDDDLE TO LATE JURASSIC CHANGES IN MAGMA SOURCE IN THE MOJAVE SEGMENT OF CALIFORNIA’S CONTINENTAL ARC
  13 Magma Sources to Volcanoes: Exploring Processes, Volumes, Storage and Inter-Connectivity in Continental Arcs
  Tuesday, 5 April 2016

  8:30 AM - 12:30 PM

  Meeting Room 200 C
• NEW AGE AND GEOCHEMICAL PERSPECTIVE ON LATE JURASSIC DIKE SWARMS OF THE SW MOJAVE
  13 Magma Sources to Volcanoes: Exploring Processes, Volumes, Storage and Inter-Connectivity in Continental Arcs
  Tuesday, 5 April 2016

  8:30 AM - 12:30 PM

  Meeting Room 200 C

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2014

• PLUME-TRIGGERED DELAMINATION AND THE EARLIEST LOW δ18O CALDERA-FORMING ERUPTIONS OF THE YELLOWSTONE PLUME: IMPLICATIONS FOR LARGE 30–40 MA OREGON CALDERAS
  T343 Cenozoic Magmatism and Volcanism in the North American Cordillera
  Wednesday, 22 October 2014

  1:00 PM - 5:00 PM

  306
• A SIMILAR-TO-MODERN PLIOCENE CLIMATE IN CONTINENTAL ALASKA AND YUKON RECORDED BY MULTIPLE WATER ISOTOPE PROXIES: PLANT LIPIDS, WOOD CELLULOSE AND HYDRATED GLASS SHARDS
  T335 Stable and Clumped Isotope Record of Topography, Climate, and Environments: Challenges and Recent Advances
  Wednesday, 22 October 2014

  1:00 PM - 5:00 PM

  204
• ALONG-ARC GEOCHEMICAL VARIATIONS OF CASCADES MAFIC MAGMAS: A ROLE FOR SUBDUCTED SEDIMENT IN THE SOUTHERN ARC?
  T280 Magmatism and Geodynamics within the Cascadia Subduction Zone
  Wednesday, 22 October 2014

  8:00 AM - 12:00 PM

  306
• TESTING THE USE OF δ18O IN EXTRACTED WATER FROM VOLCANIC ASH, KAOLINITE, AND MICA AS A TOOL FOR PALEOCLIMATE AND PALEOALTIMETRY STUDIES: THE SEARCH FOR NEW STANDARDS AND METHODOLOGY
  T227 Stable and Clumped Isotope Record of Topography, Climate, and Environments: Challenges and Recent Advances (Posters)
  Tuesday, 21 October 2014

  9:00 AM - 6:30 PM

  Exhibition Hall C
• GENERATING THE WORLD’S LOWEST MAGMATIC ZIRCON δ18O: MELTING OF INTENSELY HYDROTHERMALLY ALTERED SOURCES AT AUSTURHORN INTRUSIVE COMPLEX, SE ICELAND
  T75 Magmas and Their Sources II: A Tribute to the Distinguished Career of Fred Frey
  Sunday, 19 October 2014

  1:00 PM - 5:00 PM

  205/206
• THE SIGNIFICANCE OF CONTEMPORANEOUS OLIVINE BASALTS AND BASANITES TO COLUMBIA RIVER BASALT GROUP GENESIS – EVIDENCE FOR LITHOSPHERIC DELAMINATION?
  T14 Magmas and Their Sources I: A Tribute to the Distinguished Career of Fred Frey
  Sunday, 19 October 2014

  8:00 AM - 12:00 PM

  205/206
• AGE AND ORIGIN OF THE MALAPAI HILL BASALT, JOSHUA TREE NATIONAL PARK, CALIFORNIA
  5 Petrology, Geochemistry, and Deformation (Posters)
  Monday, 19 May 2014

  8:00 AM - 5:00 PM

  Ballroom B, C, D

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2013

• A MOJAVE PERSPECTIVE ON VOLCANIC-PLUTONIC SYSTEMS IN CALIFORNIA’S MIDDLE JURASSIC ARC
  T119 What Can We Learn About Plutons From Volcanic Rocks and What Can We Learn About Volcanoes From Plutonic Rocks?
  Wednesday, 30 October 2013

  8:00 AM - 12:00 PM

  Room 603
• MICROANALYTICAL EVIDENCE FOR SLUSHBALL EARTH AT 2.4 GA IN SUBGLACIAL, HYDROTHERMALLY-ALTERED ROCKS AND COEVAL SUPERGENE MATERIALS
  130 Special Session: A Life in Earth History from Tectonics to Climate (Posters): The Scientific Legacy of Paul F. Hoffman
  Monday, 28 October 2013

  9:00 AM - 6:30 PM

  Hall D
• PETROLOGY OF THE RHYOLITES IN THE KIMBERLY DRILL CORE, PROJECT HOTSPOT, SNAKE RIVER PLAIN, IDAHO
  T153 Illuminating Felsic Origins: Using Novel Multiple-Method Approaches to Investigate the Birth of Silicic Magmas (Posters)
  Monday, 28 October 2013

  9:00 AM - 6:30 PM

  Hall D
• FROM CRYSTAL TO CRUSTAL-SCALE: ORIGINS OF "NORMAL" AND RECYCLED RHYOLITES, MICRO-ISOTOPIC EVIDENCE AND NUMERICAL MODELS
  T26 Illuminating Felsic Origins: Using Novel Multiple-Method Approaches to Investigate the Birth of Silicic Magmas
  Sunday, 27 October 2013

  8:00 AM - 12:00 PM

  Room 205

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2012

• LOW-δ18O GRANITES OF THE SIERRAN ARC—RECYCLING OF ALTERED VOLCANIC ROCKS
  T128 The Relationship between Silicic Plutons and Ignimbrites: Exploring the Contradictions
  Monday, 5 November 2012

  1:30 PM - 5:30 PM

  208B
• VARIABLE RECYCLING OF ANOMALOUS LOW- δ18O PROTEROZOIC CRUST IN THE ORD MOUNTAINS, MOJAVE DESERT, CA
  T106 Multidisciplinary Studies of Convergent Plate Boundaries (Posters): In Honor of Jason Saleeby, 2012 MGPV Distinguished Geologic Career Awardee
  Monday, 5 November 2012

  9:00 AM - 6:00 PM

  Hall B
• JUVENILE SILICIC MAGMATISM AND CRUST CONSTRUCTION: ICELAND AS A MODEL FOR EARLY-EARTH OR ICELAND AS A UNIQUE PETROGENETIC ENVIRONMENT?
  24 Silicic Volcanism (Posters)
  Friday, 30 March 2012

  8:30 AM - 6:30 PM

  Juarez 1 and 2

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2011

• JUST HOW BIG IS COUGAR POINT TUFF XIII?
  T35 Recent Advances in Studies of Large-Volume Silicic Volcanism: Stratigraphy, Architecture, Evolution (Posters)
  Sunday, 9 October 2011

  9:00 AM - 6:00 PM

  Hall C

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2010

• THE UNREALIZED BEHAVIOR OF MAGMATIC WATER IN A TEMPERATURE GRADIENT: IMPLICATIONS FOR THE MAGMATIC-HYDROTHERMAL TRANSITION IN ARC MAGMATIC SYSTEMS
  T84 Metal-Fertile versus Barren Magmatic Systems at the Arc- to Individual Pluton-Scale: Applying an Improved Understanding of Volatile and Trace-Element Behavior and Experimental Constraints to Petrogenetic Studies
  Monday, 1 November 2010

  8:00 AM - 12:00 PM

  Room 601
• QUATERNARY VOLCANISM on THE KAMCHATKA PENINSULA, NORTHWEST PACIFIC REGION
  55 GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division Special Session
  Sunday, 31 October 2010

  1:30 PM - 5:30 PM

  Room 203
• IGNITING THE SIERRAN ARC: EVOLVING OXYGEN AND HAFNIUM ISOTOPE RATIOS IN THE BASS LAKE TONALITE
  55 New Insights into the Petrology of Mesozoic Cordilleran Batholiths II
  Saturday, 29 May 2010

  1:30 PM - 3:30 PM

  Platinum 2

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2009

• STABLE-ISOTOPE AND PALEOSOL DATA FROM THE PLIO-PLEISTOCENE FISH CREEK-VALLECITO BASIN, SOUTHERN CALIFORNIA: NEW INSIGHTS INTO REGIONAL TECTONICS AND PALEOCLIMATE
  222 Recent Advances in Paleoceanography and Paleoclimatology
  Wednesday, 21 October 2009

  8:00 AM - 12:00 PM

  Portland Ballrooms 251/258
• USING QUARTZ-GARNET OXYGEN ISOTOPE THERMOMETRY TO RECOVER PEAK METAMORPHIC CONDITIONS OF THE CUCAMONGA TERRANE
  246 Petrology, Metamorphic (Posters)
  Wednesday, 21 October 2009

  9:00 AM - 6:00 PM

  Hall A
• DO GLACIATION-DEGLACIATION CYCLES LEAD TO CLUSTERING VOLCANIC ERUPTIONS AND CALDERA FORMATION?
  T15 Supervolcanoes, Ignimbrite Flare-ups, and Their Impacts: Definition, Debate, and New Developments
  Sunday, 18 October 2009

  8:00 AM - 12:00 PM

  B117/118/119
• RARE ISOTOPE INSIGHTS INTO SUPERERUPTION: SULFUR AND TRIPLE OXYGEN ISOTOPE GEOCHEMISTRY OF SULFATE AEROSOLS ABSORBED ON VOLCANIC ASH PARTICLES
  T15 Supervolcanoes, Ignimbrite Flare-ups, and Their Impacts: Definition, Debate, and New Developments
  Sunday, 18 October 2009

  8:00 AM - 12:00 PM

  B117/118/119
• STABLE ISOTOPIC EVIDENCE FOR NEOPROTEROZOIC LIFE ON LAND
  T10 Microbial Mats, Biogeochemical Markers, and Microbial Evolution: The Co-Evolution of Early Earth and Microbial Life
  Sunday, 18 October 2009

  8:00 AM - 12:00 PM

  C124
• PETROLOGIC AND ISOTOPIC INVESTIGATION OF RHYOLITES FROM KARYMSHINA CALDERA, THE LARGEST “SUPER”CALDERA IN KAMCHATKA, RUSSIA
  T41 Supervolcanoes, Ignimbrite Flare-ups, and Their Impacts: Definition, Debate, and New Developments (Posters)
  Sunday, 18 October 2009

  9:00 AM - 6:00 PM

  Hall A
• OXYGEN ISOTOPE STUDY OF ARCHEAN XENOLITHS CONSTRAINS THE SOURCE OF SUPERVOLCANIC RHYOLITES IN THE SNAKE RIVER PLAIN-YELLOWSTONE PLATEAU VOLCANIC PROVINCE
  T41 Supervolcanoes, Ignimbrite Flare-ups, and Their Impacts: Definition, Debate, and New Developments (Posters)
  Sunday, 18 October 2009

  9:00 AM - 6:00 PM

  Hall A
• ORIGIN AND ALTERATION OF TRIASSIC METAVOLCANIC ROCKS IN THE SADDLEBAG LAKE PENDANT, EASTERN SIERRA NEVADA
  9 Igneous and Metamorphic Petrology (Posters)
  Friday, 8 May 2009

  8:30 AM - 5:30 PM
• CHARACTERIZING MAGMA SOURCES AND MIXING BEHAVIOR IN THE JOHN MUIR INTRUSIVE SUITE: INSIGHT FROM THE LAKE EDISON AND INCONSOLABLE PLUTONS
  9 Igneous and Metamorphic Petrology (Posters)
  Friday, 8 May 2009

  8:30 AM - 5:30 PM

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2008

• SMALL PROPORTIONS OF REFILL BUT LARGE PROPORTIONS OF MIXING BETWEEN MAFIC AND SILICIC MAGMAS IN SHALLOW MAGMA CHAMBERS
  14 Mafic-Silicic Magmatism: Crystallization Histories, Magma Interactions, and Eruption Mechanisms I
  Thursday, 20 March 2008

  8:00 AM - 11:30 AM

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2007

• ORIGIN AND EVOLUTION OF SILICIC MAGMATISM AT YELLOWSTONE BASED ON THE ION MICROPROBE ANALYSIS OF ISOTOPICALLY-ZONED ZIRCONS
  T169 The Track of the Yellowstone Hot Spot II: What do Neotectonics, Climate Indicators, Volcanism, and Petrogenesis Reveal about Subsurface Processes?
  Tuesday, 30 October 2007

  1:30 PM - 5:30 PM
• VOLUMINOUS LOW-d18O MAGMAS IN HEISE VOLCANIC FIELD, IDAHO: IMPLICATIONS FOR THE FATE OF YELLOWSTONE HOTSPOT CALDERAS
  T169 The Track of the Yellowstone Hot Spot II: What do Neotectonics, Climate Indicators, Volcanism, and Petrogenesis Reveal about Subsurface Processes?
  Tuesday, 30 October 2007

  1:30 PM - 5:30 PM