---

Activity

2025

• COMPARING PLAGIOCLASE TEXTURES AND COMPOSITIONS IN LAVAS AND MAGMATIC INCLUSIONS FROM MOUNT HOOD, OREGON
  21 Volcanic and Plutonic Connections in Cordilleran Arcs: Integrating Studies from Extinct and Active Systems (Posters)
  Thursday, 3 April 2025

  8:00 AM - 5:30 PM

  Sierra Ballroom

---

2023

• EVOLUTION OF SILICIC MAGMATISM IN THE TUMALO VOLCANIC CENTER AND THREE SISTERS REGION OF THE CENTRAL OREGON CASCADES DOCUMENTED THROUGH ZIRCON PETROCHRONOLOGY
  T200 Creative Contributions in Volcanology and Petrology III: In Honor of Katharine V. Cashman, Recipient of the 2023 Distinguished Geological Career Award from the Mineralogy, Geochemistry, Petrology and Volcanology Division
  Tuesday, 17 October 2023

  1:30 PM - 5:30 PM

  319
• COPPER AND LITHIUM DIFFUSION IN EASTER OREGON SUNSTONES
  9 Undergraduate Research (Posters)
  Wednesday, 17 May 2023

  8:00 AM - 6:00 PM

  Cargo Room

---

2022

• GEOPHYSICAL AND GEOCHEMICAL CONSTRAINTS ON MAGMA STORAGE DEPTHS ALONG THE CASCADE ARC: KNOWNS AND UNKNOWNS
  T115 Source to Surface Magma Thermodynamics and Transport: Interdisciplinary Approaches to Documenting the How, Where, and When of Magma Generation and Evolution during Ascent, Storage, and Eruption II
  Monday, 10 October 2022

  1:30 PM - 5:30 PM

  502
• WHAT WOULD A LARGE-SCALE COLLABORATIVE RESEARCH ARRAY FOR FIELD GEOSCIENTISTS LOOK LIKE?
  T102 The Virtue of Fieldwork in Volcanology, Sedimentology, Structural Geology, and Tectonics (Posters): A Session to Honor Cathy Busby, MGPV Distinguished Geological Career Award Recipient of 2020
  Monday, 10 October 2022

  9:00 AM - 1:00 PM

  Exhibit Hall F
• THE ERUPTIVE CHRONOLOGY OF THE TUMALO VOLCANIC CENTER, CENTRAL OREGON
  T115 Source to Surface Magma Thermodynamics and Transport: Interdisciplinary Approaches to Documenting the How, Where, and When of Magma Generation and Evolution during Ascent, Storage, and Eruption II
  Monday, 10 October 2022

  1:30 PM - 5:30 PM

  502
• THE ORIGIN OF YOUNGER HARRATS IN WESTERN SAUDI ARABIA
  34 D38. General Topics in Geochemistry
  Sunday, 9 October 2022

  1:30 PM - 5:30 PM

  Mile High Ballroom 4C

---

2021

• THERMOBAR: A CRITICAL EVALUATION OF MINERAL-MELT THERMOBAROMETRY AND HYGROMETRY IN ARC MAGMAS USING A NEW OPEN-SOURCE PYTHON 3 TOOL
  T203 The Life and Times of Arc Volcanoes from Bottom to Top I
  Wednesday, 13 October 2021

  8:00 AM - 12:00 PM

  A106
• AN EXPERIMENTAL REEXAMINATION ON BA ZONING IN SANIDINE: WHAT MAGMATIC PROCESSES IS IT ACTUALLY RECORDING?
  T95 The How, When, Where, and Why of Open-System Magma Processes (Posters)
  Monday, 11 October 2021

  9:00 AM - 1:00 PM

  Exhibit Hall A
• REVEALING THE CONTRASTING HISTORIES OF MAFIC MAGMAS IN THE CENTRAL OREGON CASCADES USING DIFFUSION CHRONOMETRY AND MINERAL CHEMISTRY
  T95 The How, When, Where, and Why of Open-System Magma Processes (Posters)
  Monday, 11 October 2021

  9:00 AM - 1:00 PM

  Exhibit Hall A
• TESTAMENT TO YOUTH IN ZIRCON: NEAR ERUPTION-AGE ZIRCON CRYSTALLIZATION OVER THE PAST 50,000 YEARS AT MT. HOOD, OREGON
  T114 Advances in Undergraduate Research and Education, Colorado Geology, and Igneous Petrology II: Celebrating the 55-Year Career of Reinhard “Bud” Wobus
  Monday, 11 October 2021

  1:30 PM - 5:30 PM

  B113/B114 (Hybrid Room)
• CHARACTERIZING SILICIC MAGMA GENERATION WITHIN CENTRAL OREGON: THE TUMALO VOLCANIC CENTER
  T124 Rhyolites, Take a Bow! Examining the Production of Rhyolite Magma in Continental Arc Settings (Posters)
  Monday, 11 October 2021

  2:30 PM - 6:30 PM

  Exhibit Hall A
• EXPLORING CORRELATIONS BETWEEN TUMALO VOLCANIC CENTER DEPOSITS WITH QUARTZ AND PLAGIOCLASE CATHODOLUMINESCENCE ZONING PATTERNS
  T124 Rhyolites, Take a Bow! Examining the Production of Rhyolite Magma in Continental Arc Settings (Posters)
  Monday, 11 October 2021

  2:30 PM - 6:30 PM

  Exhibit Hall A
• STATISTICAL ANALYSIS OF THE EFFECTS OF SAMPLING BIAS ON THE DISTRIBUTION OF HISTORIC ERUPTIONS AT SIX HIGH-THREAT CASCADES VOLCANOES
  14 Quaternary Volcanic Centers of the Cordillera
  Friday, 14 May 2021

  8:30 AM - 12:30 PM

  Mackay School of Earth Sciences & Engineering Room

---

2019

• CONCEPTUAL MODELS OF ARC MAGMATISM: LOOKING TO THE FUTURE
  T241 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
  Wednesday, 25 September 2019

  8:00 AM - 12:00 PM

  Room 131ABC, North Building
• PETROLOGICAL INSIGHT INTO THE INITIATION OF VOLCANIC ERUPTIONS AT SUBDUCTION ZONE VOLCANOES
  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
• THE INITIATION OF VOLCANIC ERUPTIONS IN THE CASCADE RANGE
  33 Magmatism in the Cascades: Variations in Space and Time
  Friday, 17 May 2019

  8:00 AM - 12:00 PM

  Room C124
• TIMING OF VOLCANISM IN CENTRAL OREGON: DATING THE TAM MCARTHUR RIM VOLCANO
  39 Magmatism in the Cascades: Variations in Space and Time (Posters)
  Friday, 17 May 2019

  9:00 AM - 3:30 PM

  Exhibit Hall B
• PETROLOGY AND GEOCHEMISTRY OF VOLCANIC ROCKS FROM THE BASEMENT BENEATH MOUNT HOOD, CASCADE RANGE, OR
  39 Magmatism in the Cascades: Variations in Space and Time (Posters)
  Friday, 17 May 2019

  9:00 AM - 3:30 PM

  Exhibit Hall B
• GEOCHEMISTRY OF CENOZOIC PLUTONIC ROCKS IN THE WESTERN CASCADES: TRACERS OF ARC EVOLUTION & ORE GENESIS
  33 Magmatism in the Cascades: Variations in Space and Time
  Friday, 17 May 2019

  8:00 AM - 12:00 PM

  Room C124
• DIFFUSION CHRONOMETRY IN SANIDINE: HELPING UNRAVEL THERMAL HISTORIES OF LARGE SILICIC MAGMA RESERVOIRS
  24 Crystal Windows into Igneous Processes (Posters)
  Thursday, 16 May 2019

  9:00 AM - 6:00 PM

  Exhibit Hall B
• GEOCHEMICAL EVOLUTION THROUGH A FULL CALDERA CYCLE: TAUPO VOLCANIC ZONE, NZ
  24 Crystal Windows into Igneous Processes (Posters)
  Thursday, 16 May 2019

  9:00 AM - 6:00 PM

  Exhibit Hall B
• USING DIFFUSION CHRONOMETRY TO PREDICT VOLCANIC BEHAVIOR AT MOUNT HOOD, OR
  24 Crystal Windows into Igneous Processes (Posters)
  Thursday, 16 May 2019

  9:00 AM - 6:00 PM

  Exhibit Hall B
• ANALYZING THE GEOMORPHIC EVOLUTION OF CINDER CONES IN CENTRAL OREGON
  10 Landscape Changes at Various Temporal and Spatial Scales (Posters)
  Wednesday, 15 May 2019

  9:00 AM - 6:00 PM

  Exhibit Hall B
• TIMING AND COMPOSITION OF VOLCANISM AT HARRAT ITHNAYN, WESTERN SAUDI ARABIA
  9 The Yellowstone Hotspot Province: Prehistory, Timing, Extent, Volcanic Products, and Hydrothermal Consequences (Posters)
  Wednesday, 15 May 2019

  9:00 AM - 6:00 PM

  Exhibit Hall B

---

2018

• DOES SIZE MATTER? WHAT VARIABLES CONTROL THE THERMAL HISTORY OF MAGMAS?
  276 D55. From Argon to Zircon: New Approaches to Understanding Crustal Magmatism
  Wednesday, 7 November 2018

  1:30 PM - 5:30 PM

  Room 240-241
• UNDERSTANDING THE LONG-TERM THERMAL CONDITIONS OF MAGMA STORAGE IN THE CRUST: ARE WE THERE YET?
  T89 Magmas Assemble! Petrologic, Geochemical, Chronologic, and Geophysical Insights into the Architecture and Timescales of Magmatic Systems
  Monday, 5 November 2018

  8:00 AM - 12:00 PM

  Room 240-241
• A VOLUMINOUS PULSE OF HOT AND DRY RHYOLITES IN THE CASCADE ARC: THE DESCHUTES FORMATION, CENTRAL OREGON
  T116 Different Personalities of Granites and Rhyolites: Silicic Magmas from the Lower Crust to the Surface (Posters)—A Session in Honor of Calvin Miller, Recipient of the MGPV Distinguished Geological Career Award
  Monday, 5 November 2018

  9:00 AM - 6:30 PM

  Halls J-K
• AGE OF ZIRCON: WHAT IS REALLY BEING RECORDED IN INTERMEDIATE-TO-SILICIC ARC VOLCANIC ROCKS?
  T89 Magmas Assemble! Petrologic, Geochemical, Chronologic, and Geophysical Insights into the Architecture and Timescales of Magmatic Systems
  Monday, 5 November 2018

  8:00 AM - 12:00 PM

  Room 240-241
• PLUTON ROOFS IN ARCS AND EMPLACEMENT MECHANISMS: INSIGHTS FROM THE BLACK PEAK INTRUSIVE COMPLEX, NORTH CASCADES
  T66 Different Personalities of Granites and Rhyolites: Silicic Magmas from the Lower Crust to the Surface II—A Session in Honor of Calvin Miller, Recipient of the MGPV Distinguished Geological Career Award
  Sunday, 4 November 2018

  1:30 PM - 5:30 PM

  Room 240-241
• AGE AND COMPOSITION OF ZIRCON FROM THE MOST RECENT ERUPTIVE PERIODS AT OREGON’S MT. HOOD
  T41 Magmas Assemble! Petrologic, Geochemical, Chronologic, and Geophysical Insights into the Architecture and Timescales of Magmatic Systems (Posters)
  Sunday, 4 November 2018

  9:00 AM - 5:30 PM

  Halls J-K
• TIME SCALES AND TEMPERATURES OF CRYSTAL STORAGE IN MAGMA RESERVOIRS: IMPLICATIONS FOR MAGMA RESERVOIR DYNAMICS
  T14 Different Personalities of Granites and Rhyolites: Silicic Magmas from the Lower Crust to the Surface I—A Session in Honor of Calvin Miller, Recipient of the MGPV Distinguished Geological Career Award
  Sunday, 4 November 2018

  8:00 AM - 12:00 PM

  Room 240-241

---

2017

• ENIGMATIC ALKALINE VOLCANISM IN WESTERN SAUDI ARABIA: SUB-LITHOSPHERIC CHANNELING FROM THE AFAR MANTLE PLUME?
  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
• GEOCHEMICAL EVIDENCE FOR THE DEVELOPMENT OF A GARNET-BEARING CRUSTAL ROOT IN THE CRETACEOUS NORTH CASCADES MAGMATIC ARC, WA
  T140 The Dance of Arcs: Causes of Arc Migrations, Flare-Ups, and Magmatic Focusing II
  Monday, 23 October 2017

  1:30 PM - 5:30 PM

  Skagit 4
• CAN ZIRCONS REALLY RECORD THE THERMAL HISTORY OF MAGMAS?
  T48 Teasing New Information out of (Old) Zircon: In Honor of Dustin Trail, 2017 MSA Recipient
  Sunday, 22 October 2017

  1:30 PM - 5:30 PM

  Skagit 3
• U-PB ZIRCON AGE OF DYKES IN THE ROOF OF THE BLACK PEAK INTRUSIVE COMPLEX, NORTH CASCADES
  8 Petrology, Mineralogy, and Geochemistry (Posters)
  Tuesday, 23 May 2017

  8:30 AM - 5:00 PM

  Room 323A/B/C

---

2016

• STATISTICS AND SEGMENTATION: A ROBUST AND UNBIASED ANALYSIS OF CASCADE ARC VARIABILITY
  T164 Recent Advances in Understanding Magmatism along and within the Northern North American Cordillera (Posters)
  Monday, 26 September 2016

  9:00 AM - 6:30 PM

  Exhibit Hall E/F
• GENESIS OF THE KASKANAK BATHOLITH, AND THE ROLE OF TITANITE AND OTHER ACCESSORY MINERALS ON TRACE ELEMENT DISTRIBUTIONS
  T32 Magmatic-Hydrothermal Ore Deposits: Metal Transport from Source to Sink
  Sunday, 25 September 2016

  1:30 PM - 5:30 PM

  Room 301
• GEOCHEMICAL CHARACTERIZATION OF THE KASKANAK BATHOLITH ASSOCIATED WITH THE PEBBLE CU-AU-MO PORPHYRY DEPOSIT, AND OTHER BARREN CRETACEOUS INTRUSIONS IN THE VICINITY: IMPLICATIONS FOR OF THE UNDERLYING CRUSTAL SECTION
  21 Linking Mesozoic Arcs,Tectonics and Mineral Deposits
  Wednesday, 6 April 2016

  8:30 AM - 12:30 PM

  Meeting Room 200 C
• ORES, MAGMATISM AND TECTONICS OF THE NORTHEASTERN SIERRA NEVADA MOUNTAINS—RECORD FROM THE LIGHTS CREEK COPPER DISTRICT, CALIFORNIA
  21 Linking Mesozoic Arcs,Tectonics and Mineral Deposits
  Wednesday, 6 April 2016

  8:30 AM - 12:30 PM

  Meeting Room 200 C

---

2014

• EXPLOSIVE FLARE-UP FOLLOWING THE LATE NEOGENE INITIATION OF THE CENTRAL OREGON HIGH CASCADE ARC
  T280 Magmatism and Geodynamics within the Cascadia Subduction Zone
  Wednesday, 22 October 2014

  8:00 AM - 12:00 PM

  306
• ZIRCON GEOCHRONOLOGY AND GEOCHEMISTRY OF PLUTONIC ROCKS OF THE WESTERN CASCADES, WASHINGTON AND OREGON
  T307 New Insights on Porphyry Cu-Mo-Au Deposit Genesis, Fertility, and Exploration (Posters)
  Wednesday, 22 October 2014

  9:00 AM - 6:30 PM

  Exhibition Hall C
• THE THERMAL HISTORY OF SHALLOW MAGMA STORAGE
  T180 Continental Arcs #3: Mapping the Temporal and Compositional Evolution of Subvolcanic Magmatic Systems
  Tuesday, 21 October 2014

  8:00 AM - 12:00 PM

  118
• USING ZIRCON-HOSTED MELT INCLUSIONS TO TRACK MAGMA CHAMBER EVOLUTION: A CASE STUDY OF THE 74 KA YOUNGEST TOBA TUFF, SUMATRA
  T213 Continental Arcs #3: Mapping the Temporal and Compositional Evolution of Subvolcanic Magmatic Systems (Posters)
  Tuesday, 21 October 2014

  9:00 AM - 6:30 PM

  Exhibition Hall C
• CRYSTAL MUSH STORAGE CONDITIONS ACROSS THE CASCADE RANGE INFERRED FROM ZIRCON AGE AND TRACE ELEMENT COMPOSITIONS
  T180 Continental Arcs #3: Mapping the Temporal and Compositional Evolution of Subvolcanic Magmatic Systems
  Tuesday, 21 October 2014

  8:00 AM - 12:00 PM

  118
• TRACE ELEMENT AND TEXTURAL CHARACTERISTICS OF OLIVINE IN KILAUEA IKI PICRITES
  T131 Magmas and Their Sources: A Tribute to the Distinguished Career of Fred Frey (Posters)
  Monday, 20 October 2014

  9:00 AM - 6:30 PM

  Exhibition Hall C

---

2013

• NAVIGATING COMPLEXITY: IN-SITU AND SINGLE-MINERAL STUDIES OF INTERMEDIATE MAGMAS
  T405 Microanalysis of Trace Elements and Isotopes in Igneous Petrology: Applications to Genesis, Storage, Evolution, Transport, and Eruption of Magma
  Wednesday, 30 October 2013

  1:00 PM - 5:00 PM

  Room 303
• ZIRCON COMPOSITIONAL EVIDENCE FOR SULFUR-DEGASSING FROM ORE-FORMING ARC MAGMAS
  T315 Recent Advances and Applications of Isotope Geochemistry and Geochronology to Ore Deposit Studies
  Wednesday, 30 October 2013

  8:00 AM - 12:00 PM

  Room 303
• GEOCHEMISTRY AND U-PB ZIRCON GEOCHRONOLOGY OF THE KASKANAK BATHOLITH, PEBBLE PORPHYRY CU-AU-MO DEPOSIT, ALASKA
  T234 Recent Advances and Applications of Isotope Geochemistry and Geochronology to Ore Deposit Studies (Posters)
  Tuesday, 29 October 2013

  9:00 AM - 6:30 PM

  Hall D
• TIME SCALES AND THERMAL CONDITIONS OF MAGMA STORAGE IN THE CRUST: INSIGHTS FROM CRYSTAL RECORDS
  T87 Processes and Timescales of Magma Evolution in the Crust: Insights from the Past Fifty Years and Approaches for the Next Fifty Years
  Sunday, 27 October 2013

  1:00 PM - 5:00 PM

  Room 205

---

2011

• RECONCILING CRYSTAL RESIDENCE AGES IN ANDESITIC VOLCANOES: AN EXAMPLE FROM MOUNT HOOD, OR
  15 Geochemistry of Igneous Rocks: From Small Scales to Big Pictures
  Thursday, 19 May 2011

  8:00 AM - 12:00 PM

  Juniper
• VOLCANOLOGY AND PETROLOGY OF AN ENIGMATIC BACKARC VOLCANO ON THE BOLIVIAN ALTIPLANO: IMPLICATIONS FOR NON-SUBDUCTION RELATED VOLCANISM
  19 Geochemistry of Igneous Rocks: From Small Scales to Big Pictures (Posters)
  Thursday, 19 May 2011

  8:00 AM - 6:00 PM

  Grand Ballroom

---

2009

• ONSET OF AN ARC: DETRITAL ZIRCONS IN EOCENE SEDIMENTS FROM THE OREGON COAST RANGE
  T253 Tectonics and Basins of Convergent Margins (Posters)
  Wednesday, 21 October 2009

  9:00 AM - 6:00 PM

  Hall A
• A TECTONIC MODEL FOR EARLY PLIOCENE MAGMATISM IN THE CENTRAL OREGON CASCADES: THE ERUPTION OF SNOW PEAK HAOT LAVAS
  T110 Multidisciplinary Studies of Cascade Volcanism and its Tectonic Setting (Posters)
  Monday, 19 October 2009

  9:00 AM - 6:00 PM

  Hall A
• VOLATILE (H2O, CO2, S, CL) CONCENTRATIONS AND THE LOW EXPLOSIVITY OF CALC-ALKALINE ANDESITES FROM MOUNT HOOD VOLCANO, OREGON
  T18 Multidisciplinary Studies of Cascade Volcanism and its Tectonic Setting I
  Sunday, 18 October 2009

  8:00 AM - 12:00 PM

  E143/144
• MAGMA STORAGE TIMESCALES OF RECENTLY-ERUPTED MAGMAS AT MT HOOD VOLCANO, OREGON
  T18 Multidisciplinary Studies of Cascade Volcanism and its Tectonic Setting I
  Sunday, 18 October 2009

  8:00 AM - 12:00 PM

  E143/144

---

2008

• USING COMBINED GEOCHEMICAL AND TEXTURAL QUANTIFICATION OF CRYSTAL POPULATIONS TO CONSTRAIN MAGMA CHAMBER PROCESSES IN SILICIC VOLCANOES: AN EXAMPLE FROM MOUNT HOOD, OREGON
  18 Mafic-Silicic Magmatism: Crystallization Histories, Magma Interactions, and Eruption Mechanisms II
  Thursday, 20 March 2008

  1:30 PM - 4:30 PM

---

2007

• ORIGIN OF PB ISOTOPE VARIATIONS IN FE-MN CRUSTS FROM THE IZU-BONIN FOREARC
  29 Undergraduate Research (Posters)
  Thursday, 12 April 2007

  1:40 PM - 5:00 PM
• PETROGENESIS OF WEST GREENLAND PICRITES: A MELT INCLUSION PERSPECTIVE
  10 Petrology (Posters)
  Wednesday, 11 April 2007

  1:40 PM - 5:00 PM

---

2005

• ISOTOPIC EVIDENCE FOR THE MULTIPLE SOURCES OF LEAD IN PORPHYRY CU-MO AND BASE METAL LODE ORES AT BUTTE, MONTANA
  T138 Sources of Porphyry Copper Deposits: Magmas, Metals, and Fluids II
  Tuesday, 18 October 2005

  8:00 AM - 12:00 PM

---

2003

• DISCOVERY OF PRIMITIVE ‘KOMATIITOID’ LAVAS FROM THE MARIANA ARC MAGMATIC FRONT
  62 Volcanology and Igneous Petrology
  Monday, 3 November 2003

  8:00 AM - 12:00 PM

---

Date Unknown

• HIGH SULFUR CONCENTRATIONS FROM OLIVINE-HOSTED ABSAROKITE MELT INCLUSIONS, CASCADE RANGE, OREGON: SIGNS OF AN OXIDIZED SOURCE?
  152 Petrology, Igneous (Posters)
• THE RELATIONSHIP BETWEEN BASALTINC MELT INCLUSIONS AND THEIR HOST HIGH AN PLAGIOCLASE: THE SIGNIFICANCE OF TRACE ELEMENT DIVERSITY IN MORB PLAGIOCLASE
  T118 Petrologic Mineralogy—The Study of Minerals in Context (Posters): In Honor of Charles V. Guidotti
• COSMOGENIC CHLORINE-36 AGES FOR THE 1975 AND 1984 ERUPTIONS OF MAUNA LOA, HAWAII
  127 Petrology and Volcanology (Posters)