---

Activity

2025

• THE EFFECT OF DIFFERENTIATION ON MAGMATIC OXIDATION STATE: A CASE STUDY FROM SOUTH SISTER VOLCANO, OR, USA
  12 Tectonics and Magmatism in the Modern and Ancestral Cascades Volcanic Arc II
  Wednesday, 2 April 2025

  1:30 PM - 5:30 PM

  Balboa/Calaveras

---

2023

• WHY ARE OBSIDIANS CRYSTAL-FREE?
  T152 Creative Contributions in Volcanology and Petrology II: 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

  8:00 AM - 12:00 PM

  319

---

2021

• ADVANCING DIVERSITY, EQUITY, ACCESSIBILITY, AND INCLUSION AT THE SMITHSONIAN’S NATIONAL MUSEUM OF NATURAL HISTORY: UNIQUE OPPORTUNITIES AND CHALLENGES
  T57 Lessons Learned from URGE 2021: Unlearning Racism in the Geosciences (Posters)
  Sunday, 10 October 2021

  2:30 PM - 6:30 PM

  Exhibit Hall A

---

2020

• PETROLOGIC IMAGING OF THE ARCHITECTURE OF MAGMA RESERVOIRS FEEDING CALDERA-FORMING ERUPTIONS
  T175 Building the SZ4D Magmatic Drivers of Eruption Theme: Geologic Evidence from Active and Exhumed Arcs
  Thursday, 29 October 2020

  10:00 AM - 12:00 PM

  Meeting Rooms

---

2019

• SUPERSATURATION NUCLEATION AND GROWTH OF PLAGIOCLASE IN RESPONSE TO ERUPTIVE DECOMPRESSION
  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
• CREATING A STRATOVOLCANO: PETROGENESIS OF THE CONE-BUILDING LAVAS OF SOUTH SISTER VOLCANO, 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
• BREADCRUST BUBBLES: ESTIMATING EXPLOSIVE ERUPTION EXIT VELOCITY THROUGH TEXTURAL ANALYSIS
  14 Crystal Windows into Igneous Processes I
  Wednesday, 15 May 2019

  1:30 PM - 3:30 PM

  Room C124

---

2018

• BREAD CRUSTED BUBBLES: QUANTIFYING THE BRITTLE-DUCTILE TRANSITION IN VOLCANIC CONDUITS
  T18 Features, Processes, and Emplacement of Melted Rock on the Earth and Planets—A Session in Honor of Christopher W. Hamilton, Recipient of the MGPV Early Career Award
  Sunday, 4 November 2018

  8:00 AM - 12:00 PM

  Room 243

---

2012

• TERRESTRIAL SMOKERS: THERMAL SPRINGS DUE TO HYDROTHERMAL CONVECTION OF GROUNDWATER CONNECTED TO SURFACE WATER
  T12 Groundwater–Surface Water Interactions: Advances in Measurement and Modeling Techniques I
  Sunday, 4 November 2012

  8:00 AM - 12:00 PM

  213BC