---

Activity

2024

• THE GOMEZ TUFF REVISTED: THE WORLD'S LARGEST PANTELLERITIC IGNIMBRITE
  25 Distributed Volcanic Fields in Western North America (Posters)
  Thursday, 16 May 2024

  9:00 AM - 5:30 PM

  Grand Ballroom

---

2023

• GEOLOGIC MAP OF THE NORTHEASTERN DAVIS MOUNTAINS, TRANS-PECOS TEXAS
  7 Geologic Mapping in the Rocky Mountains: Evolving Techniques and Challenges (Posters)
  Tuesday, 23 May 2023

  8:00 AM - 6:00 PM

  C/D Ballroom

---

2022

• CONTRASTING MAGMATIC EVOLUTIONS OF THE THREE SISTER VOLCANOES, CENTRAL OREGON CASCADE ARC, USA
  35 D41. Recent Advances in Igneous Petrology and Volcanology
  Sunday, 9 October 2022

  1:30 PM - 5:30 PM

  Mile High Ballroom 4B
• A COMPREHENSIVE TECTONIC/MAGMATIC MODEL FOR CENOZOIC TRANS-PECOS TEXAS AND ADJACENT MEXICO
  9 From Grenvillian Basement to Neotectonics in Northeast Mexico: A 1.3-Billion-Year Journey of Geological Development
  Monday, 14 March 2022

  1:30 PM - 5:30 PM

  Online

---

2020

• HYBRIDIZATION OF MAFIC AND SILICIC MELTS IN POST-CALDERA LAVA OF NEWBERRY VOLCANO, CENTRAL OREGON, USA
  1 Recent Progress in Granites, Rhyolites, and Associated Magmatism
  Monday, 9 March 2020

  8:00 AM - 12:00 PM

  Meeting Room 202AB

---

2019

• CONTRASTING METALUMINOUS AND PERALKALINE SILICIC MAGMATISM IN THE TRANS-PECOS TEXAS MAGMATIC PROVINCE
  27 Rhyolite/Granite Magmatism II
  Tuesday, 26 March 2019

  1:30 PM - 5:45 PM

  Konza Prairie Room

---

2018

• REINTERPRETATION OF SLEEPING LION RHYOLITE AS RHEOMORPHIC TUFF
  13 D1. Volcanology / Petrology / Ore Mineralization (Posters)
  Tuesday, 15 May 2018

  8:30 AM - 6:30 PM

  Outdoor Tents

---

2017

• GEOCHEMICAL EVOLUTION OF THE PARADISE MOUNTAIN CALDERA COMPLEX, DAVIS MOUNTAINS, TRANS-PECOS TEXAS
  1 Advances in Understanding Precambrian to Cenozoic Magmatic and Metamorphic Processes and their Bearing on Lithospheric Evolution of Southern Laurentia
  Monday, 13 March 2017

  8:00 AM - 12:00 PM

  Grand Ballroom G

---

2016

• PAISANO VOLCANO REVISITED: A SECOND PASS AT PAISANO
  T19 Alkaline Rocks: In Honor and Memory of Daniel S. Barker
  Sunday, 25 September 2016

  8:00 AM - 12:00 PM

  Room 205
• PERALKALINE RHYOLITE AND TRACHYTE IN BIG BEND NATIONAL PARK, TEXAS
  T19 Alkaline Rocks: In Honor and Memory of Daniel S. Barker
  Sunday, 25 September 2016

  8:00 AM - 12:00 PM

  Room 205

---

2015

• BASEMENT CONTROL OF ALKALIC FLOOD RHYOLITE MAGMATISM OF THE DAVIS MOUNTAINS VOLCANIC FIELD, TRANS-PECOS TEXAS
  T181 Advances in Crustal Geophysics and Tectonics I: In Honor of G.R. Keller
  Tuesday, 3 November 2015

  8:00 AM - 12:00 PM

  Room 347/348
• MANTLE HETEROGENEITY AND MELTING CONDITIONS IN THE STRAIT OF SICILY RIFT ZONE
  131 Petrology, Igneous (Posters)
  Monday, 2 November 2015

  9:00 AM - 6:30 PM

  Exhibit Hall

---

2013

• IGNEOUS PETROGENESIS IN THE STRAIT OF SICILY RIFT ZONE
  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
• PETROGENESIS OF PERALUMINOUS RHYOLITE OF THE NATHROP DOMES, CENTRAL COLORADO
  2 Cenozoic Magmatism of the San Juan Mountains: Plutons to Volcanoes
  Wednesday, 15 May 2013

  8:30 AM - 11:30 AM

  North Conference Room
• HAND-HELD XRF ANALYSIS OF BASALTIC ARTIFACTS FROM JORDAN
  2 Geochemistry
  Thursday, 4 April 2013

  10:30 AM - 12:00 PM

  Amphitheater 204

---

2012

• FLOOD RHYOLITE MAGMATISM OF THE DAVIS MOUNTAINS, TRANS-PECOS TEXAS
  7 Tectonic History of the Trans-Pecos Region
  Thursday, 8 March 2012

  1:30 PM - 5:00 PM

  Espino A & B

---

2010

• NEOARCHEAN PALEOWEATHERING OF TONALITE AND METABASALT: IMPLICATIONS FOR RECONSTRUCTIONS OF 2.69 GA EARLY SOIL ECOSYSTEMS AND PALEOATMOSPHERIC CHEMISTRY
  103 Precambrian Geology (Posters)
  Monday, 1 November 2010

  8:00 AM - 6:00 PM

  Hall D

---

2009

• GEOCHEMISTRY AND PETROLOGY OF LATE EOCENE CASCADE HEAD AND YACHATS BASALTS AND ALKALIC INTRUSIONS OF THE CENTRAL OREGON COAST RANGE, U.S.A
  33 Petrology, Igneous (Posters)
  Sunday, 18 October 2009

  9:00 AM - 6:00 PM

  Hall A
• THE ORIGIN OF TRACHYTE AND THE “DALY GAP” AT PANTELLERIA, ITALY
  33 Petrology, Igneous (Posters)
  Sunday, 18 October 2009

  9:00 AM - 6:00 PM

  Hall A
• PETROGENESIS OF THE RATON-CLAYTON VOLCANIC FIELD, NORTHEASTERN NEW MEXICO
  33 Petrology, Igneous (Posters)
  Sunday, 18 October 2009

  9:00 AM - 6:00 PM

  Hall A
• BASEMENT STRUCTURES AND RIO GRANDE RIFT MAGMATISM IN WEST TEXAS
  2 Trans-Pecos Volcanic Province
  Monday, 16 March 2009

  8:00 AM - 10:00 AM

---

2008

• Petrogenesis of Trachyandesite from the McDermott Formation, San Juan Basin, Colorado and New Mexico
  193 Mineralogy/Crystallography; Petrology, Experimental; Igneous; Metamorphic (Posters)
  Monday, 6 October 2008

  8:00 AM - 6:00 PM

---

2007

• EARLY ONSET OF RIO GRANDE RIFT MAGMATISM IN WEST TEXAS
  T189 Geological, Geophysical, Geochemical, and Environmental Studies in Big Bend National Park and the Trans-Pecos Region, Texas
  Wednesday, 31 October 2007

  8:00 AM - 12:00 PM
• VOLCANIC GEOLOGY OF THE CERRO CASTELLAN AREA, BIG BEND NATIONAL PARK, TEXAS
  1 Petrology
  Wednesday, 11 April 2007

  10:00 AM - 12:00 PM
• PETROGENESIS OF THE CASCADE HEAD BASALT SERIES, CENTRAL OREGON COAST RANGE
  1 Petrology
  Wednesday, 11 April 2007

  10:00 AM - 12:00 PM
• RECONNAISANCE PETROLOGY OF THE LATE CRETACEOUS MCDERMOTT FORMATION, SW COLORADO
  10 Petrology (Posters)
  Wednesday, 11 April 2007

  1:40 PM - 5:00 PM

---

2006

• AENIGMATITE-ILMENITE-CLINOPYROXENE EQUILBIRA AND APPLICATIONS TO GEOTHERMOMETRY AND OXYGEN BAROMETRY IN PANTELLERITIC MELTS: EXAMPLES FROM PANTELLERIA (ITALY) AND EBURRU (KENYA)
  4 Magmatism in the Eastern US and Beyond: A Symposium in Honor of Paul C. Ragland
  Thursday, 23 March 2006

  8:00 AM - 12:00 PM

---

2004

• LARGE-VOLUME, ALKALIC RHYOLITE SYSTEMS, NORTHEASTERN DAVIS AND BARRILLA MOUNTAINS, TEXAS, U.S.A
  10 Large-volume Ryolites of the Western USA: A Tribute to Bill Bonnichsen (Posters)
  Monday, 3 May 2004

  8:00 AM - 5:00 PM

---

2003

• VARIATIONS IN ALKALI FELDSPAR/MELT TRACE-ELEMENT PARTITIONING DURING FRACTIONATION OF PERALKALIC QUARTZ TRACHYTE-RHYOLITE SUITES
  25 Petrology and Structural Geology
  Friday, 14 March 2003

  1:00 PM - 4:00 PM

---

2002

• VOLCANOLOGY AND PETROLOGY OF BURRO MESA RHYOLITE, SOUTHWESTERN BIG BEND PARK, TEXAS
  6 Geology of Big Bend National Park: What Have We Learned Since Maxwell and Others, 1967?
  Thursday, 11 April 2002

  1:30 PM - 5:30 PM

---

2001

• ORIGIN OF RHYOLITE OF THE OLIGOCENE CONEJOS FORMATION, EAST-CENTRAL SAN JUAN MOUNTAINS, COLORADO
  155 Igneous Petrology (Posters)
  Thursday, 8 November 2001

  8:00 AM - 12:00 PM

---

Date Unknown

• THE INFLUENCE OF WHOLE ROCK CAO CONTENT ON PLAGIOCLASE/MELT SR AND BA PARTITIONING IN RHYOLITE
  100 Geochemistry (Posters)
• FIELD RELATIONS AND GEOCHEMISTRY OF PERALKALIC RHYOLITE DOMES AND FLOWS AND ASSOCIATED MAFIC LAVA, SW CERRO CASTELLON 71/2 MINUTE QUADRANGLE, BIG BEND NATIONAL PARK, TEXAS
  47 Big Bend (Posters)
• ORIGINS OF CONE-FORMING BRECCIAS OF THE SUMMER COON VOLCANO
  4 General Geology and Rio Grande Rift (Posters)
• INFLUENCE OF SANIDINE STRUCTURE ON TRACE-ELEMENT PARTITIONING
  254 Mineralogy/Crystallography (Posters)