---

Activity

2025

• LATEST PLEISTOCENE DEGLACIATION OF THE MERCED AND TUOLUMNE RIVER LANDSCAPES, YOSEMITE NATIONAL PARK
  6 Mysteries of the Sierra Nevada (Posters)
  Wednesday, 2 April 2025

  8:00 AM - 5:30 PM

  Sierra Ballroom

---

2023

• IN SITU COSMOGENIC BE-10 AND C-14 EXPOSURE AGE EVIDENCE FOR THE TIMING OF CIRQUE GLACIERS FORMATION IN LYELL CANYON, YOSEMITE DURING THE POST-LAST GLACIAL MAXIMUM DEGLACIATION
  T146 Pleistocene-Holocene Climate Variability of Western North America
  Tuesday, 17 October 2023

  8:00 AM - 12:00 PM

  321
• 150 YEARS OF GLACIER STUDIES IN YOSEMITE NATIONAL PARK: REPRODUCING JOHN MUIR’S 1872 VELOCITY MEASUREMENTS OF THE MACLURE GLACIER
  39 Glacier Change in the Western Cordillera
  Friday, 19 May 2023

  1:30 PM - 4:30 PM

  Whitney Peak Ballroom 3

---

2021

• RAINFALL TRIGGERING OF POST-FIRE DEBRIS FLOWS OVER A 28-YEAR PERIOD NEAR EL PORTAL, CALIFORNIA, USA
  T234 Engineering Geology for the Betterment of Society: Honoring the Legacy of Jerome V. De Graff
  Wednesday, 13 October 2021

  1:30 PM - 5:30 PM

  Portland Ballroom 254 (Hybrid Room)
• RECONSTRUCTING HISTORICAL VOLUME LOSS OF LITTLE ICE AGE GLACIERS IN YOSEMITE NATIONAL PARK
  T111 Mountain Glaciation and Climate Change of the Past and Present II
  Monday, 11 October 2021

  1:30 PM - 5:30 PM

  D139/D140
• DOCUMENTING ROCKFALLS IN YOSEMITE NATIONAL PARK WITH A NEW SPATIALLY ENABLED GEODATABASE AND INTERACTIVE WEB-BASED MAP
  T85 Landslide Hazards: Inventories, Hazard Maps, Risk Analysis, and Warning Systems (Posters)
  Monday, 11 October 2021

  9:00 AM - 1:00 PM

  Exhibit Hall A
• UNDERSTANDING GLACIER THINNING AND RETREAT DURING THE LAST GLACIAL MAXIMUM IN YOSEMITE TO PREDICT CONTEMPORARY DEGLACIATION
  T79 Mountain Glaciation and Climate Change of the Past and Present I
  Monday, 11 October 2021

  8:00 AM - 12:00 PM

  Portland Ballroom 253 (Hybrid Room)
• THE PACE OF DEGLACIATION AND POSTGLACIAL LANDSCAPE RESPONSE IN YOSEMITE VALLEY, CALIFORNIA
  8 Understanding the Sierra Nevada Through New Regional Geologic and Geophysical Syntheses II
  Thursday, 13 May 2021

  8:30 AM - 12:30 PM

  UNR Centers for Transformative Monitoring Programs (CTEMPS) Room

---

2020

• RAINFALL TRIGGERING OF POST-FIRE DEBRIS FLOWS OVER A 28-YEAR PERIOD NEAR EL PORTAL, CALIFORNIA, USA
  T258 GSA Environmental and Engineering Geology Division
  Friday, 30 October 2020

  10:00 AM - 2:00 PM

  Meeting Rooms
• THE CHALLENGE OF PREDICTING ROCKFALL RUNOUTS IN U-SHAPED GLACIAL VALLEYS
  T218 Landslide Hazard and Risk Assessments I
  Thursday, 29 October 2020

  1:30 PM - 5:30 PM

  Meeting Rooms
• INCREASING SCIENCE EDUCATION IN NATIONAL PARKS: A NEW GEOLOGY-FOCUSED AUDIO TOUR ON YOSEMITE NATIONAL PARK'S MOBILE APP
  T64 Geoscience and Hydrology of Your Public Lands: STEM Internships, Research, Science, Mapping, Resource Management, and Education II
  Tuesday, 27 October 2020

  10:00 AM - 12:00 PM

  Meeting Rooms
• PACE OF ROCK FALLS AND CLIFF RETREAT IN YOSEMITE VALLEY, CALIFORNIA, SINCE THE LAST GLACIAL MAXIMUM
  T17 Bedrock Landslide and Rock Fall Deposits and Processes: Insights from the Geologic Record to Today
  Monday, 26 October 2020

  1:30 PM - 5:30 PM

  Meeting Rooms

---

2019

• APATITE 4HE/3HE THERMOCHRONOLOGY AND THE TOPOGRAPHIC DEVELOPMENT OF YOSEMITE VALLEY, CALIFORNIA
  T79 Diversifying Geochronology: Innovations in Techniques, Applications, and Perspectives
  Monday, 23 September 2019

  8:00 AM - 12:00 PM

  Room 225AB, North Building

---

2018

• SILICATE CHEMICAL WEATHERING BENEATH GLACIERS RECORDED BY THE COATING LAYER OF GLACIAL POLISH
  T225 From Alpine Glaciers to Ice Sheets: Understanding Glacial Dynamics, Landscapes, and Environmental Change
  Wednesday, 7 November 2018

  8:00 AM - 12:00 PM

  Room 136-137
• A GEOLOGIST-CLIMBER'S PERSPECTIVE ON THE MANY FACES OF HALF DOME, YOSEMITE NATIONAL PARK, CALIFORNIA
  36 D2. Geology of the Sierra Nevada (Posters)
  Wednesday, 16 May 2018

  8:30 AM - 6:30 PM

  Outdoor Tents
• THE SHAPE OF HALF DOME: 3D STUDIES OF MORPHOLOGY AND DIKING
  36 D2. Geology of the Sierra Nevada (Posters)
  Wednesday, 16 May 2018

  8:30 AM - 6:30 PM

  Outdoor Tents
• WHY IS HALF DOME THERE? TOPOGRAPHIC EFFECT OF LITHOLOGIC VARIATION IN THE HALF DOME GRANODIORITE, YOSEMITE NATIONAL PARK, CALIFORNIA
  36 D2. Geology of the Sierra Nevada (Posters)
  Wednesday, 16 May 2018

  8:30 AM - 6:30 PM

  Outdoor Tents

---

2017

• IMPENDING LOSS OF LITTLE ICE AGE GLACIERS IN YOSEMITE NATIONAL PARK
  T361 Mountain Glaciation and Climate Change of the Past and Present in the Western Americas (Posters)
  Wednesday, 25 October 2017

  9:00 AM - 6:30 PM

  Halls 4EF
• THERMALLY-INDUCED ROCK EXFOLIATION AS A MODULATOR FOR GRANITE DOME WEATHERING
  T212 How, and Under What Conditions, Does Weathering Influence Surface Processes?
  Tuesday, 24 October 2017

  8:00 AM - 12:00 PM

  Chelan 2
• A MICROMETER THICK COATING LAYER SLOWING THE WEATHERING RATE OF GLACIAL POLISH
  T212 How, and Under What Conditions, Does Weathering Influence Surface Processes?
  Tuesday, 24 October 2017

  8:00 AM - 12:00 PM

  Chelan 2
• LATEST PLEISTOCENE AND HOLOCENE LANDSCAPE EVOLUTION OF YOSEMITE VALLEY, CALIFORNIA
  T258 Geology and Hydrology in the National Parks: Research, Mapping, and Resource Management (Posters)
  Tuesday, 24 October 2017

  9:00 AM - 6:30 PM

  Halls 4EF
• QUANTIFYING 40 YEARS OF ROCKFALL ACTIVITY IN YOSEMITE VALLEY WITH STRUCTURE-FROM-MOTION AND TERRESTRIAL LIDAR ANALYSES
  T151 Current Trends in Landslide Monitoring: New Techniques, Methods, Successes, Failures, and Case Studies III
  Monday, 23 October 2017

  1:30 PM - 5:30 PM

  Skagit 5

---

2016

• SPATIAL AND TEMPORAL VARIABILITY IN ROCK DOME EXFOLIATION AND WEATHERING
  T298 Landslides, Debris Flow, and Rock Fall: Processes and Hazards II
  Wednesday, 28 September 2016

  1:30 PM - 5:30 PM

  Room 303
• COMPLEX MORAINE EXPOSURE AGES ON HOLOCENE MORAINES IN THE SIERRA NEVADA: A NEOGLACIAL CONUNDRUM
  3 Spatial and Temporal Variability of California Climate: Implications for Landscape Evolution
  Monday, 4 April 2016

  8:30 AM - 12:30 PM

  Meeting Room 203 AB

---

2015

• WIDE SPAN OF EXPOSURE AGES ON HOLOCENE MORAINES IN THE SIERRA NEVADA: PROCESS OR CLIMATIC CONTROLS?
  T192 Decadal to Century-Scale Proxy Climate Records in High-Altitude and High-Latitude Landscapes
  Tuesday, 3 November 2015

  8:00 AM - 12:00 PM

  Room 340

---

2014

• COSMOGENIC BERYLLIUM-10 EXPOSURE DATING OF THE TILTILL ROCK AVALANCHE IN YOSEMITE NATIONAL PARK
  T308 Landslide Hazard Analysis: Maps, Monitoring, Models, and the Future (Posters)
  Wednesday, 22 October 2014

  9:00 AM - 6:30 PM

  Exhibition Hall C
• USING 3-D MAPPING TO UNDERSTAND BEDROCK CONTROLS ON THE MORPHOLOGY OF EL CAPITAN, YOSEMITE NATIONAL PARK, CALIFORNIA
  T223 Geologic Maps and Their Derivatives (Posters)
  Tuesday, 21 October 2014

  9:00 AM - 6:30 PM

  Exhibition Hall C
• INTERPRETING THE GEOLOGY OF AN ICON: IGNEOUS PETROLOGY, ROCK CLIMBING, AND SCIENCE COMMUNICATION IN YOSEMITE NATIONAL PARK
  T98 GeoCorpsTM America—A Successful Partnership Promoting Individual Professional Development and Application of Geoscience to Management of America’s Public Lands
  Monday, 20 October 2014

  8:00 AM - 12:00 PM

  205/206

---

2013

• COSMOGENIC BERYLLIUM-10 EXPOSURE DATING OF PROBABLE COSEISMIC ROCK AVALANCHES IN YOSEMITE VALLEY, CALIFORNIA
  T277 Landslide Evolution: Long-Term Studies of Landslides and the Realities (or Surprises) They Reveal
  Tuesday, 29 October 2013

  1:00 PM - 5:00 PM

  Room 203
• HISTORICAL ROCK FALLS IN YOSEMITE NATIONAL PARK, CALIFORNIA (1857-2011):  AN UPDATED INVENTORY OF ROCK FALLS AND OTHER LANDSLIDES
  T106 Landslide Inventories, Data Dissemination, and Risk Reduction
  Monday, 28 October 2013

  8:00 AM - 12:00 PM

  Room 501
• RETREAT AND STAGNATION OF LITTLE ICE AGE GLACIERS IN YOSEMITE NATIONAL PARK
  20 Geomorphology and Quaternary Geology
  Tuesday, 21 May 2013

  1:30 PM - 5:30 PM

  Salon D2
• COSMOGENIC NUCLIDE EXPOSURE DATING OF ROCK AVALANCHE DEPOSITS IN YOSEMITE VALLEY, CALIFORNIA
  20 Geomorphology and Quaternary Geology
  Tuesday, 21 May 2013

  1:30 PM - 5:30 PM

  Salon D2
• SUPPORTING EVIDENCE FOR A LARGE ROCK FALL 9.6 ± 1 KA FROM GLACIER POINT IN YOSEMITE VALLEY, CALIFORNIA
  16 Geomorphology and Quaternary Geology (Posters)
  Tuesday, 21 May 2013

  8:00 AM - 12:00 PM

  Salon B/C

---

2011

• CHARACTERIZING BOULDER DEPOSITION TO ASSESS ROCK-FALL HAZARD IN UPPER PINES CAMPGROUND, YOSEMITE NATIONAL PARK, CALIFORNIA
  T81 Landslides and Debris Flows: Understanding Past, Present, and Future Events
  Monday, 10 October 2011

  8:00 AM - 12:00 PM

  Room L100FG

---

2010

• THE 2009 RHOMBUS WALL ROCK FALLS IN YOSEMITE VALLEY, CALIFORNIA: PROGRESSIVE FAILURE DUE TO FRACTURE PROPAGATION
  T207 Landslides, Debris Flow, and Rock Fall: Reaching New Peaks in Research and Monitoring
  Tuesday, 2 November 2010

  1:30 PM - 5:30 PM

  Mile High Ballroom 4AB
• DECONSTRUCTING WATER-SYSTEM TRIGGERING HYPOTHESES FOR ROCK FALLS FROM GLACIER POINT, YOSEMITE NATIONAL PARK
  T207 Landslides, Debris Flow, and Rock Fall: Reaching New Peaks in Research and Monitoring
  Tuesday, 2 November 2010

  1:30 PM - 5:30 PM

  Mile High Ballroom 4AB
• QUANTIFYING THERMALLY INDUCED ROCK FLEXURE AS A POTENTIAL ROCK-FALL TRIGGER
  T83 Motion of Landslides, Debris Flows, and Avalanches
  Monday, 1 November 2010

  8:00 AM - 12:00 PM

  Mile High Ballroom 4AB
• ROCK-FALL INVESTIGATION AND HAZARD ASSESSMENT IN YOSEMITE VALLEY, CALIFORNIA, USING AIRBORNE AND TERRESTRIAL LASER SCANNING DATA
  7 Seeing the True Shape of Earth’s Surface: Applications of Airborne and Terrestrial LiDAR in the Geosciences
  Sunday, 31 October 2010

  8:00 AM - 12:00 PM

  Room 502

---

2009

• MONITORING ROCK FALLS IN YOSEMITE VALLEY WITH THREE-DIMENSIONAL, HIGH-RESOLUTION PANORAMIC IMAGERY
  53 Google Earth to Geoblogs: Digital Innovations in the Geosciences
  Sunday, 18 October 2009

  1:30 PM - 5:30 PM

  Portland Ballrooms 251/258
• QUANTIFYING POST-GLACIAL TALUS DEPOSITION IN YOSEMITE VALLEY USING GIS AND SHALLOW SURFACE GEOPHYSICS
  T44 Geology in the National Parks: Research, Mapping, and Education (Posters)
  Sunday, 18 October 2009

  9:00 AM - 6:00 PM

  Hall A