Columbia River basalts
Folded and faulted Columbia River Basalt flows, Columbia Gorge by M.J. Brunengo

2019 GSA Cordilleran Section

115th Annual Meeting

15–17 May 2019 | Portland, Oregon USA


Meeting Co-Chairs: Martin Streck, | Jim O’Connor,



Call for Proposals

Deadline: 20 July

We are excited to announce that the GSA 2019 Cordilleran Section Meeting will be held in Portland, Oregon – the city of Roses, where the Cascade Range meets the Columbia River – that is known for its restaurants, microbreweries, and coffee shops, as well as its proximity to all that nature offers.

For this meeting, we are seeking proposals for Technical Sessions, Field Trips, Short Courses, and Workshops.

Proposal submissions must include:

  • Title of Session/Field Trip/Short Course/Workshop
  • Principal organizer (name, affiliation, and email)
  • Co-organizers (names, affiliations, and emails), if applicable
  • Identification of proposal as Theme Session, Symposium, Field Trip, Short Course, or Workshop
  • Preference for format (oral, poster, or both), if applicable
  • Short description (50 words or fewer)
  • Please Submit your proposal electronically using the button above, or email your submissions to the appropriate Chair(s) listed below.

See you in Portland, Oregon!

2019 Cordilleran Meeting Committee:
Meeting Co-Chairs: Martin Streck,
Jim O’Connor,
Technical Program Co-Chairs Matt Brunengo,
Erick Burns,
Field Trip Co-Chairs Jason McClaughry,
Clark Niewendorp,
Bob Houston,
Workshop/Short Course Chair Frank Granshaw,
Sponsorship Chair Scott Burns,

Proposals Received as of 18 July

Theme Sessions

Crystal Windows into Igneous Processes
Variations on the crystal-scale are intimately linked to large-scale dynamics in igneous systems. We invite contributions that explore the implications of mineral zoning, mineral textures, melt inclusions, reentrants/embayments, etc. for magma generation and evolution in the US cordilleran.
Anne Fulton (UO); Michelle Muth (UO); Nicole Rocco (OSU)
Late Quaternary Deformation in the Inverted Santa Maria Basin, CA: Documenting and Quantifying Active Folding Using Syn-Tectonic Deposits
The Santa Maria area is an inverted basin in southern California with several kilometers of documented shortening, however with minimal constraints on recent activity. A quantitative description of late Quaternary deformation, in terms of amount, timing, and style of fold growth, will address earthquake potential and regional tectonic models.
Ian S. McGregor, California State University Long Beach
Hydrogeology of Coastal Basins of the western United States
Coastal basins in the western United States vary greatly in their geologic setting, water availability, and predominant land and water uses. This session welcomes contributions on the tectonic evolution, geologic framework, hydrogeologic conceptualization, and water-resource evaluation of coastal basins. Geologic, hydrologic, and geophysical disciplines are all encouraged to apply.
Donald Sweetkind, USGS; Geoffrey Cromwell, USGS
The Cascades: Variations in Space and Time of a Hot Dry Arc
The Cascade arc represents an end member "hot and dry" subduction system underlain by diverse continental crust. How have the tectonic, igneous and volcanic processes evolved? We welcome contributions on ancestral to modern magmatism and associated hydrothermal processes (ore deposits and geothermal systems), including geochemical and geophysical segmentation and evolution.
Adam Kent, Oregon State University,;Anita Grunder, Oregon State University,; John Dilles, Oregon State University,
Undergraduate Research (Posters)
This poster session will highlight geosciences research conducted by undergraduate students. All abstracts must be written by students, but may include non-student co-authors (faculty mentors or collaborators). The students must present the poster. Topics may include undergraduate research in any discipline of geology or related fields (e.g., water resources, environmental science, physical geography, oceanography, etc).
Jeff Marshall, Cal Poly Pomona,
Cordilleran Tectonics from the Basin and Range to Alaska and the Arctic: A Celebration of Elizabeth Miller's Career and recipient of the 2018 Structure & Tectonics Division Career Contribution Award
Elizabeth's 40-year career at Stanford University resulted in significant contributions to characterizing extensional tectonics in the Basin and Range Province and in Alaska and the Arctic, including paleogeography and paleocontinental reconstructions of the Arctic. This session honors Elizabeth's diverse career in structural geology and tectonics with contributions from the Basin and Range, Alaska, and the Arctic.
Jeff Lee, Dept. of Geological Sciences, Central Washington University;; Victoria Pease, Dept. of Geological Sciences, Stockholm University;
The evolution of the Columbia River: fluvial, volcanic, and tectonic interactions from Miocene to modern time
This section focuses on the mechanisms and processes that have shaped the Columbia River over short (decadal) and geologic timescales. We welcome submissions with new approaches and applications of geochronology, geochemistry, landscape evolution modeling, and chemical/physical mass balance.
Lydia Staisch, U.S. Geological Survey,; Jim O'Connor, U.S. Geological Survey,
Provenance of the Plio-Pleistocene Prairie Creek Formation Screen reader support enabled (Posters)
The Prairie Creek Formation (PCF) is the only continuous stratigraphic record from Cape Blanco to Humboldt Bay. New Detrital zircon U-Pb ages from the PCF indicate a very strong Klamath plutonic signature (130-170 Ma), with possible minor inputs from the Sierra Nevada, Idaho Batholith, and/or Franciscan Eastern Belt.
Benjamin Steven Roberts,
Magmatism in the Cascades: Variations in Space and Time
Although the Cascades are one of Earth’s most studied subduction zones, considerable uncertainty exists about how tectonic, igneous and other processes vary through space and time. We welcome contributions on ancestral to modern Cascade arc magmatism, including geochemical and geophysical segmentation and evolution, hydrothermal processes and ore deposit formation.
Adam Kent,; John Dilles,; Anita Grunder,
Hands-On Teaching Demonstrations in Introductory Geoscience Couses: Audience Participation Requested!
This is a geoscience education session that practices what it preaches. Authors present micro-demonstrations of effective teaching activities that illustrate geologic concepts in Introductory Geoscience Courses. Presentations include audience participation, assessment results, and reflections on effectiveness.
Daina Hardisty, Mt. Hood Community College,; Andrew Hillt, Portland Community College,; Eriks Puris, Portland Community College,
Magmatism of the Columbia River flood basalt province
This session focuses the evolution of the Columbia River flood basalt province as viewed from diverse perspectives, including but not limited to geochemistry, geochronology, stratigraphy, volcanology, and geophysics.
Seth Burgess, USGS,; Michael Sawlan, USGS,
Geologic Hazards: Hazard Maps, Risk Analysis, and Risk Reduction
Geologic hazards represent a major proportion of hazards in the Cordilleran and in America. Understanding the hazard is fundamental, however understanding the hazard and risk can help advance risk reduction actions. This session intends to facilitate sharing new techniques in hazards and risk analysis, which have stimulated risk reduction.
William Burns, Oregon Department of Geology,; Nancy Calhoun, Oregon Department of Geology,; Christina Appleby, Oregon Department of Geology,
Advances in Seismic Hazard Assessment Through Paleoseismic and Tectonic Geomorphic Fault Studies
Tectonic geomorphic and paleoseismic studies provide important insight into active fault behavior. Observations include timing and displacement of past earthquakes, slip rates and fault kinematics from offset landforms, and distribution of surface deformation. This session seeks contributions on active fault studies, hazard characterization of individual faults, and along-strike rupture correlations.
Ashley Streig, Portland State University,; Kate Scharer, USGS,; Scott Bennett, USGS,
Geoscience Education Research and Practice
his session will explore all aspects of geoscience education, with evidence of effectiveness, from research to practice. This includes: 1) research on teaching and learning, assessment, and educational research; 2) implementation of the NGSS in K-12 and educating future teachers; and 3) formal and informal teaching and outreach to all audiences (K-16 and beyond).
Robyn Mieko Dahl, Western Washington University,; Natalie Bursztyn, Quest University,; Katrien van der Hoeven Kraft, Whatcom Community College,
Interactions between water and volcanic terranes
Volcanism and derivative geologic features are prevalent and frequently dominant across much of the North American Cordillera. Volcanogenic deposits exert strong controls on processes such as regional hydrology and are associated with unique flow patterns and water chemistry. Abstracts are solicited on any aspect of volcanic hydrology or related sciences (e.g., ecology), with preference given to presentations that examine causative relations between volcanic features and system response.
Erick Burns, US Geological Survey,; Gordon Grant, USDA Forest Service,; Steven Ingebritsen, US Geological Survey,

Field Trips

Columbia River Basalt Hydrology and Management Solutions in the Mosier Basin, Oregon
Explore the structure, flood basalt depositional environments, and landscape development that formed a groundwater flow system in the eastern Columbia River Gorge, where past well construction practices and overuse have severely depleted parts of the system. Learn about hydrogeologic and management techniques being used to address aquifer depletion.
Lydia Staisch, U.S. Geological Survey,; Jim O'Connor, U.S. Geological Survey,
Mount St. Helens--Its 1980 eruption and 39 years of posteruption recovery
On this trip, we will visit the Toutle River valley, which bore the brunt of the Mount St. Helens 1980 eruption. We will discuss the volcanic processes and impacts of the eruption, and the hydrologic, geomorphic, and ecologic responses to those eruptive impacts.
Jon Major, US Geological Survey,

Short Courses

Assessing Contaminant Sources and Aquifer Continuity in Soil/Groundwater using Stable Isotopes of Strontium (Sr) and Lead (Pb)
Soil/groundwater contamination, tracing groundwater flow, and evaluating aquifer continuity are important issues in western soil/watershed management. Stable Sr/Pb isotopes are effective in identifying contaminant contributions from petroleum, mining, agricultural, and other sources. This course covers fundamental concepts of Sr/Pb isotopes followed by specific case studies that exemplify their application in the western U.S.
Richard W. Hurst/California Lutheran University,