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GSA 2017 ANNUAL MEETING & EXPOSITION

Advocates: Tammy Rittenour; Michelle Summa Nelson; a forum to identify remaining problems and opportunities in
Shannon A. Mahan Cordilleran tectonics.

Age control is an essential aspect of most geologic research. P6. Earth Anatomy Revealed: Geologic Mapping for
However, the first step toward obtaining accurate age estimates Our Future
relies on the individual researcher to correctly select and collect
suitable material for dating. For best results, researchers need to Cosponsors: GSA Geology and Society Division; GSA Geology
assess site and sample conditions through the lens of the dating and Public Policy Committee; GSA Geoinformatics Division;
specialist. This unique booth-style Pardee session will facilitate Association of American State Geologists; American Geosciences
discussion and one-on-one interactions between geochronology Institute; American Institute of Professional Geologists; American
specialists and users of the techniques, such as students, researchers, Geophysical Union; U.S. Geological Survey
and other professionals in the field.
Disciplines: Geoscience and Public Policy, Geoscience
P5. Origin, Accretion, and Translation of Mesozoic-Cenozoic Information/Communication, Geoinformatics
Terranes along the Pacific Margin of North America
Advocates: Darcy K. McPhee; Cassaundra A. Rose; L. Harvey
Cosponsor: GSA Structural Geology and Tectonics Division Thorleifson; Danielle N. Woodring

Discipline: Tectonics/Tectonophysics Our need for information on earth materials, processes, and
history is escalating. Solving issues from public health to emer-
Advocates: David T. Katopody; Mark T. Brandon; Bernard Housen gency preparedness, resource management, and global hydrological
and tectonic modeling requires not only geologic maps at a full
The Mesozoic to Cenozoic evolution of the western margin range of resolutions and formats, but also 3D grids of physical
of the North American Cordillera has been the center of a long- properties from lithology to hydraulic conductivity. This session
standing controversy about the mobility of crustal fragments will highlight efforts to address these ongoing and urgent challenges,
along continental margins. This symposium will outline the including innovative applications of geologic maps to social
major lines of evidence for accretion and coastwise transport needs, new and evolving technologies, and lessons from cutting-
during the late Mesozoic and into the Cenozoic and will serve as edge science such as extraterrestrial mapping.

Tlingit Indian totem in historic Pioneer Square. Photo by Alabastro Photography, used with permission from Visit Seattle. 17

community.geosociety.org/gsa2017