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GSA 2019 ANNUAL MEETING & EXPOSITION

18. Dust on a Dangerous Highway: Exploring Linkages 26. Exploring Superimposed Laramide Contraction, Porphyry
between Landscape and Dust Emissions along Interstate-10 Copper Systems, and Cenozoic Extension in the Globe-
near Casa Grande, Arizona. Sat., 21 Sept. Cosponsor: GSA Superior-Ray–San Manuel Area, East-Central Arizona.
Quaternary Geology and Geomorphology Division. Leader: Thurs.–Sat., 26–28 Sept. Cosponsor: GSA Mineralogy,
Mark R. Sweeney, University of South Dakota; Eric V. McDonald, Geochemistry, Petrology, and Volcanology Division; GSA
Desert Research Institute. Structural Geology and Tectonics Division. Leaders: Mark D.
Barton, University of Arizona; Eric Seedorff, University of
19. Accessible Field Geology of Petrified Forest National Park. Arizona; Daniel Favorito; Roy Greig; Carson A. Richardson.
Wed.–Thurs., 25–26 Sept. Cosponsors: The International
Association for Geoscience Diversity; GSA Geoscience Education 27. The “Holey” Tour: Ron Greeley’s Introductory Planetary
Division; GSA Diversity in the Geosciences Committee. Leaders: Geology Field Trip. Thurs.–Sat., 26–28 Sept. Cosponsors: GSA
Christopher L. Atchison, University of Cincinnati; William G. Planetary Geology Division; Arizona State University School of
Parker; Nancy Riggs; Steven Semken; Steven Whitmeyer. Earth and Space Exploration. Leaders: David A. Williams, Arizona
State University; Steven D. Kadel; R. Scott Harris.
20. Catalina-Rincon Metamorphic Core Complex, Tucson,
Arizona. Wed.–Fri., 25–27 Sept. Leaders: George H. Davis, 28. Mesozoic to Cenozoic Sedimentation, Tectonics, and
University of Arizona; George E. Gehrels; Jon Spencer. Metallogeny of Sonora, Mexico. Thurs.–Mon., 26–30 Sept.
Cosponsors: Roberto Molina Garza, National Autonomous
21. A River is Born: Highlights of the Geologic Evolution of University of Mexico (UNAM); Southern Copper Corp.; Fresnillo
the Colorado River Extensional Corridor and its River: A plc. Leaders: Jason B. Price, California Institute of Technology;
Field Trip Honoring the Life and Legacy of Warren Hamilton. Thierry Calmus.
Wed.–Sat., 25–28 Sept. Cosponsors: GSA Quaternary Geology
and Geomorphology Division; GSA Structural Geology and 29. Volcanic and Marine Stratigraphy along the El Alamo
Tectonics Division. Leaders: Keith A. Howard, U.S. Geological Canyon, Santa Rosalia Basin, Baja California. Thurs.–Wed.,
Survey; P. Kyle House; Philip A. Pearthree; Barbara E. John; 26 Sept.–2 Oct. Cosponsor: Geophysics Institute, UNAM, Campi
Ryan S. Crow. Morelia. Leader: José Luis Macías, National Autonomous
University of Mexico (UNAM).
22. Sonoran Desert Landforms via Mountain Biking.
Thurs., 26 Sept. Leaders: Ronald Dorn, Arizona State University; 30. Walk in the Footsteps of the Apollo Astronauts. Fri.–Sat.,
Ian Walker, Arizona State University; Steve Skotnick, 27–28 Sept. Cosponsors: U.S. Geological Survey; Flagstaff
Hydrosystems Inc. Festival of Science; Flagstaff Lunar Legacy; Lowell Observatory.
Leaders: R. Greg Vaughan, Astrogeology Science Center; Kevin
23. The 2010 Schultz Fire—Immediate, Ongoing, and Long- Schindler; Jeanne Stevens; Ian Hough.
Term Geomorphic, Ecological, and Societal Impacts of a
Small, High-Severity Wildfire. Thurs.–Fri., 26–27 Sept. 31. An Introduction to the Pinal Terrain of Southern
Cosponsors: Grant Meyer; GSA Quaternary Geology and Arizona: A Paleoproterozoic Subduction Complex? Fri.–Sat.,
Geomorphology Division; Stephen Slaughter; GSA Environmental 27–28 Sept. Cosponsor: Arend Meijer. Leader: Arend Meijer.
and Engineering Geology Division. Leaders: Ann M. Youberg,
University of Arizona; Luke McGuire. 32. A Comparison of Two Caves in Southern Arizona:
Colossal Cave and Kartchner Caverns. Thurs., 26 Sept. US$90.
24. Geology and Paleontology of the Mid-Pleistocene El Golfo Cosponsors: Kartchner Caverns State Park; Colossal Cave
Badlands, Sonora, Mexico. Thurs.–Fri., 26–27 Sept. Leaders: Mountain Park. Leaders: Sarah Truebe, University of Arizona;
Fred W. Croxen, Arizona Western College; Christopher A. Shaw. Lauren Hohl.

25. The Rise and Fall of a Laramide Deposystem: Structural
Inversion and Regional Drainage Reversal across the Plateau
Transition Zone in Eastern Arizona. Thurs.–Fri., 26–27 Sept.
Leader: Andre R. Potochnik, Grand Canyon Conservancy.

60 GSA Today | May 2019