@article{64802749852343c6bb908553be5eced7,
title = "Thompson field forum report: Age and carving of grand canyon: Toward a resolution of 150 years of debate",
abstract = "The age and evolution of the Grand Canyon, in the western USA, have been debated since J.W. Powell's exploration of the Colorado River in 1869. This paper reports results of a 2019 GSA Thompson Field Forum that honored the 150th anniversary of Powell's first trip.",
author = "Karlstrom, {Karl E.} and Crossey, {Laura J.} and Eugene Humphreys and David Shuster and Kelin Whipple and Ryan Crow",
note = "Funding Information: We thank the Thompson Field Forum program of the Geological Society of America for providing scholarships for students and international travel, and we thank Becky Sundeen for logistical support. We thank Grand Canyon Expeditions for running the river trip and providing scholarship funding for students. The Tectonics Program of the National Science Foundation also contributed student support through EAR-1915209. We thank Jeanne Calhoun of Grand Canyon National Park{\textquoteright}s Science and Resource Office for representing the Park in its 100th anniversary year and for continued support for research. We thank all of the participants for energetic scientific discussions and for contributing to this report. Publisher Copyright: {\textcopyright} 2020 Geological Society of America. All rights reserved.",
year = "2020",
doi = "10.1130/GSAT-TFF-GC.1",
language = "English (US)",
volume = "30",
pages = "1--16",
journal = "GSA Today",
issn = "1052-5173",
publisher = "Geological Society of America",
number = "2",
}