Significance of Upper-Mantle Geochemical Signals of the Picture Gorge Basalt (PGM) Member in Light of an Extended Distribution and New Age Data Placing PGB at Onset of Columbia River Basalt Group Eruptions

Cahoon, Emily

Significance of Upper-Mantle Geochemical Signals of the Picture Gorge Basalt (PGM) Member in Light of an Extended Distribution and New Age Data Placing PGB at Onset of Columbia River Basalt Group Eruptions

Emily Bogdan Cahoon, Portland State University, Portland, OR, United States, Martin J Streck, Portland State Univ, Portland, OR, United States, Anthony Koppers, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, Richard Carlson, Carnegie Inst Washington, Department of Terrestrial Magnetism, Washington, DC, United States and Daniel P Miggins, Oregon State University, Corvallis, OR, United States