Nov 19, 2024 · The Picture Gorge Basalts (PGBs) are found all throughout the Sheep Rock Unit of the monument, seen close to the tops of the John Day Valley's peaks. These basalts were …

The Columbia River Basalt Group (including the Steen and Picture Gorge basalts) extends over portions of four states. The Columbia River Basalt Group (CRBG) is the youngest, smallest …

Jan 31, 2020 · We explore the Picture Gorge Basalt (PGB) formation of the CRBG, and discuss the location and geochemical significance in a temporal context of early CRBG magmatism.

Feb 9, 2023 · The Picture Gorge Basalt (PGB) of the Columbia River Basalt Group (CRBG) has been previously thought to be limited in its eruptive volume (<3000 km 3) and thought to not …

The Picture Gorge Basalt (PGB) is part of the Miocene Columbia River Basalt Group (CRBG). The PGB, which outcrops in eastern Oregon, is considered coincident in time with the …

Mar 23, 2025 · The Picture Gorge Basalt (PGB) is a small part of a large volcanic province in western North America that erupted 17–16 million years ago. The record of Earth's magnetic …

The earliest-erupted basalts from this province aid in understanding and modeling plume impingement and the subsequent evolution of basaltic volcanism. We explore the Picture …

PICTURE GORGE BASALT (Member of the CRB) Waters (1961) recognized two units of the Columbia River Basalts (CRB): Yakima, covering much of eastern Washington and Picture …

Feb 9, 2023 · This study focuses on extensive outcrops of basaltic lavas and dikes south of the type locality at Picture Gorge, in order to reassess the spatial distribution and eruptive volume …

Jan 31, 2020 · We explore the Picture Gorge Basalt (PGB) formation of the CRBG, and discuss the location and geochemical significance in a temporal context of early CRBG magmatism.