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Federal
Extent of Pliocene hyaloclastic deposits and related lava flows in the Columbia Gorge, Oregon and Washington
Department of the Interior —
This dataset contains polygons representing deposits of hyaloclastic debris that were generated between about 3.5 and 3.0 million years ago when a series of basaltic... -
Federal
X-ray Fluorescence Geochemistry of Columbia River Basalt Group Rocks in the Western Columbia River Gorge
Department of the Interior —
This table contains geochemical data collected for whole-rock samples from the Columbia River Basalt Group in the western Columbia River Gorge in Oregon and...