Columbia Plateau - Wikipedia
The Columbia Plateau is an important geologic and geographic region that lies across parts of the U.S. states of Washington, Oregon, and Idaho. [1] It is a wide flood basalt plateau between the Cascade Range and the Rocky Mountains , cut through by the Columbia River .
Columbia Plateau | Map, Geography, & Facts | Britannica
Columbia Plateau, geographic region, northwestern United States. It forms part of the intermontane plateaus and is bordered east by the Northern Rocky Mountains and west by the Sierra Nevada–Cascade region.
Columbia Plateau Province - U.S. National Park Service
Apr 30, 2018 · Over 170,000 cubic kilometers (105,633 mi) of basaltic lava, known as the Columbia River Basalts, covers the western part of the province. These tremendous flows erupted between 17 million - 6 million years ago.
Columbia Plateau State Park Trail | Washington State Parks
Oct 18, 2023 · Columbia Plateau State Park Trail is a day use park located in Eastern Washington. You can enjoy varied activities throughout the year including hiking, bicycling, horseback riding, birdwatching, cross-country skiing and snowshoeing.
Columbia Plateau (ecoregion) - Wikipedia
The Columbia Plateau ecoregion is a Level III ecoregion designated by the United States Environmental Protection Agency (EPA) encompassing approximately 32,100 square miles (83,139 km 2) [1] of land within the U.S. states of Washington, Oregon, and Idaho.
Columbia Plateau Trail - Wikipedia
The Columbia Plateau State Park Trail is a 130-mile-long (210 km), 20-foot-wide (6.1 m) corridor in eastern Washington state maintained as part of the Washington State Park system. The rail trail runs along the abandoned right-of-way of the former Spokane, Portland and Seattle Railway.
Columbia Plateau - nwcouncil.org
The Columbia Plateau, also known as the Columbia Basalt Plain, is the prominent geographic feature of the interior Columbia River Basin. The plateau formed between 6 million and 16 million years ago as the result of successive flows of basalt.
Columbia Plateau - Oregon Conservation Strategy
This COA is mainly located within the Blue Mountains ecoregion of Umatilla, Union, and Wallowa Counties, but enters into a small section of the Columbia Plateau ecoregion along its northwest corner. Characterized by extensive mixed conifer forest, this rugged landscape also contains important native perennial grasslands, abundant springs, and ...
Columbia Plateau Formation in Washington State | Britannica
This is the Columbia Plateau in the state of Washington—an enormous slab of volcanic rock that extends south to Oregon and east to Idaho, covering an area of about 260,000 square kilometers. Some of the plateau rocks have this peculiar columnar jointing, because lava shrinks as it cools.
Rocks of the Columbia Plateau and Basin and Range
Sep 21, 2022 · The Columbia Plateau, also known as the Columbia Basin, is the site of one of the largest outpourings of lava that the world has ever seen. The Columbia Plateau flood basalts are a notable example of a “Large Igneous Province,” where vast volumes of basalt are erupted over a relatively short period of time.