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
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
2023年10月18日 · 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 - 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.
What is Columbia Plateau? - Earth.com
It’s named for the Columbia River Plateau, a flood basalt plateau created by the Columbia River Basalt Group during the late Miocene and early Pliocene. The arid sagebrush steppe and grasslands of the region are bordered by moister, predominantly forested, mountainous ecoregions on all sides.
Columbia Plateau - PeakVisor
Home to vast sprawling sagebrush, massive buttes, and rugged peaks, the Columbia Plateau is a collection of mountain ranges in the US states of Oregon, Washington, and Idaho. It contains 1,575 named mountains, the highest and most prominent of which is Sacajawea Peak (9,820ft/2,993m).
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.
Region 4: The Columbia Plateau - Paleontological Research …
The Columbia Plateau lies to the west of the Rocky Mountains in eastern Washington, Oregon, and Idaho. This region, also called the Columbia Basin, is a broad, volcanic plain composed of basalt.
Columbia Plateau - FactMonster
Columbia Plateau, physiographic region of North America, c.100,000 sq mi (259,000 sq km), NW United States, between the Rocky Mts. and the Cascade Range in Washington, Oregon, and Idaho.