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Eastern Oregon
Eastern Oregon is the eastern part of the U.S. state of Oregon. It is not an officially recognized geographic entity; thus, the boundaries of the region vary according to context. It is sometimes understood to include only the eight easternmost counties in the state; in other contexts, it includes the entire area east of the Cascade Range. Cities in the basic eight-county definition include Baker City, Burns, Hermiston, Pendleton, Boardman, John Day, La Grande, and Ontario. Umatilla County is home to the largest population base in Eastern Oregon; accounting for 42% of the region's residents. Hermiston, located in Umatilla County, is the largest city in the region, accounting for 10% of Eastern Oregon's residents. Major industries include transportation/warehousing, timber, agriculture and tourism. The main transportation corridors are I-84, U.S. Route 395, U.S. Route 97, U.S. Route 26, U.S. Route 30, and U.S. Route 20. Compared to the climate of Western Oregon, the clima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Oregon
Western Oregon is a geographical term that is generally taken to mean the part of the U.S. state of Oregon within of the Oregon Coast, on the west side of the crest of the Cascade Range. The term is applied somewhat loosely, however, and is sometimes taken to exclude the southwestern areas of the state, which are often referred to as "Southern Oregon". In that case, "Western Oregon" means only the counties west of the Cascades and north of and including Lane County. Western Oregon, being in area, is about the same size as New England minus Maine. Unlike the climate of Eastern Oregon, which is primarily dry and continental, the climate of Western Oregon is generally a moderate Mediterranean climate. See also * Northwest Oregon Northwest Oregon is a geographic and cultural region of the U.S. state of Oregon, composed of Clatsop, Columbia, and Tillamook counties. The region encompasses the northernmost parts of the state along the lower Columbia River. History The regi ... R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Owyhee Desert
The Owyhee Desert ecoregion, within the deserts and xeric shrublands biome, is in the Northwestern United States. The Owyhee Uplands Byway passes through the desert. Geography An arid region of canyons, volcanic rock, sagebrush and grass makes up the ~ Owyhee Desert. The desert is in northern Nevada, southwestern Idaho and southeastern Oregon. It is located on the south edge of the Columbia Plateau southwest of Boise, Idaho, stretching east from the Santa Rosa Range. It has a mean elevation of approximately . The Owyhee Desert is primarily drained by the tributaries of the Bruneau River and Owyhee Rivers, which then flow into the Snake River. Management Most of the land in the desert is owned by the federal government and managed by the Bureau of Land Management. It is largely used as ranch land. In 1999, the Desert Group submitted an alternative for Owyhee resource management. See also * Bruneau – Jarbidge Rivers Wilderness * Owyhee River Wilderness * Y P Desert The Y P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alvord Desert
The Alvord Desert is a desert located in Harney County, in southeastern Oregon in the Western United States. It is roughly southeast of Steens Mountain. The Alvord Desert is a dry lake bed and averages of rain a year. Two mountain ranges separate it from the Pacific Ocean—the Coast Range, and the Cascade Mountains. Along with Steens Mountain, these topographical features create a rain shadow. The Alvord Desert lies at an elevation of approximately . During the dry season the surface is sufficiently flat for driving or landing small aircraft. Vehicle driving attempts to score land speed records are performed on the dry lake bed. The women's world land speed record was set in 1976 by Kitty O'Neil at , later surpassed in 2019 by Jessi Combs at , although the latter died in the process because of a crash. The nearest community is Fields, Oregon. Name The desert is named after General Benjamin Alvord, who served as commander of the U.S. Army's Department of Oregon during ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Columbia River Basalt Group
The Columbia River Basalt Group is the youngest, smallest and one of the best-preserved continental flood basalt province on Earth, covering over mainly eastern Oregon and Washington, western Idaho, and part of northern Nevada. The basalt group includes the Steens and Picture Gorge basalt formations. Introduction During the middle to late Miocene epoch, the Columbia River flood basalts engulfed about of the Pacific Northwest, forming a large igneous province with an estimated volume of . Eruptions were most vigorous 17–14 million years ago, when over 99 percent of the basalt was released. Less extensive eruptions continued 14–6 million years ago. Erosion resulting from the Missoula Floods has extensively exposed these lava flows, laying bare many layers of the basalt flows at Wallula Gap, the lower Palouse River, the Columbia River Gorge and throughout the Channeled Scablands. The Columbia River Basalt Group is thought to be a potential link to the Chil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flood Basalt
A flood basalt (or plateau basalt) is the result of a giant volcanic eruption or series of eruptions that covers large stretches of land or the ocean floor with basalt lava. Many flood basalts have been attributed to the onset of a hotspot reaching the surface of the earth via a mantle plume. Flood basalt provinces such as the Deccan Traps of India are often called '' traps'', after the Swedish word ''trappa'' (meaning "staircase"), due to the characteristic stairstep geomorphology of many associated landscapes. Michael R. Rampino and Richard Stothers (1988) cited eleven distinct flood basalt episodes occurring in the past 250 million years, creating large igneous provinces, lava plateaus, and mountain ranges. However, more have been recognized such as the large Ontong Java Plateau, and the Chilcotin Group, though the latter may be linked to the Columbia River Basalt Group. Large igneous provinces have been connected to five mass extinction events, and may be associated with b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steens Mountain
Steens Mountain is in the southeastern part of the U.S. state of Oregon, and is a large fault-block mountain. Located in Harney County, it stretches some north to south, and rises from the west side the Alvord Desert at elevation of about to a summit elevation of . Steens Mountain is not part of a mountain range but is properly a single mountain, the largest of Oregon's fault-block mountains.Conkling, C., Jackman, E. R., & Scharff, J. (1967)Steens Mountain in Oregon's high desert country Caxton Press. Retrieved April 25, 2022 The Steens Mountain Wilderness encompasses of Steens Mountain. of the Wilderness are protected from grazing and free of cattle. History The mountain was called the "Snowy Mountains" by John Work, one of the fur traders who were the first Europeans in the area. It was renamed in 1860 for United States Army Major Enoch Steen, who fought and drove members of the Paiute tribe off the mountain. American Indians used the Steens Mountain, particularly Big I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ochoco Mountains
The Ochoco Mountains are a mountain range in central Oregon in the United States, located at the western end of the Blue Mountains. They were formed when Permian, Triassic, and Jurassic rocks were slowly uplifted by volcanic eruptions to form the Clarno Formation. Today, the highest point in the range is Lookout Mountain. The dominant vegetation on the west side of the range is old-growth ponderosa pine; on the east side, western juniper is common. The western area of the mountains is administered by the Ochoco National Forest, while the southeastern section is part of the Malheur National Forest. The Ochoco Mountains are used for hiking, camping, bird watching, rockhounding, and hunting, as well as cross-country skiing in the winter. Geography The Ochoco Mountains run north to south and east to west. The eight highest peaks in the range are: * Lookout Mountain, * Spanish Peak, * Mount Pisgah, * Round Mountain, * East Point, * North Point, * Wolf Mountain, * View ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trout Creek Mountains
The Trout Creek Mountains are a remote, semi-arid Great Basin mountain range mostly in southeastern Oregon and partially in northern Nevada in the United States. The range's highest point is Orevada View Benchmark, above sea level, in Nevada. Disaster Peak, elevation , is another prominent summit in the Nevada portion of the mountains. The mountains are characteristic of the Great Basin's topography of mostly parallel mountain ranges alternating with flat valleys. Oriented generally north to south, the Trout Creek Mountains consist primarily of fault blocks of basalt, which came from an ancient volcano and other vents, on top of older metamorphic rocks. The southern end of the range, however, features many granitic outcrops. As a whole, the faulted terrain is dominated by rolling hills and ridges cut by escarpments and canyons. Most of the range is public land administered by the federal Bureau of Land Management. There is very little human development in the remote regionâ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wallowa Mountains
The Wallowa Mountains () are a mountain range located in the Columbia Plateau of northeastern Oregon in the United States. The range runs approximately northwest to southeast in southwestern Wallowa County and eastern Union County between the Blue Mountains to the west and the Snake River to the east. The range is sometimes considered to be an eastern spur of the Blue Mountains, and it is known as the "Alps of Oregon". Much of the range is designated as the Eagle Cap Wilderness, part of the Wallowa–Whitman National Forest. Geography The range is drained by the Wallowa River, which flows from the north side of the mountains, and its tributary the Minam River, which flows through the west side of the range. The Imnaha River flows from the east side of the range. The highest point in the range is Sacajawea Peak, which is above sea level. Sacajawea is the sixth highest mountain in Oregon and the state's highest peak outside of the Cascade Range. Geology Many geologists be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strawberry Mountains
The Strawberry Range, also known as the Strawberry Mountains, is a mountain range in the U.S. state of Oregon. It is east of John Day, within Malheur National Forest. The highest peak is Strawberry Mountain. The Strawberry Range is part of the larger Blue Mountains range, and contains the Strawberry Mountain Wilderness. Pioneers named Strawberry Mountain after observing prolific wild strawberries growing in a nearby valley. The area has extremely diverse ecological composition, which includes five of seven major life zones in North America. Indigenous populations of Rocky Mountain Elk exist as well as mule deer, antelope, black bear, cougar, California bighorn sheep, ruffed and blue grouse, pileated woodpecker, sharp-shinned hawk, bald eagle, pine marten, mink, beaver. There are 378 animal and 22 fish species present. Mountain goats are seen at the higher elevations of the Palisades ridge as of Aug 7, 2016. A hunting tag for mountain goats on the Strawberry Mountain was is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blue Mountains (Pacific Northwest)
The Blue Mountains are a mountain range in the northwestern United States, located largely in northeastern Oregon and stretching into extreme southeastern Washington. The range has an area of about , stretching east and southeast of Pendleton, Oregon, to the Snake River along the Oregon–Idaho border. The Blue Mountains cover ten counties across two states; they are Union, Umatilla, Grant, Baker, Wallowa and Harney counties in Oregon, and Walla Walla, Columbia, Garfield and Asotin counties in Washington. The mountains are unique as the home of the world's largest living organism, a subterranean colonial mycelial mat of the fungus ''Armillaria ostoyae''. The Blue Mountains were named after the color of the mountains when seen from a distance. Geology The Blues are uplift mountainscbgwma.orThe Columbia River Basalt Group , Continental flood basalt flows , cbgwma.org accessdate: February 8, 2017 and contain some of the oldest rocks in Oregon. Rocks as old as 400 million yea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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