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Black Crater
Black Crater is a shield volcano in the Western Cascades in Deschutes County, Oregon. Located near McKenzie Pass, the volcano has a broad conical shape with gentle slopes. The volcano likely formed during the Pleistocene and has not been active within the last 50,000 years. Eruptive activity at the volcano produced mafic lava flows made of basaltic andesite and olivine basalt; it also formed a number of cinder cones. A normal fault occurs on the western side of the volcano, trending north–south. The volcano has been eroded by glaciers, which carved a large cirque into the northeastern flank of the mountain, forming its current crater. The area was settled 1862, when pioneers moved to the forested region south of Black Crater, near what is now the city of Sisters. The volcano is part of the Three Sisters Wilderness, which offers recreational activities. The Black Crater Trail runs one way for from a trailhead on Oregon Route 242, and the southeastern part of the trail can be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dee Wright Observatory
Dee Wright Observatory is an observation structure at the summit of McKenzie Pass in the Cascade Mountains of Oregon. The structure is an open shelter constructed with lava stone. It is located in the midst of a large lava flow, and offers an exceptional view of numerous Cascade peaks. Location Dee Wright Observatory is located in the Willamette National Forest 15 miles (24 km) west of Sisters, Oregon on Oregon Route 242, Route 242.Wright Observatory" Willamette National Forest, United States Forest Service, Eugene, Oregon 26 June 2002. The highway is part of the McKenzie-Santiam Pass Scenic Byway. McKenzie Pass is above sea level, and winter snow and the narrow road surface requires McKenzie Pass to be closed to motor vehicles from November to July each year. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fault (geology)
In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic forces, with the largest forming the boundaries between the plates, such as the megathrust faults of subduction zones or transform faults. Energy release associated with rapid movement on active faults is the cause of most earthquakes. Faults may also displace slowly, by aseismic creep. A ''fault plane'' is the plane that represents the fracture surface of a fault. A ''fault trace'' or ''fault line'' is a place where the fault can be seen or mapped on the surface. A fault trace is also the line commonly plotted on geologic maps to represent a fault. A ''fault zone'' is a cluster of parallel faults. However, the term is also used for the zone of crushed rock along a single fault. Prolonged motion along closely spaced faults can blur the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willamette National Forest
The Willamette National Forest is a National Forest located in the central portion of the Cascade Range of the U.S. state of Oregon. It comprises . Over 380,000 acres (694 mi2, 1,540 km2) are designated wilderness which include seven major mountain peaks. There are also several National Wild and Scenic Rivers within the forest. The forest is named for the Willamette River, which has its headwaters in the forest. The forest headquarters are located in the city of Springfield. There are local ranger district offices in McKenzie Bridge, Detroit, Sweet Home, and Westfir. The forest is famous for being at the center of the controversy between the logging industry and the endangered species status of the northern spotted owl. Environmentalists maintain that the forest was aggressively clear-cut for many years threatening a federally listed endangered species. The timber industry contends that the forest can simultaneously provide lumber jobs and wildlife habitat. Sinc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belknap Crater
Belknap Crater is a shield volcano in the Cascade Range in the U.S. state of Oregon. Located in Linn County, it is associated with lava fields and numerous subfeatures including the Little Belknap and South Belknap volcanic cones. It lies north of McKenzie Pass and forms part of the Mount Washington Wilderness. Belknap is not forested and most of its lava flows are not vegetated, though there is some wildlife in the area around the volcano, as well as a number of tree molds formed by its eruptive activity. Belknap was named for J. H. Belknap, whose father R. S. Belknap developed Belknap Springs. Early routes through the area extended near Belknap and its lava fields, and in the early 20th century, herds of sheep were moved to the two steptoes that lie among the Little Belknap lava flows to graze. The Oregon Skyline Trail, which runs to the west of Belknap's lava flows, follows paths used by Native American populations, who harvested huckleberries in the area. Today, there are a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abies Amabilis
''Abies amabilis'', commonly known as the Pacific silver fir, is a fir native to the Pacific Northwest of North America, occurring in the Pacific Coast Ranges and the Cascade Range. It is also commonly referred to as the white fir, red fir, lovely fir, Amabilis fir, Cascades fir, or silver fir. The species name is Latin for 'lovely'. Description The tree is a large evergreen conifer growing to , exceptionally tall, and with a trunk diameter of up to , exceptionally . The bark on younger trees is light grey, thin and covered with resin blisters. On older trees, it darkens and develops scales and furrows. The leaves are needle-like, flattened, long and wide by thick, matte dark green above, and with two white bands of stomata below, and slightly notched at the tip. The leaf arrangement is spiral on the shoot, but with each leaf variably twisted at the base so they lie flat to either side of and above the shoot, with none below the shoot. The shoots are orange-red with dense v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Purshia
''Purshia'' (bitterbrush or cliff-rose) is a small genus of 5–8 species of flowering plants in the family Rosaceae which are native to western North America. Description ''Purshia'' species form deciduous or evergreen shrubs, typically reaching tall. The leaves are long, deeply three- to five-lobed, with revolute margins. The flowers are 1–2 cm in diameter, with five white to pale yellow or pink petals and yellow stamens. The fruit is a cluster of dry, slender, leathery achenes which are 2–6 cm long. The roots have root nodule, nodules that host nitrogen-fixing ''Frankia'' bacterium. Taxonomy Taxonomic history The genus was originally placed in the subfamily Rosoideae. In the past, the evergreen species were treated separately in the genus ''Cowania''; this genus is still accepted by some botanists. Modern classification The classification of ''Purshia'' within the family Rosaceae has been unclear. It is now placed in the subfamily Dryadoideae. Species ''Pur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinus Ponderosa
''Pinus ponderosa'', commonly known as the ponderosa pine, bull pine, blackjack pine, western yellow-pine, or filipinus pine is a very large pine tree species of variable habitat native to mountainous regions of western North America. It is the most widely distributed pine species in North America.Safford, H.D. 2013. Natural Range of Variation (NRV) for yellow pine and mixed conifer forests in the bioregional assessment area, including the Sierra Nevada, southern Cascades, and Modoc and Inyo National Forests. Unpublished report. USDA Forest Service, Pacific Southwest Region, Vallejo, CA/ref> ''Pinus ponderosa'' grows in various erect forms from British Columbia southward and eastward through 16 western U.S. states and has been successfully introduced in temperate regions of Europe, and in New Zealand. It was first documented in modern science in 1826 in eastern Washington near present-day Spokane (of which it is the official city tree). On that occasion, David Douglas misidenti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tsuga Mertensiana
''Tsuga mertensiana'', known as mountain hemlock, is a species of hemlock native to the west coast of North America, found between Southcentral Alaska and south-central California. Description ''Tsuga mertensiana'' is a large evergreen conifer growing up to tall, with exceptional specimens as tall as tall. They have a trunk diameter of up to . The bark is about thick and square-cracked or furrowed, and purplish-brown to gray in color. The crown is a neat, slender, conic shape in young trees with a tilted or drooping lead shoot, becoming cylindric in older trees. At all ages, it is distinguished by the slightly pendulous branchlet tips. The shoots are orange–brown, with dense pubescence about long. The leaves are needle-like, long and broad, soft, blunt-tipped, only slightly flattened in cross-section, pale glaucous blue-green above, and with two broad bands of bluish-white stomata below with only a narrow green midrib between the bands; they differ from those of any othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctic–alpine
An Arctic–alpine taxon is one whose natural distribution includes the Arctic and more southerly mountain ranges, particularly the Alps. The presence of identical or similar taxa in both the tundra of the far north, and high mountain ranges much further south is testament to the similar environmental conditions found in the two locations. Arctic–alpine plants, for instance, must be adapted to the low temperatures, extremes of temperature, strong winds and short growing season; they are therefore typically low-growing and often form mats or cushions to reduce water loss through evapotranspiration. It is often assumed that an organism which currently has an Arctic–alpine distribution was, during colder periods of the Earth's history (such as during the Pleistocene glaciations), widespread across the area between the Arctic and the Alps. This is known from pollen records to be true for ''Dryas octopetala'', for instance. In other cases, the disjunct distribution may be the result ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oregon Route 242
Oregon Route 242, known as a portion of the McKenzie Highway, is an Oregon state highway that runs from Belknap Springs, Oregon through McKenzie Pass in the Oregon Cascades, to Sisters, Oregon, in the United States. The McKenzie Highway was added to the National Register of Historic Places in February, 2011. This highway was the original routing of U.S. Route 28 through the Oregon Cascades until 1952, when it was redesignated as part of U.S. Route 126 (now Oregon Route 126). This highway was built in the 1920s and was the only highway over the Cascades going east out of Eugene until 1962, when a gravel road heading north from Belknap Springs to U.S. Route 20 at Santiam Junction was widened and paved. At that point, the new alignment was designated as US 126, and the old alignment was renamed OR 242. OR 242 is now considered primarily a scenic route. As a result, it is not plowed or sanded, and is thus closed during winter—generally from November 1 until about the July 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Three Sisters Wilderness
The Three Sisters Wilderness is a wilderness area in the Cascade Range, within the Willamette and Deschutes National Forests in Oregon, United States. It comprises , making it the second largest wilderness area in Oregon, after the Eagle Cap Wilderness. It was established by the United States Congress in 1964 and is named for the Three Sisters volcanoes. The wilderness boundary encloses the Three Sisters as well as Broken Top, which is southeast of South Sister.Three Sisters Wilderness - Wilderness.net Three Sisters was designated as a Biosphere Reserve under the |
Sisters, Oregon
Sisters is a city in Deschutes County, Oregon, United States. It is part of the Bend, Oregon Metropolitan Statistical Area. The population was 2,038 at the 2010 census. History The community takes its name from the nearby Three Sisters mountains. Geography According to the United States Census Bureau, the city has a total area of , all of it land. The Santiam Highway (U.S. Route 20) and the McKenzie Highway (Oregon Route 126) merge briefly to form Cascade Avenue, the main thoroughfare through downtown Sisters. On Cascade Avenue, there is a lot of pedestrian traffic and many specialty stores and galleries. East of Sisters the two highways split, with 126 heading to Redmond and 20 going to Bend.Deschutes County 2011 Edition (PDF) West of Sisters, the road splits once more, with the McKenzie Hig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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