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Kuna Crest South
Kuna Crest is a mountain range near Tuolumne Meadows, in Yosemite National Park, California. Name The word ''Kuna'' probably derives from a Shoshonean word meaning "fire," which appears in the Mono dialect of the area, with a meaning of ''firewood''. On the summit of near-by Kuna Peak, there are many jagged pieces of rock which resemble fire themselves; see Kuna Crest Granodiorite. Geography and geology The Crest lies between two U-shaped glacial valleys: Lyell Canyon and the canyon of the Parker Pass Creek. Mammoth Peak lies at the northern end of the Kuna Crest. A number of lakes lie in cirques cut into the eastern edge of the Crest, including Kuna Lake, Bingaman Lake, Spillway Lake, and Helen Lake. The Crest consists of Kuna Crest Granodiorite, which is the oldest granitic rock of the Tuolumne Intrusive Suite. It is rich in biotite and hornblende. Rock climbing Climbing on Kuna Crest consists of mostly of walking and scrambling; there isn't much rock climbing, on Kuna C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yosemite National Park
Yosemite National Park ( ) is a List of national parks of the United States, national park of the United States in California. It is bordered on the southeast by Sierra National Forest and on the northwest by Stanislaus National Forest. The park is managed by the National Park Service and covers in four County, countiescentered in Tuolumne County, California, Tuolumne and Mariposa County, California, Mariposa, extending north and east to Mono County, California, Mono and south to Madera County, California, Madera. Designated a World Heritage Site in 1984, Yosemite is internationally recognized for its granite cliffs, waterfalls, clear streams, groves of Sequoiadendron giganteum, giant sequoia, lakes, mountains, meadows, glaciers, and Biodiversity, biological diversity. Almost 95 percent of the park is designated National Wilderness Preservation System, wilderness. Yosemite is one of the largest and least fragmented habitat blocks in the Sierra Nevada. Its geology of the Yosem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lyell Canyon
Lyell Canyon is a sub-alpine meadow in Yosemite National Park south of Tuolumne Meadows. For 8 miles(13 kilometers) most of the canyon has an approximate elevation of , and then rapidly climbs to to Donohue Pass, below Donohue Peak – which marks the eastern boundary of Yosemite. The valley at the base is relatively flat and wide, following the Lyell Fork of the Tuolumne River through an open meadow and wooded areas. The Lyell Fork eventually meets with Tuolumne River. The canyon as well as Mount Lyell to the west is named after Charles Lyell, a well-known 19th century geologist and friend of Charles Darwin. The canyon is an easy hike from Tuolumne Meadows campground. The John Muir Trail and the Pacific Crest Trail The Pacific Crest Trail (PCT), officially designated as the Pacific Crest National Scenic Trail, is a long-distance hiking and equestrian trail closely aligned with the highest portion of the Cascade and Sierra Nevada mountain ranges, which lie ... both rou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous Magmatism
The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 77.1 million years, it is the ninth and longest geological period of the entire Phanerozoic. The name is derived from the Latin , 'chalk', which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation . The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now-extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was largely ice-free, although there is some evidence of brief periods of glaciation during the cooler first half, and forests extended to the poles. Many of the dominant taxonomic groups present in modern times can be ultimately traced back to origins in the C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammoth Peak (Tuolumne)
Mammoth Peak is a mountain in the area of Tuolumne Meadows, Yosemite National Park, California. The summit (mountain), summit is a class 1-2 cross-country hike that features river crossings and Scrambling, boulder scrambling. The peak lies at the northern end of the Kuna Crest (Yosemite), Kuna Crest and is close to California State Route 120. From the road, its summit appears rounded and quite rocky. Though Mammoth Peak is not as popular as other nearby peaks, its relatively easily accessed summit affords tremendous Scenic viewpoint, views of Mount Gibbs, Mount Dana, and Mount Lewis (California), Mount Lewis. The proximity of Mammoth Peak All of the following are at least close to Mammoth Peak: * Cockscomb (Tuolumne Meadows), Cockscomb, a mountain * Johnson Peak (Tuolumne Meadows), Johnson Peak, a mountain * Kuna Crest (Yosemite), Kuna Crest, a ridge, consisting of Kuna Crest South and Kuna Crest North * Kuna Peak (Yosemite), Kuna Peak, a mountain * Lembert Dome, a granite dome ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traverse (climbing)
In climbing and mountaineering, a traverse is a section of a climbing route where the climber moves laterally (or horizontally), as opposed to in an upward direction. The term has broad application, and its use can range from describing a brief section of lateral movement on a pitch (climbing), pitch of a climbing route, to large multi-pitch climbing routes that almost entirely consist of lateral movement such as girdle traverses that span the entire rock face of a crag, to mountain traverses that span entire ridges connecting chains of mountain peaks. Long traverses in rock climbing and alpine climbing may require additional climbing techniques (e.g. a pendulum or a tension traverse), and pieces of climbing equipment (e.g. ascender (climbing), ascenders) to manage the risks of the lead climber and/or the following climber falling far off the main route. Long traverses also place increased pressure on the abilities of the following climber than in a normal climb. Traversing is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scrambling
Scrambling is a mountaineering term for ascending steep terrain using one's hands to assist in holds and balance.''New Oxford American Dictionary''. It can be described as being between hiking and climbing, rock climbing. "A scramble" is a related term, denoting terrain that could be ascended in this way. Sure-footedness and a head for heights are essential. Canyoning and stream climbing both involve scrambling. Overview Scrambling is ascending or traversing a grade without technical apparatus. Unroped ascent in exposure (heights), exposed situations is potentially one of the most dangerous of mountaineering activities. As soon as an ascent involves a rope, going up or down, it is no longer a scramble. Alpine scrambling Alpine scrambling is scrambling in high mountains and may not follow a defined or waymarked path. The Seattle Mountaineers climbing organization defines alpine scrambling as follows: Alpine Scrambles are off-trail trips, often on snow or rock, with a 'non-t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hornblende
Hornblende is a complex silicate minerals#Inosilicates, inosilicate series of minerals. It is not a recognized mineral in its own right, but the name is used as a general or field term, to refer to a dark amphibole. Hornblende minerals are common in Igneous rock, igneous and metamorphic rocks. The general formula is . Physical properties Hornblende has a Mohs scale of mineral hardness, hardness of 5–6, a specific gravity of 3.0 to 3.6, and is typically an opaque green, dark green, brown, or black color. It tends to form slender prismatic to bladed crystals, diamond-shaped in cross section, or is present as irregular grains or fibrous masses. Its planes of cleavage (crystal), cleavage intersect at 56° and 124° angles. Hornblende is most often confused with the pyroxene series and biotite, biotite mica, which are also dark minerals found in granite and charnockite. Pyroxenes differ in their cleavage planes, which intersect at 87° and 93°. Hornblende is an inosilicate (cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biotite
Biotite is a common group of phyllosilicate minerals within the mica group, with the approximate chemical formula . It is primarily a solid-solution series between the iron- endmember annite, and the magnesium-endmember phlogopite; more aluminous end-members include siderophyllite and eastonite. Biotite was regarded as a mineral ''species'' by the International Mineralogical Association until 1998, when its status was changed to a mineral ''group''. The term ''biotite'' is still used to describe unanalysed dark micas in the field. Biotite was named by J.F.L. Hausmann in 1847 in honor of the French physicist Jean-Baptiste Biot, who performed early research into the many optical properties of mica. Members of the biotite group are sheet silicates. Iron, magnesium, aluminium, silicon, oxygen, and hydrogen form sheets that are weakly bound together by potassium ions. The term "iron mica" is sometimes used for iron-rich biotite, but the term also refers to a flaky micace ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuolumne Intrusive Suite
The Tuolumne Intrusive Suite is the youngest and most extensive of the intrusive suites of Yosemite National Park, and also comprises about 1/3 of the park's area. The Suite includes Half Dome Granodiorite, Cathedral Peak Granite, and Kuna Crest Granodiorite. The largest pluton of the Tuolumne Intrusive Suite is Cathedral Peak Granodiorite, which extends long distances both the north and south of Tuolumne Meadows Tuolumne Meadows () is a gentle, dome-studded, sub-alpine meadow area along the Tuolumne River in the eastern section of Yosemite National Park in the United States. Its approximate location is . Its approximate elevation is . The term ''Tuolumn .... The southwestern part of the Tuolumne Intrusive Suite is made up of Half Dome Granodiorite. The youngest, smallest, and most central rock body is of the Johnson Granite Porphyry Age From oldest to youngest, the rock units are # Kuna Crest Granodiorite 91-88 Ma # Half Dome Granodiorite 85–83.4 Ma # Cathedral Pea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granitic Rock
A granitoid is a broad term referring to a diverse group of coarse-grained igneous rocks that are widely distributed across the globe, covering a significant portion of the Earth's exposed surface and constituting a large part of the continental crust. These rocks are primarily composed of quartz, plagioclase, and alkali feldspar. Granitoids range from plagioclase-rich tonalites to alkali-rich syenites and from quartz-poor monzonites to quartz-rich quartzolites. As only two of the three defining mineral groups (quartz, plagioclase, and alkali feldspar) need to be present for the rock to be called a granitoid, feldspathoid, foid-bearing rocks, which predominantly contain feldspars but no quartz, are also granitoids. Nomenclature and classification The terms ''granite'' and ''granitic rock'' are often used interchangeably for granitoids; however, granite is just one particular type of granitoid. Granitoids are diverse. No classification system for granitoids can give a complete ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bingaman Lake
Bingaman Lake is a lake in Tuolumne County, California, in the United States. Bingaman Lake was named for John W. Bingaman, a park ranger who stocked the lake with fish in exchange for the naming rights. The lake is below Kuna Crest and Kuna Peak. See also *List of lakes in California There are more than 3,000 named lakes, reservoirs, and dry lakes in the U.S. state of California. Largest lakes In terms of area covered, the largest lake in California is the Salton Sea, a lake formed in 1905 which is now saline. It occup ... References Lakes of Tuolumne County, California Lakes of Yosemite National Park {{TuolumneCountyCA-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammoth Peak (Yosemite National Park)
Mammoth Peak is a mountain in the area of Tuolumne Meadows, Yosemite National Park, California. The summit is a class 1-2 cross-country hike that features river crossings and boulder scrambling. The peak lies at the northern end of the Kuna Crest and is close to California State Route 120. From the road, its summit appears rounded and quite rocky. Though Mammoth Peak is not as popular as other nearby peaks, its relatively easily accessed summit affords tremendous views of Mount Gibbs, Mount Dana, and Mount Lewis. The proximity of Mammoth Peak All of the following are at least close to Mammoth Peak: * Cockscomb, a mountain * Johnson Peak, a mountain * Kuna Crest, a ridge, consisting of Kuna Crest South and Kuna Crest North * Kuna Peak, a mountain * Lembert Dome, a granite dome * Mount Dana, a mountain * Mount Gibbs, a mountain * Mount Lewis, a mountain Geology of the Mammoth Peak area Mammoth Peak is of a sheeted intrusive complex, formed in the interior of a to deep m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
