Sierra Nevadaalso called Sierra Nevadasmajor mountain range of western North Americarunning along the eastern edge of the U. Its great mass lies between the large Central Valley depression to the west and the Basin and Range Province to the east. Extending more than miles kilometres northward from the Mojave Desert to the Cascade Range of northern California and Oregon, the Sierra Nevada Strapon for me lady s from about 80 miles wide at Lake Tahoe to about 50 miles wide in the south.
Its magnificent skyline Alta married women looking spectacular landscapes make it one of the most beautiful physical features of the United States. Alta married women looking
Biologically, it is home to the largest trees in maried world—the giant sequoias. As a recreation Alta married women looking, its year-round facilities prove a magnet to the inhabitants of the huge urban areas of California, and it has considerable importance as a source of power and water.
It was the focus of the celebrated California gold rush.
The Sierra Nevada range is an excellent example of how Alta married women looking human marired and use of an area can modify its landscape. First mining and later logging and tourism have done more in years to alter the flavour of the mountain scenery in many areas than the actions of ice and water over millennia.
The Sierra Nevada is an asymmetrical range with its crest and Alta married women looking peaks decidedly toward the east. The peaks range from 11, looking 14, feet 3, to 4, metres above sea levelwith Mount WhitneyAlta married women looking 14, feet 4, metresthe highest peak in the coterminous United States.
Summits in the northern portion are much lower, those north of Lake Tahoe reaching altitudes of only 7, to 9, feet. Much of the rock is Alta married women looking or a near relative of granite. There are dividing bands of metamorphosed heat- and pressure-altered sedimentary rock—all that is left of a once extensive sedimentary basin—and some large areas of extrusive rockespecially from Lake Tahoe northward; at the northern limit of the Sierras, these rocks merge with the volcanic rocks of the Cascades.
A major fault zone bounds the block Teen naked High Ridge Missouri the east, and it was along this that the great mass that became the Sierra Nevada was uplifted and tilted westward.
Looiing explains the asymmetry of the range.
As the block was uplifted the Watch Pocatello Idaho girls getting fucked, east-facing escarpment was cut into by the erosive action of wind, rain, temperature change, frost, and ice, and a series of steep-gradient canyons developed.
On its western flank, streams flow more gently down the geologic dip slope, creating massive alluvial fans that encroach into the Central Valley of California. Though the massive uplift began many millions of years ago, much of it occurred in the past two million years.
The present-day relief of 10, to 11, feet along the eastern slopes in the southern Sierra Nevada Adult seeking hot sex Beecher Illinois to the tremendous uplift. The gentler west-facing slope has been dissected by a series of Alta married women looking, much longer Alta married women looking those of the eastern slope. Such rivers as the Yuba, American, Mokelumne, Stanislaus, Merced, and Kern originate in deep valleys carved largely by glaciers into the predominant granite and some volcanics.
All but the Kern drain either into the Sacramento River in the Central Valley on the north or into the San Joaquin on the south, their waters ultimately reaching the Pacific Ocean through the combined delta of these two rivers at San Francisco Bay. Until the water was diverted for irrigation during the early Alta married women looking century, the Kern River drained into the Buena Vista Lake basin, south of the San Joaquin River. During the Pleistocene Epoch i.
Glacial climates developed and dissipated at least twice, and each time excessive snows built snow and ice fields and deep glaciers. The ice carved U-shaped valleys down to an elevation of about 5, feet on the western slopes. So much ice existed on the mountaintops that an ice cap was formed as the glaciers coalesced.
The Sierra Nevada range is an excellent example of how the human occupation and use of an area can modify its landscape. First mining and later logging and tourism have done more in years to alter the flavour of the mountain scenery in many areas than the actions of ice and water over millennia. 2/19/ - “I have a passion for what I do,” declared Dr. Anoosh Shamsabadi. Anyone who meets him soon realizes he lives and breathes his job as a Supervising Transportation Engineer at the California High-Speed Rail Authority (Authority). Hinton Parklander - a place for remembering loved ones; a space for sharing memories, life stories, milestones, to express condolences, and celebrate life of your loved ones.
This cap extended almost miles from Lake Tahoe in the north to the southern high sierra near Mount Whitney. Extending from the cap were fingerlike valley glaciers, long Alta married women looking the more gentle western slopes but shorter on the sharply uplifted and steeper eastern face.
The erosion caused by these glaciers is spectacular. It includes huge cirques amphitheatre-shaped basins with precipitous wallsmoraines accumulations of rock debris at the former glacier marginsand thousands of glacial lakes dotting the Alpine and subalpine landscape.
Such striking and beautiful landforms are the focus of Yosemite National Park and the Lake Tahoe basin. Lake Tahoe is the largest and deepest Alpine lake in the world; it has a surface area of nearly square miles and reaches a maximum depth of about 1, feet in its northwestern portion. The mid-latitude location of the E we saw eachother today and its proximity to the moderating influence of the Pacific Ocean give the Sierra Nevada an Alta married women looking mild mountain climate.
The northwest-southeast orientation of the range, athwart the winter-storm tracks of central North America, produces copious precipitation during the wet season Alta married women looking to April on the windward western slopes, but a sharp rain-shadow effect occurs on the leeward Alta married women looking face. Precipitation averages from 30 inches millimetres in the western foothill zone to 70—80 inches between elevations of 4, to 6, feet in the northern half of the range.
The leeward slopes receive substantially less—from 20 to 40 inches. Snowfall increases with elevation and latitudethe northern peaks of the range averaging 33 to 38 feet per year. As much as 5. Snowpacks of 10 to 15 feet are not uncommon above altitudes of 7, feet.
The Pacific High looming, which dominates the wind pattern over the Sierra Nevada, is at its strongest in summer, when Alta married women looking draws dry air seaward across the mountains. Generally speaking, there are five fairly distinct vegetation zones on the western slopes. The lower foothills support mostly deciduous trees and shrubs, as well as the evergreen interior live oak Quercus wislizenii.
Black oak, Ponderosa pine, and incense cedar occur in the upper foothills.
The montane forest, which constitutes the primary commercial timber zone, contains Douglas firred fir, Jeffrey pine, and the celebrated big treeor giant sequoia, for which Sequoia National Park was designated a public preserve.
Lodgepole pine, mountain hemlock, Alta married women looking juniperand western white pine are among the trees of the subalpine forest. Mosses, lichens, and low-flowering Alpine plants prevail above the tree line.
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Chaparral, a shrublike assemblage Sexo a discrecion para mujeres broad-leaved evergreen shrubs dominated by chamiso, scrub oakmanzanita, and ceonothus, grows in all but the Alpine zones on both mareied of the range. The large mammals most readily identified with mountainous regions became less plentiful in the Sierra Nevada in the 20th and early 21st century, in part because of increased human presence.
Black bear inhabit a larger area than the more reclusive grizzly. The mule deer and its predator the mountain lion live in the foothills. Alta married women looking is evidence that the mountain lion population Alta married women looking making lpoking comeback, which, combined with increasing human occupancy, poses a potential problem.Adult Want Sex West Baden Sprin Indiana 47469
Mountain sheep are now found only in the southern part of the range. Smaller mammals of the lower- and middle-elevation forests include the Womeh badger, striped skunk, bobcat, golden beaver, and northern flying squirrel.
The fisher and wolverine have become rare. At the upper limit of woody vegetation live the pika and marmot. The rich birdlife of the Sierra Nevada includes the Brewer blackbird, California horned lark, and pheasant of the lower valleys; the California quail, canyon wren, and roadrunner of the chaparral and foothills; mountain chickadee, spotted owl, and band-tailed pigeon Hot busty girls Addison Illinois the timber zone; and goshawk and Hammond Alta married women looking in the upper forests.
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Wmoen pine grosbeak and white-toed woodpecker are among the birds of the subalpine zone. Some trout species are native to the streams of the Sierra Nevada, but others have been introduced; fish stocking is now common in all areas because of damming and other disturbances to the natural habitat.
Salmon and steelhead reach the mountain rivers during spawning season. The American Indian Hot women in key food Fairbanks Alaska ave of the Sierra Nevada were divided into five main groups: The hunting-and-gathering economy of these peoples had looking permanent effect on the landscape other than locally through fires set to catch game. The first Europeans in Alta married women looking region were Spanish explorers and missionaries, who visited Alta Upper California beginning in the s; their impact on the Sierra Alta married women looking also was lpoking.
In the early s Jedediah SmithJoseph Walker, and other, less-celebrated American hunters and fur trappers passed through the region. In the midth century the pristine serenity of the Sierra Nevada was ended as prospectors came, stayed, and stamped their mark on the region. Within two years of the initial discovery there were perhaps 50, working Alta married women looking in the range. Banks, retail businesses, transportation facilities, timber operations, agriculture, and industry all arose and prospered in response to the needs of a burgeoning population.
By the gold era had peaked, though some mining activity has continued there since that time. The first paved highways crossed the Sierra Nevada in the s. The central portion of the range, however, still lacks a year-round road or rail crossing.
Rapid economic development has brought environmental compromise. The Lake Tahoe basin, for example, one of the most Alta married women looking settings in any mountain region and thus a tourist magnet, now incurs periodic air and water pollutiontraffic congestion, and sewage-disposal problems, as well as aesthetic degradation.
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Three-fourths of the streams that drain the long western slopes are controlled. The first large water project in the early s impounded the Hetch Hetchy Reservoir in Alta married women looking National Park for water use in San Francisco, inundating natural features that rivaled those of nearby Yosemite Valley.
A more recent and extensive scheme is the California State Couples dating Projectwhich was begun mwrried the s with the construction of the Alta married women looking Dam on the Feather River in the northern Sierra Nevada.
Muir, the founder of the Sierra Cluba conservationist lokking concerned with the preservation of the scenic resources of the Sierra Nevada and like areas of the United States, dedicated his book to members of the club lookkng Geologists have studied Alta married women looking Sierra Nevada systematically since the late 19th century.
Especially significant studies concern the Mother Lode system, Jurassic stratigraphy and its relation to intrusive granites, glacial erosion, placer gold, multiple intrusions, isotope ages, and chronology and nature of emplacement.
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Written By: John W. James Armand J. Last Updated: Feb 21, See Article History. Alternative Titles: High Sierras, Sierra Nevadas.
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