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Topic: Geology of Mount Shasta


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  Mount Shasta - Wikipedia, the free encyclopedia
Mount Shasta and Shastina from the Butte Valley (North-East)
Mount Shasta, (formerly known as Mt. Sisson until 1922) a 14,179-foot (4,322 m) stratovolcano, is the second-highest peak in the Cascade Range and the highest peak in California outside of the Sierra Nevada [1].
Shasta is mentioned in "Lost Legacy", a fictional short story by Robert Heinlein as the home of a group of men who are masters of psychic powers and who decide to teach the world their powers by enlisting Boy Scouts.
en.wikipedia.org /wiki/Mount_Shasta   (631 words)

  
 Middle East Open Encyclopedia: Geology   (Site not responding. Last check: 2007-11-01)
The most significant advance in 20th century geology has been the development of the theory of plate tectonics in the 1960s.
In geology, when an igneous intrusion cuts across a formation of sedimentary rock, it can be determined that the igneous intrusion is younger than the sedimentary rock.
The principle becomes quite complex, however, given the uncertainties of fossilization, the localization of fossil types due to lateral changes in habitat (facies change in sedimentary strata), and that not all fossils may be found globally at the same time.
www.baghdadmuseum.org /ref/index.php?title=Geology   (1619 words)

  
 Geology of Mount Shasta - Wikipedia, the free encyclopedia
Over time an ancestral Shasta stratovolcano was built to an unknown height but sometime between 300,000 to 360,000 the entire north side of the volcano collapsed, creating an enormous landslide, 6.5 mile³ (27 km³) in volume.
The remains of the oldest of Shasta's four cones is now exposed at Seageants Ridge on the south side of the mountain.
The last lavas to erupt from the vent were hornblende-pyroxene andesites with a hornblende dacite dome at its summit.
en.wikipedia.org /wiki/Geology_of_Mount_Shasta   (512 words)

  
 Geology 208 Cascade Volcano Report - Mt. Shasta
Shasta's volume of about 80 cubic miles was erupted during the last million or so years in outbursts that produce large numbers of lava flows, mostly composed of brown andesite and in its final stages of activity, ash falls.
Mount Shasta has erupted, on the average, at least once per 800 years during the last 10,000 years, and about once per 600 years during the last 4,500 years.
On the basis of its past behavior, Shasta is not likely to erupt large volumes of pumiceous ash in the future; areas subject to the greatest risk from air-fall tephra are located mainly east and within about 50 kilometers of the summit of the volcano.
www.eskimo.com /~normb/geo208/mtshasta/mtshasta.html   (628 words)

  
 GO 326/ES 767 Cascade volcanism
Mount Shasta is the queen of the Cascade volcanic peaks.
Mt. Shasta is in fact a composite structure built of two major cones--Shastina on the northwest flank and Hotlum on the summit, as well as several other eruptive centers and deposits.
Geology of Mount Shasta from the College of the Siskiyous.
academic.emporia.edu /aberjame/tectonic/cascade/cascade.htm   (1524 words)

  
 Mt. Shasta Chamber of Commerce - History
The area north of Mount Shasta was the territory of the Shasta Indians.
Mount Shasta is now world famous, but it still retains it's small town charm.
The Significance of Mount Shasta as a Visual Resource from the College of the Siskiyous, including At Sisson's with Bierstadt, Hill, Keith, and Muir 1860s-1870s, The San Francisco Art Boom 1860s-1880s and others.
www.mtshastachamber.com /livehist.html   (3808 words)

  
 Overview of the History of Mount Shasta
Shasta, and the artwork and descriptions of the Shasta region as found in the published reports are a major contribution to the legacy of Mt. Shasta arts and sciences.
Shasta are discussed in such books as John Signor's 1982 Rails In the Shadow of Shasta...(and his updated version in the year 2000 entitled :"Southern Pacific's Shasta Division: Over a Century of Railroading in the Shadow of Mt. Shasta") and Robert Hanft's Pine Across the Mountain.
Mount Shasta as a symbol of high ideals, as a symbol of God's domain, as a symbol of purity, and as an inspiring presence, are just some of the varied themes which run through the 19th and 20th Century poems about this majestic mountain.
www.siskiyous.edu /shasta/his/index.htm   (8156 words)

  
 Shasta River Basin Geology
The Shasta River drains two geologic provinces: the Cascade Province to the east and the Klamath Province to the west.
Mount Shasta dominates the landscape almost everywhere in the Shasta River watershed.
Crandell, D.R. Gigantic debris avalanche of Pleistocene age from ancestral Mount Shasta Volcano, California, and debris-avalanche hazard zonation.
www.krisweb.com /hydrol/geo_shasta.htm   (372 words)

  
 ESRI Map Book Volume 16: Geology - Digital Shasta — Applying GIS Technology to Volcano Hazards
The U.S. Geological Survey(USGS) Volcano Hazards at Mount Shasta project is charged with mapping the geology and assessing the volcano hazards of the Mount Shasta region.
Mount Shasta was chosen for study because it is the largest Cascade Range stratocone volcano and has produced more documented eruptions in the past 4,000 years than any Cascades' volcano other than Mount St. Helens.
At 14,161 feet, Mount Shasta is the highest and most recognizable landmark in northern California.
www.esri.com /mapmuseum/mapbook_gallery/volume16/geology4.html   (336 words)

  
 Geology   (Site not responding. Last check: 2007-11-01)
Geology (from Greek γη- (ge-, "the earth") and λογος (logos, "word", "reason")) is the science and study of the Earth, its composition, structure, physical properties, history, and the processes that shape it.
The word "geology" was first used by Jean-André Deluc in the year 1778 and introduced as a fixed term by Horace-Bénédict de Saussure in the year 1779.
Geology of the Zion and Kolob canyons area (Utah)
www.1bx.com /en/Geology.htm   (1472 words)

  
 GEOLOGY FACTS AND INFORMATION   (Site not responding. Last check: 2007-11-01)
Sir_Charles_Lyell first published his famous book, ''Principles of Geology'', in 1830 and continued to publish new revisions until he died in 1875.
By 1827 Charles_Lyell's ''Principles of Geology'' reiterated Hutton's uniformitarianism, which influenced the thought of Charles_Darwin.
There are a number of different types of intrusions, including stocks, laccoliths, batholiths, sills and dikes.
www.witwib.com /?s=geology   (1399 words)

  
 Shasta, California
Shasta, 40 miles (65 km) south of the California-Oregon border is the second highest (14,161 feet, 4,317 m)mountain in the Cascade Range.
The Hotlum cone is the youngest eruptive center and forms Shasta's summit and the north and northeast flanks.
The hummocks in the foreground are debris avalanche deposits from Shasta that are between 300,000 and 380,000 years old.
volcano.und.nodak.edu /vwdocs/volc_images/north_america/california/shasta.html   (564 words)

  
 Mount Shasta Annotated Bibliography - Chapter 19
The author is an expert on the legends of Mount Shasta and has written hundreds of newspaper articles on all facets of Mt. Shasta lore.
Discussion centers on several of the books responsible for the Mt. Shasta legends, and although there is little critical commentary as to the accuracy of the books, there is nonetheless a well-integrated presentation of the more important Mt. Shasta myths as they developed from these books.
Also mentioned are the spiritual groups which have used Mount Shasta as a base, including the Radiant School, Astara, Elizabeth Clare Prophet's group, the Zen Buddhist Abbey, Sree Sree Parvoo, A.S.S.K., an Essene group, and the Azariah group.
home.att.net /~novel-by-pbdas/Mother-Mary-Mae-Maier/HTML/B19.htm   (1043 words)

  
 NPS: Nature & Science» Geology Resources Division   (Site not responding. Last check: 2007-11-01)
Before the 1980 eruption of Mount Saint Helens in Washington, Lassen Peak was the most recent volcanic outburst in the contiguous 48 states.
Remnants of its caldera flanks are Brokeoff Mountain, Mount Diller, Pilot Pinnacle, and Mount Conard.
The park's geology may be described in regional or state geology texts.
www2.nature.nps.gov /geology/parks/lavo   (1062 words)

  
 [No title]   (Site not responding. Last check: 2007-11-01)
Shasta Volcanic Scenic Byway Majestic Mt. Shasta rises 14,162 feet to form the center and heart of the Shasta Volcanic Scenic Byway in Northern California.
At Weed, a town on the western slopes of Mount Shasta, the route heads south on Interstate 5.
The Shasta Volcanic Scenic Byway is one of 10 National Forest Scenic Byways in Northern California.
www.csuchico.edu /sp/tourism/website/media_releases/long/svsblong.txt   (872 words)

  
 USGS Geology in the Parks
Although the largest volcanoes like Mount St. Helens get the most attention, the Cascades is really made up of a band of thousands of very small, short-lived volcanoes that have built a platform of lava and volcanic debris.
Mount St. Helens, shown above, and at least six other volcanoes in the Cascade Range have erupted at least once during historical time.
Major volcanic centers are Mount Baker, Glacier Peak, Mount Rainier, Mount St. Helens, Mount Adams, Mount Hood, Mount Jefferson, Three Sisters, Newberry Caldera, Crater Lake (Mount Mazama), Medicine Lake, Mount Shasta, and Lassen Peak.
geopubs.wr.usgs.gov /docs/parks/province/cascade1.html   (240 words)

  
 The Geology of Mount Shasta: Figure 15   (Site not responding. Last check: 2007-11-01)
The left photo is a view southeastward across the deposit towards Mount Shasta.
The small hills in the foreground are coherent blocks of lavas and pyroclastic rocks from ancestral Mount Shasta that were carried northward in the finer-grained matrix that surrounds them.
The right photo shows a cross-section of one of the blocks, composed of layered pyroclastic and debris flow deposits, exposed in the wall of a quarry at the north end of the Lake Shastina dam.
www.siskiyous.edu /shasta/geo/fig15.htm   (117 words)

  
 Steep Trails, by John Muir (1918) - The Writings of John Muir - John Muir Exhibit (John Muir Education Project, Sierra ...   (Site not responding. Last check: 2007-11-01)
The chapters on Mount Shasta, Oregon, and Washington will be found to contain occasional sentences and a few paragraphs that were included, more or less verbatim, in The Mountains of California and Our National Parks.
Mount Shasta after a Snowstorm A view from the west, near Sisson.
Mormon Lilies The plant is known in Utah as the Sego Lily, and in California and elsewhere as the Mariposa Tulip (Calochortus Nuttallii).
www.sierraclub.org /john_muir_exhibit/writings/steep_trails   (786 words)

  
 Shasta River - TheBestLinks.com - California, Geology, United States, Volcano, ...   (Site not responding. Last check: 2007-11-01)
It flows generally northwest through the Shasta Valley, past Weed, through Lake Shastina, and past Montague.
The central valley is covered with small hillocks that are the debris from the liquefication of the ancestral Mount Shasta (on the site of present Black Butte) approximately 300,000 years ago.
Mount Shasta Bioregional Water Center: Dewatering of the Shasta River (http://www.mountshastaecology.org/17other02dewatered.html)
www.thebestlinks.com /Shasta_River.html   (256 words)

  
 Is Mount Shasta a potentially dangerous volcano?
Our studies tell us a lot about how Mount Shasta has behaved in the past, going back as far as an older volcano that was destroyed by an enormous landslide about 300,000 years ago and coming up to our own experiences of recent debris flows.
Finally, we know that Mount Shasta is an active volcano—it erupted only about 200 years ago and has erupted many times in the past few thousand years.
We can use the knowledge gained from our studies at Mount Shasta to estimate the probabilities that certain types of events will occur again in the near future.
volcanoes.usgs.gov /Hazards/Where/ShastaDanger/answer.html   (584 words)

  
 Geology of Mount Shasta   (Site not responding. Last check: 2007-11-01)
On September 23 and 25, Jennie and I attended the two three-hour lectures entitled "The Geology of Mount Shasta" taught by William Hirt, PhD, the geology professor at College of the Siskiyous (COS) in Weed.
On the Saturday following the two lectures, Professor hirt conducted a nine-hour field trip completely encircling Mount Shasta with stops at nine sites to intimately explore a lava-tube cave; lava flows; volcanic domes; mud flows; igneous rocks; the indications of Mount Shasta's four major eruptive events; glaciation features; and a cross section of pyroclastic flows.
By the time we had finished the lectures and the tour of the mountain our knowledge of Mount Shasta's geologic setting; the forces that created it; its eruptive history; and its potential volcanic hazards were well understood by every student.
users.snowcrest.net /weshawk/MSGeology.html   (240 words)

  
 ICE, ERUPTIONS, AND AVALANCHES: DISTINGUISHING LAHAR ORIGINS WITH EXAMPLES FROM MOUNT SHASTA, CA
Mount Shasta in northern California provides an ideal setting for studying lahars of three primary origins: climatic fluctuations, eruptions, and debris avalanche transformations.
Deposits from an enormous debris avalanche which occurred ~ 350 ka on the north side of Mount Shasta have been recognized for years (Crandell, 1989), but there is evidence that this avalanche triggered lahars on the south flank of the mountain.
A south-flank lahar similar in age to the avalanche contains large amounts of pumice, evidence that an eruption occurred prior to or coincident with the avalanche.
gsa.confex.com /gsa/inqu/finalprogram/abstract_55858.htm   (425 words)

  
 Mount Shasta Begins to Wake [Free Republic]
You know, Mt. Shasta is the place where a lot of the hippies and other assorted New Age wackos go to meditate and "feel the vibes" and such.
No doubt the greenies that worship Shasta as a god have managed to find some means to awaken the anger of the volcano so that it can erupt and destroy encroaching civilization and return the surrounding area to the pristine wilderness intended by "Gaia".
Shasta is one of only a handful of peaks in the USA where it is possible to Ski in the summer.
www.freerepublic.com /forum/a3a41f1d44057.htm   (3916 words)

  
 Amazon.com: Mt. Shasta: California's Mystic Mountain: Books   (Site not responding. Last check: 2007-11-01)
Shasta is an energy vortex, drawing to her numerous energies beyond our third dimensional abilities to perceive.
Right on!" One aspect of 'Mt. Shasta, California's Mystic Mountain' that is no mystery is the feeling of love that Emilie Frank's children, especially Jennifer Middleton, have for their mother.
And to Jennifer and the others who saw to the publication of these mysteries I say, "Job well done," for the only thing I found lacking was a map of the mountain and her surroundings, showing the locations of the trails, lakes and crags that the author describes and knew so well.
www.amazon.com /exec/obidos/tg/detail/-/1888740086?v=glance   (952 words)

  
 [No title]
Geology is the study of the Earth's origin, history and structure.
Geology is the study of Earth's beginnings, its structure and its changes.
Contact a geology department of a nearby university and ask if they have a working seismograph or find out if there is a seismograph station in the area.
www.cstone.net /~bcp/4/4OSci.htm   (11522 words)

  
 Volcanoes   (Site not responding. Last check: 2007-11-01)
The Cataclysmic 1991 Eruption of Mount Pinatubo, Philippines.
Mount Rainier is not an isolated volcano, for from Lassen Peak in California to
Cascade Mountains, Mount Rainier is a dormant volcano east of Tacoma.
everyschool.org /u/global/tlai/volcanoes.html   (1751 words)

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