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Topic: Mount Lassen

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Lassen Volcanic National Park

Mount Saint Helens

Lassen County, California

Lassen Peak

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Cinder cone

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	Lassen Peak
		Lassen Peak, in Shasta County, California USA, is the largest plug dome volcano in the world and is the southernmost volcano in the Cascade Range.
		Lassen is located in north-central California in the Shasta Cascade region and is the centerpiece of Lassen Volcanic National Park.
		Lassen Peak was named in honor of Danish flsmith Peter Lassen who guided immigrants past the peak to Sacramento Valley in the 1830s.
	www.sciencedaily.com /encyclopedia/lassen_peak (607 words)

	19 May 1915 Eruption of Lassen Peak
		The Lassen Peak eruptions of 19 and 22 May 1915 were the most violent in a series of eruptions that began a year earlier and continued until late 1917.
		This increase in discharge was presumably caused by the emplacement of a major lahar in the upper reaches of the creek.
		Finch RH (1930) Mudflow eruption of Lassen mudflows.
	barsoom.msss.com /earth/lassen/lassen2.html (5889 words)

	Mount Lassen. From "The Far Side of the Sky" by Christopher E. Brennen
		Mount Lassen is a beautiful snow-covered volcano in northern California, part of the southern Cascade Range and not far north of the Sierra Nevada.
		Along this sector of the ``Ring of Fire'' as the tectonic edge of the Pacific basin is known, volcanoes are born, live and die in the monstrous battles between the plates of the Earth's crust.
		Mount Rainer is quite unlike Mount Lassen, its gleaming mantle of ice being composed of more glaciers than any other mountain in the United States outside of Alaska.
	www.dankat.com /mstory/lassen.htm (1589 words)

	Sample Chapter for Fisher, R.V., Heiken, G., Hulen, J.B.: Volcanoes: Crucibles of Change.
		The main evacuation artery north of Mount St. Helens, Washington State Highway 504, was jammed with sightseers, there to witness the first eruption in the lower forty-eight states since Mount Lassen erupted in 1914.
		Mount St. Helens straddles Cowlitz and Skamania Counties, is bordered on the north by Lewis County, and lies within the U.S. Forest Service's Gifford Pinchot National Forest of southern Washington.
		Before the eruption, Mount St. Helens was one of the premier outdoor playgrounds in the state of Washington, being easily accessible to the major population centers of Portland and Seattle.
	www.pup.princeton.edu /chapters/s6041.html (4759 words)

	California Guide - Lassen Volcanic National Park
		Lassen Peak was originally a side-vent of a much larger volcano, posthumously named Mount Tehama, that exploded with huge force many thousands of years ago leaving a ring of hills some 3 miles across.
		Lassen is one of the most unusual places in California, and one of my favourite National Parks, and yet is relatively little visited, partly because it is a long way from most other famous natural attractions in the state.
		Lassen National Park is 200 miles from San Francisco, and is part of a sparsely-populated hilly area north of the Sierra Nevada mountains.
	www.americansouthwest.net /california/lassen_volcanic/national_park.html (514 words)

	Lassen Volcanic National Park
		Lassen Volcanic National Park, located in north central California at the southern end of the Cascade mountain range, is the only national park containing a volcano which has erupted in the twentieth century.
		Helens, Lassen is the most recently active volcano in the continental United States, having erupted continuously during 1914-1917.
		Lassen Peak is a stratovolcano--a volcano which is composed of alternate layers of lava and volcanic ash.
	www.shannontech.com /ParkVision/Lassen/Lassen.html (962 words)

	California Guide - Lassen Volcanic National Park - Lassen Peak
		Until the explosion of Mount St. Helens in 1980, Lassen Peak was the only active volcano in the US since 1851, apart from some in Hawaii and Alaska.
		Lassen Peak is the most southerly member of the Cascade range, a series of largely dormant volcanoes extending as far north as British Columbia in Canada.
		To the southwest is the area once occupied by ancient Mount Tehama, and it is possible to see the circle of lower peaks that mark the approximate edge of the caldera (crater) boundary.
	www.americansouthwest.net /california/lassen_volcanic/lassen_peak.html (473 words)

	The Significance of Mount Shasta as a Visual Resource: Women Artists
		She climbed Mount Lassen in 1864, being the first white women to do so - Lake Helen of Mount Lassen is named after her.* She taught art in Oakland in 1867 and gave Arthur Matthews his first art lessons.
		To avoid confusion, it should be stated that the Lake Helen on Mount Shasta was named by local Mount Shasta artist and mountaineerEdward Stuhl in honor of a climb of Shasta accomplished together with the beautiful and athletic Helen Wheeler, who was his friend and the former owner of a large tract of McCloud property.
		Her paintings of Mount Shasta are problematic, because she was consistently inaccurate in portraying the topography of the mountain; she preferred to make it one cone with a split down its middle.
	www.siskiyous.edu /shasta/art/wom.htm (2425 words)

	Mount Diablo State Park Highlights (Site not responding. Last check: 2007-10-08)
		North and east of Mount Diablo the San Joaquin and Sacramento Rivers meet to form the twisting waterways of the Delta.
		As a matter of fact, Mount Diablo base and meridian lines are referred to in legal descriptions of real estate throughout two-thirds of California and parts of Nevada and Oregon.
		In 1921, a parcel of land on the mountain was designated a state park, and much of the rest of the mountain was declared a game refuge.
	www.mdia.org /parkhighlights.htm (501 words)

	Skiing the Cascade Volcanoes: Lassen Peak
		Lassen Peak is the southernmost active volcano in the Cascade Range, located in northern California halfway between Lake Tahoe and the Oregon border.
		Prior to Mount Saint Helens in 1980, Lassen was the last volcano in the continental U.S. to erupt, with a major series of eruptions starting in 1914 and continuing sporadically until 1921.
		Lassen is one of the largest plug domes in the world, a massive block of dacite lava extruded up from the shattered remains of the collapsed Mount Tehama stratovolcano.
	www.skimountaineer.com /CascadeSki/CascadeSki.php?name=Lassen (1055 words)

	Physical Geology Slides-Volcanoes
		Mount Lassen, California is the southernmost major peak in the Cascade Range and erupted in 1914-17.
		Mount Saint Helens as it appeared from the northwest in December, 1980.
		Mount Rushmore was picked for the sculpture because of its granite, but the granite is actually a relatively thin lens on the top of the mountain.
	www.uwgb.edu /dutchs/EarthSC202Slides/VOLCSLID.HTM (1621 words)

	CVO Website - Lassen Peak Volcano, California
		Lassen's long and complex eruptive history is a 600,000-year-long record of volcanism associated with the generation, rise, emplacement, and evolution of a plutonic magma body in the crust.
		Monitoring of the Lassen area includes periodic measurements of ground deformation and volcanic-gas emissions and continuous transmission of data from a local network of nine seismometers to USGS offices in Menlo Park, California.
		Cinder Cone is a 700-foot-high cone of loose scoria.
	vulcan.wr.usgs.gov /Volcanoes/Lassen/description_lassen.html (5403 words)

	deseretnews.com \| Lassen Peak erupted in '15
		Answer: Until Mount St. Helens awoke in 1980, Lassen Peak in California was the most recent volcano to have a significant eruption in the contiguous 48 states.
		Lassen Peak, also known as Mount Lassen, is the southernmost volcano in the Cascade Range, the same string of mountains that includes St. Helens.
		Lassen is about 100 miles south of the Oregon-California line in the Lassen Volcanic National Park, the site of volcanic activity for millions of years.
	deseretnews.com /dn/view/0,1249,595099154,00.html (226 words)

	Sunset: Mount Lassen, apres ski lift. (Lassen Volcanic National Park)@ HighBeam Research (Site not responding. Last check: 2007-10-08)
		Even though downhill skiing is no more, it's still a great place for winter play LAST AUGUST, WHEN the small downhill ski facility at Lassen Volcanic National Park was removed, some local skiers and businesspeople were dismayed.
		Downhill skiing, after all, had been a part of winter in the south Lassen area since 1939.
		But others were pleased to see the lifts go and to have the park return to a more pristine condition.
	www.highbeam.com /library/doc0.asp?DOCID=1G1:15143348&refid=ip_encyclopedia_hf (177 words)

	Lassen Volcanic National Park Area Campgrounds
		In May 1915, Mount Lassen exploded with a fury similar to that of Mount St. Helens in 1980.
		Today, ecologists are studying the Mount Lassen area to see what the future has in store for the devastated terrain of Mount St. Helens.
		Although Mount Lassen itself is dormant, volcanic activity is evident in the steam vents, mud pots, and boiling springs of Sulphur Works and Bumpass Hell, which you can visit via a combination of short trails and boardwalks.
	www.trails.com /explore/tcatalog_trail.asp?AffID=mz01&TrailID=HGS410-008A (162 words)

	Mount Lassen Vacation Rentals, Hotels, Weather, Map and Attractions
		Situated on the southern tip of the Cascade Mountains, Mount Lassen is an active, although “sleeping” volcano that last erupted in 1915.
		Mount Lassen is less visited than other popular California attractions and travel is restricted in wintertime, due to heavy snowfalls.
		But, Mount Lassen is one of the most unusual and fascinating places in the state.
	www.californiavacation.com /regions/Mount-Lassen-California.html (486 words)

	Mount Lassen, California
		Until Mount Saint Helens in 1980, Mount Lassen in California was the most recently active volcano in the United States.
		A miner nicknamed for an unusual anatomical quirk reputedly discovered this geothermal area on the east flank of Mount Lassen.
		Mount Lassen is hardly visible from the approach on highway 44 except for some ranch clearings a few miles west of the park entrance.
	www.uwsp.edu /geo/projects/geoweb/participants/dutch/VTrips/Lassen.HTM (337 words)

	CVO Website - Lassen Volcanic National Park
		Lassen Volcanic became a national park in 1916 (106,000 acres), because of its significance as an active volcanic landscape.
		Lassen Peak began erupting in 1914, had the most significant activity in 1915, and had minor activity until 1921.
		Lassen Volcanic National Park is located fifty miles east of Red Bluff on highway 36, and 50 miles east of Redding on highway 44.
	vulcan.wr.usgs.gov /Volcanoes/Lassen/Locale/framework.html (778 words)

	Cascade Peaks: Mount Tehama (Brokeoff Mountain & Mount Diller)
		The difference is that Mount Tehama's caldera developed an outlet, so the rain and snowmelt run out instead of filling up the caldera.
		Many years later Mount Tehama, or Brokeoff Volcano, as he calls it, grew and was mostly eroded away, leaving Brokeoff Mountain and Mount Diller as remains.
		Lassen Peak eventually grew on the flank of the former Brokeoff Volcano.
	www.mind.net /dlmark/ctehama.htm (456 words)

	Introduction to Mount Lassen - Reflections by Craig Palmer
		If you are interested in learning more about the geology and geothermal features of Mount Lassen Volcanic National Park, please visit the official USGS fact sheet or the National Park Service web site at www.nps.gov/lavo.
		Mount Lassen could very well be both a destination of happiness and a journey through some of the most beautiful and unique landscape in California.
		Lassen is somewhat of an unknown gem and boasts a mere 400,000 visitors per year.
	www.craigpalmerdesign.com /lassen/intro.html (177 words)

	MOUNT LASSEN CALIFORNIA REPTILIAN STRONGHOLD!?~ TGS HiddenMysteries Reptilian Agenda (Site not responding. Last check: 2007-10-08)
		Many have indicated that their lives have been all but sabotaged emotionally, mentally, and even physically by these implants, which 'serve' as a 'back door' for the aliens to invade a human mind and influence or manipulate their victims' thoughts patterns in such a way as to accommodate their other-worldly agenda...
		Lassen is a dormant volcano, part of the Cascade range of California, Oregon, Washington and southwestern Canada.
		There is evidence that a prehistoric race, possibly akin to the Murians and Atlans, had conquered the interior of the earth in the most distant past, having left the evidence of their ancient presence deep within the subterranean recesses of the earth, to be found later by humans and aliens alike.
	www.reptilianagenda.com /exp/e111600a.shtml (4737 words)

	Mount Diablo SP
		Telescopes are mounted on the deck to help visitors enjoy one of the finest views in the world.
		Above the rotunda is a beacon, historically important to aviators and now lighted once a year on December 7 in memory of those who lost their lives at Pearl Harbor.
		The gift shop is operated by the Mount Diablo Interpretive Association, which works as a support group to the park in providing visitors with information so they can better enjoy the park and its natural wonders.
	www.parks.ca.gov /?page_id=517 (801 words)

	Mount Rainier National Park (Nature Notes)
		The recent eruptions of Mount St. Helens are the first volcanic eruptions in the continental United States since California's Mount Lassen in 1917.
		Mount St. Helens is still in the cone building stage.
		Unlike Mount St. Helens, which is younger and is materials, Mount Rainier is a composite volcano, andesite lava flows bedded between layers of ash composed of explosive pyroclastic built mainly of hundreds of andesite lava flows bedded between layers of ash and pumice.
	www.nps.gov /mora/notes/vol2a-9c.htm (454 words)

	Mount Lassen Notes From 1999 (Site not responding. Last check: 2007-10-08)
		Mount Lassen Volcanic National Park - The final field trip of the Stanislaus Geological Society for 1999 took place over the 7th through the 10th of October.
		The society's visitors were treated to spectacular weather and unparalleled vistas draped with the early colors of the fall season.
		As one might imagine, of the multitude of volcanic features present in the park, Mount Lassen offers up the greatest challenge to those that wish to view the park from its summit.
	www.mlode.com /~glenw/archive/lassen99/lassen-99.htm (364 words)

	Lassen Volcanic National Park (National Park Service)
		Lassen Volcanic National Park is located in Northeastern California at the southern terminus of the Cascade Mountains, approximately 50 miles east of Redding, California.
		Beneath Lassen Volcanic's peaceful forests and gem-like lakes lies evidence of a turbulent and fiery past.
		Lassen Volcanic became a national park in 1916 because of its significance as an active volcanic landscape.
	www.nps.gov /lavo (296 words)

	Motorcycle Ride Lassen Volcanic National Park, California
		Lassen is centrally located in northern California and surrounded by major roads.
		Mt. Lassen began erupting in 1914 (and continued into 1915) with a blast that closely resembled that of the Mt Saint Helens eruption in 1980.
		Saint Helens, the eruption of Lassen in 1917 devastated a vast area of the mountainside.
	www.pashnit.com /roads/cal/Lassen.htm (1061 words)

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