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L49 Dormant volcano. Mt Shasta. California, USA
Position:
N41° 24' 34''
W122° 11' 38'' (summit position)
Elevation:
14162' /4317m (at the summit)
Image format:
35mm
A SLEEPING VOLCANO
This beautiful, snow-covered mountain is very high, reaching over
14000' (over 4000m) in Northern California, USA. The mountain
is really a sleeping volcano that could wake up and erupt explosively
at any time. The mountain was built by frequent violent ERUPTIONS
of ASH and LAVA, over many thousands of years. This mountain,
Mt Shasta, is one of a long chain of volcanoes that forms the
CASCADE RANGE in America's Pacific North West. The chain that
runs in a line from northern California into Canada and includes
famous volcanoes like Crater Lake, in Oregon and Mts Hood, ST
Helens and Rainier in Washington state. Many of the volcanoes
have erupted recently - - Lassen erupted in 1915 and Mt St Helens
in 1980. These and many other violently eruptive volcanoes are
directly linked to colliding TECTONIC PLATES. There will be much
more about these large scale structures in the regolith.com library.
More detail
Image Trail:
L6 Volcanic neck and dyke. Ship Rock. New Mexico, USA
L7 Igneous dyke radiating out from volcanic neck. Ship Rock. New
Mexico, USA
L19 Volcanic Neck. Devil's Tower. National Monument. Wyoming, USA
L20 Volcanic Neck. Devil's Tower. National Monument. Wyoming, USA
L79 Glacial Polish on polygonal basalt, Devil's Post Pile, California,
USA
L80 The Giant's Causeway, Co. Antrim, Northern Ireland, UK
Links:
www.volcano.und.edu/cgi-bin/big_search.cgi?keywords=Shasta www.volcano.und.nodak.edu/vwdocs/volc_images/north_ america/california/shasta.html
www.wwwdwatcm.wr.usgs.gov/fs_landslide.html
www.water.wr.usgs.gov/shasta/introduction.html |
