Transcript Lassen Volcanic National Park

Lassen Volcanic National Park
By: Nolan Ray
U.S. Map of Lassen Volcanic and its park
features
Relief Map of Lassen Volcanic NP
When Lassen Became a National
Park
• Lassen became a National park on
August 9, 1916
•Roads and walkways were constructed
between 1925 and 1931
Why Lassen Volcanic Became a
National Park
•Mountains by the Lassen roads reached 8512
feet, the highest peak in the cascade
mountains.
•Workers who constructed roads on these
mountains felt Lassen was unique and special
since it broke a record of being the highest
cascade mountain.
Why Lassen Volcanic Became a National
Park (Continued)
•The workers told people who could make the
decision of it becoming a national park and
then the decision makers decided that it
should become a national park
How Lassen Volcanic Was Formed
• Lassen peak was once part of a much larger mountain
named mount Teham that started 600,000 years ago as
molten rock, known as magma.
• Magma moved upwards from the depths of the earth slowly,
over the years the magma formed a mountain estimated to
be about 11,000 feet high with a base over 11 miles wide.
• Eventually the great Volcano collapsed giving birth to an
even smaller mountains around its rims. Lassen peak is one
of the mountains that the Great Volcano gave birth to.
• In the middle of the 19th century when the first settlers came
over to California the area around the peak was dotted with
bubbling springs and vents producing steam.
What Rocks You Can Find At Lassen Volcanic
National Park
These are some rocks that are at my park and how you can
identify them.
Andesite- This piece of andesite rock is dark gray with lots of
tiny white feldspar crystals imbedded in with the matrix of the
rock
Banded Pumice- This rock was formed in the eruption of
Lassen Peak on may 22 1915. It is made up of layers of gray
and black lava.
Basalt- This lava rock is recognized by its dark gray color and
has very small mineral crystals within its insides.
What Rocks You Can Find At Lassen Volcanic
National Park(Continued)
• Dacite-This rock is light to medium gray in its texture and has
a very smooth texture. Typical of most Dacite lava rocks
there are many visible mineral crystals with in its insides.
• Rhyodiacite- Note the pink color and large mineral crystals
of white feldspar.
• Breccia- Breccia is a mixture composed of cinder ash, and
broken fragments imbedded in andesitic lava. This rock has a
reddish color and a chunky rough surface.
Special Landforms and Features Of Lassen
Volcanic National Park
• Lassen is one of the few places in the world where these
four volcanoes can be seen: Cinder Cone, Composite,
Shield, And Lava Dome
• Cinder Cone- The most simple type of volcano. They are
blobs and particles of congealed lava that is ejected from a
single vent.
• Composite- volcano are mostly steep-sided, symmetrical
cones of large dimension made of bombs, blocks, cinders,
volcanic ash, and lava flows.
Special Landforms and Features Of Lassen
Volcanic National Park
• Shield- Are formed from fluid lava that slowly builds up from
many lava flows
• Lava Dome-When the lava is blown into the air it breaks into
little pieces that solidify and fall as cinders around the vent
to form an oval or circular cone.
Special Landforms and Features Of Lassen
Volcanic National Park (Continued)
• They could rise up as much as 8,000 feet above their base.
• A shield volcano is almost entirely built by fluid lava flows.
• Lava dome volcanoes are formed by small, bulbous masses
of lava that are too flow at a great distance.
• A Lava Dome grows large by expansion from things that
move around in the inside.
How Technology Is Used To Maintain Lassen
Volcanic National Park
Recently at Lassen Volcanic National Park rangers have been
using body cameras to record cases and park activity. The
head of the rangers brought this idea all the way from Alaska.
He thought it would be a great idea because he felt that
better shots could be taken if the rangers were in control of
the camera. People think this is a great Idea. “It is like a third
witness” A park ranger said, with better audio and camera
quality than our regular security cameras.
Extra info About Lassen Volcanic Becoming a
National Park
• The Lassen area was a meeting area for the Astugewi ,
Yana, Yahi, the Maidu Native American Groups.
• After the Native Americans brought it to the explorer’s
attention they talked and word got out about this very
big mountain, they brought it to the attention of the
people a who could make it a national park.And they
did
Extra info About Lassen Volcanic Becoming
a National Park
• By 1900 some timber operations threatened many of the
forests in the Lassen area.
• On May 6, 1907 president Theodore Roosevelt declared
Lassen Peak and Cinder Cone as national monuments.
• In its early years, the park was pretty neglected by the
government and little money was set aside for its
administration
• President Roosevelt declared Lessen a national park on
August 9, 1916
Bibliography
•
"How Did the Mammoth Cave and Carlsbad Caverns Form?" How Did
the Mammoth Cave and Carlsbad Caverns Form? N.p., 2010. Web.
Deep Inside Mammoth Cave. Digital image. N.p., 2013. Web.
"Mammoth Cave." (book) National Parks. N.p.: n.p., n.d. 1-? Print.
"Lassen Volcanic National Park." HowStuffWorks. N.p., 08 Aug. 2006.
Web. 18 Jan. 2016
• "Lassen Crossroads Igneous Rock Garden - California - Rock and
Mineral Displays on Waymarking.com." Lassen Crossroads Igneous
Rock Garden - California - Rock and Mineral Displays on
Waymarking.com. N.p., n.d. Web. 20 Jan. 2016.
<http://www.waymarking.com/waymarks/WMJF7Z_Lassen_Crossroa
ds_Igneous_Rock_Garden_California>.