Lassen VolcanicNational Park

By Jack T

Map

Special FeaturesSome special features are that some parts of Lassen have different temperaturesAll four types of volcanoes found in the entire world are represented in Lassen Volcanic National Park. Volcanoes found in the park include shield (Prospect Peak), plug dome (Lassen Peak), Cinder Cone (Cinder Cone), and Composite (Brokeoff Volcano) volcanoes.

GeographyLassen Volcanic’s Geography is rocky soil and dense forest.

This National Park is part of the ring of fire. The ring of fire is an area where large numbers of earthquakes and volcanic eruptions occur in the basin of the Pacific Ocean.

Lassen Peak is the worlds largest plug dome.

When did Lassen Volcanic become a national park? Why?

The work to create the national park started In 1906 when Theodore Roosevelt was president and finished in 1916

when Woodrow Wilson was president. It was the eruption

of Lassen peak that finally generated enough interest to make it a national park. The

area was made a National Park in 1916 because of its

significance as an active volcanic landscape.

How was it formed?

The park was formed by Lassen Peak when it erupted in 1915. This blast traveled many miles till it stopped and cooled. Then from the lava more Volcano’s took

form.

Types of Rocks

“1) hybrid black dacite lava containing (2)

undercooled andesitic inclusions, (3)

compositionally banded pumice with

dark andesite and light dacite bands, and (4)

unbanded light dacite.”

2004 382,2

74

2005 392,782

2006 377,3

612007 395,097

2008 388,7

41

2009 365,535

2010379,6

67

Visitors per Year

How is the land changing?

Lassen Peak began as a volcano vent on Mount Tehama’s northern flank starting about 600 years ago.

In May 1914 Lassen Peak burst into eruption. The climax of the episode took place in 1915.

There has been no eruptions since 1915 shortly before the park was created.

Environmental issues

Tourists visiting the park naturally erode some of the hiking trial; the park collects donations to help the hiking trials.

Sacramento Valley is polluting Lassen Volcanic from agriculture and manufacturing.

Toxic airborne including mercury deposited in the parks ecosystem at high levels, this is a potential wildlife and human health concern.

TechnologyWeb Rangers: Offers and opportunity to enjoy the park from home

BibliographyWikipedia

nps.gov

USGS.gov

Google Images