Yellowstone
Geysers and supervolcano
What is a geyser?
• A geyser is a type of hot
spring that erupts
periodically, ejecting a
column of hot water and
steam into the air. The name
geyser comes from Geysir,
the name of an erupting
spring at Haukadalur,
Iceland;
• Geyser is geothermal spring,
caused by volcanic activity.
Where do geysers occur?
• Geysers occur only in volcanic
regions.
• There are several such regions on
Earth, The five largest geyser fields
in the world are:
• Yellowstone National Park,
Wyoming, United States
• Dolina Geiserov, Kamchatka, Russia
• El Tatio, Chile, South America
• Taupo Volcanic Zone,New Zealand
• Iceland, Europe
Other geysers can be found in:
California, Peru, Bolivia, Mexico,
Dominica, Azores, Kenya and
Japan.
There are 1000 geysers in the
world, more than 200 of them are in
Yellowstone.
• The most famous
one is OLD
FAITHFUL.
• The interval of
eruption normally
ranges between
68 and 93 minutes.
• It can erupt about
15 times a day.
Old Faithful
You can see it on the Old Faithful webcam !
Yellowstone geysers
Iceland
Chile, El Tatio geysers
Where is Yellowstone ?
• Yellowstone has so many
different things to see
and do it is amazing. The
park is huge, it is bigger
than the states of
Delaware and Rhode
Island combined. The
park covers 2,219,823
acres / 898,714 hectares,
3,472 square miles / 8,987
square km, miles north to
south - 63 / 102 km, miles
east to west - 54 / 87 km.
• Under the water
stream in Earth crust
there is a heat source
caused by volcano.
• In Yellowstone that is
the largest
supervolcano on
Earth with caldera that
has capacity of 2500
cubic km.
What is a super volcano?
What is a caldera?
• The largest and most explosive
volcanic eruptions eject tens to
hundreds of cubic kilometers of
magma onto the Earth's surface.
When such a large volume of
magma is removed from beneath a
volcano, the ground collapses into
the emptied space, to form a huge
depression called a caldera. Some
calderas are more than 25
kilometers in diameter and several
kilometers deep.
Crater lake caldera
The Yellowstone
Caldera, sometimes
known as the
Yellowstone
supervolcano,
measures 55 kilometers
by 72 kilometers .The
caldera was discovered
based on geological field
work conducted by Bob
Christiansen of the
United States Geological
Survey in the 1960s and
1970s.
Other supervolcanoes on Earth
• Calderas are among the most spectacular and
active volcanic features on Earth. Earthquakes,
ground cracks, uplift or subsidence of the ground,
and thermal activity such as hot springs, geysers,
and boiling mud pots are common at many
calderas. Yellowstone hot lakes on photos.
What else can you see in
Yellowstone?
• Mammoth
plate hot
springs
More geysers of course….
Thermal flows
Waterfalls
Yellowstone and Snake river
Beautiful landscape
Amazing wildlife
Bald eagle, ground hog and bison
Bighorn sheep and Wapiti
Coyote, pronghorn
and grizzly bear
The end