- Kilimanjaro - National Geographic Society
Also called a stratovolcano (a term for a very large volcano made of ash, lava and rock), Kilimanjaro is made up of three cones: Kibo, Mawenzi and Shira Kibo is the summit of the mountain and the tallest of the three volcanic formations
- Types of Volcanic Cones - Education
A volcanic cone is a triangle-shaped hill formed as material from volcanic eruptions piles up around the volcanic vent, or opening in Earth’s crust Most volcanic cones have one volcanic crater, or central depression, at the top They are probably the most familiar type of volcanic mountain Major Types of Volcanic Cones Composite cones Composite cones are some of the most easily
- Plate Tectonics and Volcanic Activity - Education
A volcano is a feature in Earth’s crust where molten rock is squeezed out onto the Earth’s surface This molten rock is called magma when it is beneath the surface and lava when it erupts, or flows out, from a volcano Along with lava, volcanoes also release gases, ash and solid rock Volcanoes come in many different shapes and sizes but are most commonly cone-shaped hills or mountains
- Volcanic Cones - Education
Alternating eruptions of volcanic ash and lava cause layers to form Over time these layers build up The result is a cone that has a gentler slope than a cinder cone but is steeper than a shield volcano Washington state’s Mt St Helens is an example of a composite cone volcano
- Volcanoes - Education
A volcano is an opening in a planet or moon’s crust through which molten rock, hot gases, and other materials erupt Volcanoes often form a hill or mountain as layers of rock and ash build up from repeated eruptions Volcanoes are classified as active, dormant, or extinct Active volcanoes have a recent history of eruptions; they are likely to erupt again Dormant volcanoes have not erupted
- Hot Spot Volcanism - Education
Over 16 5 million years, the hot spot has generated 15 to 20 massive eruptions that left large volcanic depressions called calderas The McDermitt Volcanic Field, located on the border of the U S states of Nevada and Oregon, is the hot spot’s oldest large feature It formed from an eruption roughly 16 1 million years ago
- Rift Valley - Education
These rift valleys are dotted by volcanoes: Erta Ale, Ethiopia; Mount Kenya, Kenya (an extinct stratovolcano); Ol Doinyo Lengai, Tanzania; Mount Kilimanjaro, Tanzania (a dormant stratovolcano); and Mount Nyiragongo, Democratic Republic of Congo The Gregory Rift stretches from the Red Sea and the Arabian Sea to as far south as Mount Kilimanjaro
- Most Recent Eruption of Mount Fuji - Education
A volcanic cone is the triangle-shaped hill formed as material from volcanic eruptions piles up around the volcanic vent, or opening in Earth’s crust Mount Fuji, Japan, is a classic example of a volcanic cone
- A Chain of Islands: Hawaiian Hot Spot - Education
There are many landforms around the Hawaiian Islands that formed from the same volcanic hot spot Scientists believe this hot spot has been expelling lava for roughly 70 million years Many of these landforms created by volcanoes are still submerged
- Plate Tectonics and the Ring of Fire - Education
An infamous eruption in 1883 destroyed the entire island, sending volcanic gas, volcanic ash, and rocks as high as 80 kilometers (50 miles) in the air A new island volcano, Anak Krakatau, has been forming with minor eruptions ever since Mount Fuji, Japan’s tallest and most famous mountain, is an active volcano in the Ring of Fire
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