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Visitar o Parque Nacional
Yellowstone. Link:

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Yellowstone National Park is an American national park located mostly in Wyoming, with small sections in Montana and Idaho. It was established by the U.S. Congress and signed into law by President Ulysses S. Grant on March 1, 1872. Yellowstone was the first national park in the U.S. and is also widely held to be the first national park in the world. The park is known for its wildlife and its many geothermal features, especially Old Faithful geyser, one of its most popular features. It has many types of ecosystem, but the subalpine forest is the most abundant. It is part of the South Central Rockies forests ecoregion.
Native Americans have lived in the Yellowstone region for at least 11,000 years. Aside from visits by mountain men during the early-to-mid-19th century, organized exploration did not begin until the late 1860s. Management and control of the park originally fell under the jurisdiction of the Secretary of the Interior, the first being Columbus Delano. However, the U.S. Army was subsequently commissioned to oversee management of Yellowstone for a 30-year period between 1886 and 1916.

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Yellowstone National Park - Google Arts & Culture

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Yellowstone National Park is an American national park located mostly in Wyoming, with small sections in Montana and Idaho. It was established by the U.S. Congress and signed into law by President Ulysses S. Grant on March 1, 1872. Yellowstone was the first national park in the U.S.

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As erupções vulcânicas dão-se devido ao aumento de pressão na câmara magmática. Provocando a fratura do teto da câmara o que conduz à descompressão do magma e dispersão do gás dissolvido. Estas condições favorecem a ascensão do magma através da chaminé.

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Chile vulcão Villarica em erupção.

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Chile: vulcão Villarica entra em erupção

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Google Maps - Visitar o vulcão dos Capelinhos - Açores.

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Google Maps - Visitar o vulcão dos Capelinhos - Açores.

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Google Maps - vulcão dos Capelinhos,  Link:

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Find local businesses, view maps and get driving directions in Google Maps.

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Na atividade vulcânica podem-se distinguir vários tipos de materiais expelidos:

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Existem três tipos de atividade vulcânica conforme:

a composição do magma,

a temperatura a que este se encontra e a quantidade de água existente.

o magma apresente diferentes graus de resistência– viscosidade.

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Atividade vulcânica no Planeta Terra.

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Navegar no Google Earth e visitar o Parque Nacional Yellowstone.

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São manifestações que são provocadas pelas alterações pela pressão e temperatura no magma em que provocam a libertação de água e gases sem no entanto se verificar expulsão de lava ou material piroclástico.
As manifestações secundárias do vulcanismo são: