Vous avez cherché: tephra (Anglais - Portugais)

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Anglais

tephra

Portugais

depósito piroclástico

Dernière mise à jour : 2014-11-15
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Anglais

such an established event provides a "tephra horizon".

Portugais

tais eventos estabelecidos proveem um "horizonte piroclástico".

Dernière mise à jour : 2016-03-03
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Anglais

the eruption released volcanic ash, which formed spheres of tephra known as accretionary lapilli due to the effect of electrostatic forces and moisture.

Portugais

a erupção lançou cinzas vulcânicas onde se formaram esferas de piroclastos conhecidos como accretionary lapilli devido aos efeitos de forças eletroestáticas e a umidade.

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Anglais

a pioneer in the use of tephra layers as marker horizons to establish chronology was sigurdur thorarinsson, who began by studying the layers he found in his native iceland.

Portugais

um pioneiro no uso de camadas piroclásticas como horizontes marcadores para estabelecer cronologia foi sigurdur thorarinsson, que iniciou por estudar as camadas que encontrou em sua terra natal, a islândia.

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Anglais

the people and buildings of pompeii were covered in up to twelve different layers of tephra, in total 25 meters deep, which rained down for about 6 hours.

Portugais

a população e construções de pompeia foram cobertos por doze diferentes camadas de piroclasto, que caiu durante seis horas e totalizou 25 metros de profundidade.

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Anglais

minor volcanic events may also leave their fingerprint in the geological record: hayes volcano is responsible for a series of six major tephra layers in the cook inlet region of alaska.

Portugais

eventos vulcânicos menores podem também deixar suas marcas no registro geológico: vulcão hayes é responsável por uma série de seis camadas piroclásticas principais na região do golfo de cook no alasca.

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Anglais

a major explosive eruption about 9,350 years ago reached a volcanic explosivity index of 6 and deposited tephra as far as central honshū over away, while producing pyroclastic flows on the island and decapitating its top to form a caldera.

Portugais

uma explosiva erupção explosiva a cerca de 9,350 anos atrás chegou a um Índice de explosividade vulcânica de 6, e depositou rochas tão longe quanto honshū central, acima de 800km de distância, e produzindo fluxos piroclásticos na ilha e decapitando seu topo para formar uma caldeira.

Dernière mise à jour : 2016-03-03
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Anglais

bárðarbunga was a little-known volcano in iceland due to its remote location and infrequent eruptions approximately once every 50 years, but recent studies have shown that many tephra layers originally thought to be from other volcanoes were ejected from bárðarbunga.

Portugais

pela sua localização remota, erupções pouco frequentes e por estar recoberto pelo glaciar, bárðarbunga era um vulcão pouco conhecido, mas estudos recentes demonstraram que camadas de piroclastos (em especial tefras) que eram atribuídos a outros vulcões foram ejectados do bárðarbunga.

Dernière mise à jour : 2016-03-03
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Anglais

== external links ==* usgs tephrochronology technique* tephra and tephrochronology, the university of edinburgh* antarctic research group* tephrochronology and high-precision analysis* tephrabase* international arctic workshop, 2004.

Portugais

== ligações externas ==* usgs tephrochronology technique* tephra and tephrochronology, the university of edinburgh* antarctic research group* tephrochronology and high-precision analysis* tephrabase* international arctic workshop, 2004.

Dernière mise à jour : 2016-03-03
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