DESCUBIERTA LA REGIÓN VOLCÁNICA MÁS GRANDE DEL MUNDO EN LA en ANTÁRTICA
Por Anne Fornier
Por Anne Fornier
La colosal capa de hielo de la Antártida Occidental esconde lo que parece ser el la mayor región volcánica del planeta, según los resultados de un estudio realizado por investigadores de la Universidad de Edimburgo (Reino Unido) y recogido en la revista Geological Society.
Los expertos han descubierto hasta 91 volcanes bajo el hielo antártico, el mayor de los cuales es tan alto como el volcán Eiger de Suiza, y se eleva 3.970 metros sobre el nivel del mar.
Según los expertos, la zona tiene muchas similitudes con la cordillera volcánica del este de África, que actualmente ostenta el récord de la la mayor concentración de volcanes del mundo. Los científicos han estudiado a distancia la parte inferior de la capa de hielo para detectar picos ocultos de roca basáltica, como los de otros volcanes de la región cuyas puntas o picos presionan por encima del hielo.
Al analizar la forma del terreno bajo el hielo y comparar los resultados con los registros de satélites y bases de datos, así como con la información geológica de las evaluaciones aéreas, los geólogos encontraron 91 volcanes hasta ahora desconocidos, con alturas que varían de 100 a 3.850 metros.
«Encontramos 180 picos, pero descartamos 50 porque no coincidían con los otros datos», explica Robert Bingham, coautor del trabajo. Finalmente encontraron 138 picos bajo la capa de hielo de la Antártida Occidental, incluyendo 47 volcanes ya conocidos porque sus picos sobresalen a través del hielo, dejando la cifra de 91 recién descubiertos.
Una de las mayores provincias volcánicas del planeta recientemente identificada (agosto 2017) Van Wyk de Vries y col. 2017 / GSL
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