A quantitative consideration of several calderas for study of their formation
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Se han acumulado datos gravimétricos acerca de 22 calderas, la mayoría de ellas en Japón. Para algunas de dichas calderas se dispone también de datos sísmicos por explosión o mediante resultados de perforaciones. Sintetizando estos datos se deducen algunas configuraciones comunes a su estructura subsuperficial. Si bien todas las calderas japonesas son relativamente recientes, fluctuando su edad entre 6 000 y 100 000 años (B.P.), se intenta una discusión general acerca de ellas en conjunto: las deficiencias de masa obtenidas mediante anomalías gravimétricas sobre las calderas presentan una estrecha correlación con sus diámetros. Esta correlación es similar a la de los cráteres originados por meteoritos en Canadá, lo que implica la similitud de la estructura subsuperficial entre las calderas y dichos cráteres.
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