Gravimetric studies of Taal Volcano,philippines |
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Authors: | I Yokoyama A Alcaraz O Peña |
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Institution: | 1. Hokkaido University, Japan 2. Commission on Voleanology, Philippines
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Abstract: | Taal Volcano is peculiar in its violent explosivity in spite of its low altitude. The surrounding topographies suggest that the origin of Taal Volcano is either a caldera or a graben structure. To confirm the caldera origin one must search for a vast quantity of caldera ejecta balancing with the depression. As a first step, a gravity survey was carried out on and around Taal Volcano, and high gravity anomalies were lound on Volcano Island. The distribution of the gravities may suggest a graben structure overlying a denser layer of igneous material. |
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