Gravity field of Ascension Island,South Atlantic |
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| Authors: | Bibhu P. Dash John Milsom |
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| Affiliation: | Department of Geophysics, Imperial College of Science and Technology, London , SW7 2BP,UK |
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| Abstract: | A gravity survey of Ascension Island was carried out in 1964, a total of 210 stations being occupied. The results suggest that magma has reached the surface via three distinct conduits, the easternmost of which has been associated with extrusion of trachytic lavas. A regional decrease in gravity from west to east across the island is probably due to the proximity to the east of the crest of the Mid Atlantic Ridge, underlain by low density mantle. |
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