Abstract

La Perouse's chart of the Hawaiian Islands, drawn in 1786, was compared with Vancouver's chart of 1793 in an attempt to date the lava flow near La Perouse Bay, Maui. The prominent bulge formed by the flow is shown by Vancouver but not the accurately drawn chart of La Perouse, so that the date of eruption of the flow may be set at 1790 ± 4 years.

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