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The Limestone Island of Anegana That the shallower parts of the lagoon floor were somewhat planed down by low-level abrasion in the production of the present bank seems to be especially true in the eastern part of the bank, where the limestone island of Anegada now stands. This island, nine by two miles, 30 feet high, was described long ago by Schomburgk as consisting of coral limestone; his map shows 53 wrecks on its shore. It cannot be of Postglacial origin; the accumulation of its strata must antedate at least the later Glacial epochs, and its uplift--presumably in much larger area than that of the present island--probably antedated the last Glacial epoch, because the low-level abrasion that was operative during that epoch furnishes the best means of cutting away part of the uplifted limestone area and reducing it to the present island. The surrounding submarine bank is therefore to be regarded thereabouts as a bank of second generation. It has a width of two or three miles east of the island.

Caribbean Area The Virgin Islands The Bays of St. Thomas Norman Island and Island of Culebra The Cliffs of Virgin Islands The Great Banks Around the Virgin Islands The Limestone Island of Aregana Postglacial Coral Reefs on the Virgin Bank The Island of St. Croix Antigua and Barbuda Other Tilted Islands Geologoy of Antigua The Antigua Limestones Bays and Cliffs of Antigua Postglacial Features of Antigua and Its Bank St. Bartholomew, St. Martin, and Anguilla French Guiana Clipperton Island The Territory of Guracao Surinam Saba, Young Volcanic Island Redonda Marie Galante, Sombrero Montserrat Island Statia and St. Kitts, Nevis Adjustment of Bank Depths to Present Ocean Level More