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The Volcanic Island Clastic Apron Project (VICAP) entails a case history study of a coupled system, "oceanic island volcaniclastic apron." The source area, Gran Canaria, one of the best studied volcanic islands, has a 15-m.y.-long record of chemically distinct volcanic stages. Drilling through the submarine feather edge of the shield stage will allow dating of the beginning of shield volcano growth. We expect abundant datable mineral phases from the Miocene, Pliocene, and Quaternary compositionally evolved volcanic phases on Gran Canaria and neighboring younger Tenerife. These will allow high-resolution calibration of several dating methods and reconstruction of the submarine and subaerial growth and destruction of both islands in detail from the volcaniclastic sediments. The seamount/island evolution as deduced from drilling, together with the volcanic, temporal, and compositional evolution of the subaerial part of the islands, will allow quantification of mass-transfer rates in the system: decompressing mantle diapir island peripheral sedimentary basin. The Madeira Abyssal Plain (MAP) project is aimed at testing the hypothesis that ocean-basin sedimentation is controlled by sea-level changes which affect the stability of sediments on continental margins, including those on the flanks of volcanic islands. The products of masswasting events accumulate on the continental slope and on the abyssal plains, but the abyssal plain is the only place where a complete record can be obtained at one drill site. The combined VICAPMAP project focuses on the development of the Canary Basin in terms of the history of volcanic activity in the Canary hotspot, the detailed evolution of large volcanic oceanic islands, growth of peripheral sedimentary basins (volcanic aprons), and the filling of the distal Madeira Abyssal Plain.

Drilling into the Clastic Apron of Gran Canaria and into the Madeira Abyssal Plain