Abstract

The DSDP data (Legs 6, 31, 59, and 60) on the composition and structure of the layers covering the Philippine Sea floor along 18°N, and the correlation of hiatuses and unconformities in the sediments of the sea floor and near-by islands, suggest the existence of six sedimentary sequences, each representing 2 to 5 formations. These data allowed us to trace the lateral rows or arrangements of structural elements with carbonaceous, volcaniclastic and clayey covers. Sedimentary sequences different in age but similar in the composition and structure, their present-day morphology and velocity parameters are also described.

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