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Chapitre D'ouvrage Année : 1983

Metamorphic processes in sediments in contact with young oceanic crust—East Pacific Rise, leg 65

Résumé

Sites 482, 483, and 485 were drilled during Leg 65 on young oceanic crust south of the Tamayo Transform Fault. The Leg 65 drilling program was part of a multinational effort to study the East Pacific Rise (EPR) and complements sea bottom surveys conducted both in this area (Lewis, 1979; Cyamex Scientific Team and Pastouret, 1981) and farther south at 21 °N (Larson, 1971; Normark, 1976; Cyamex Scientific Team; Rise Project Group, 1980). These studies, which included deep-tow, Angus and submersible surveys, were recently complemented by sea-beam surveys conducted by the Jean Charcot on the Tamayo Fracture Zone and farther south along the EPR. They have led to a better understanding of the magmatic, tectonic, and sedimentary processes occurring on the East Pacific Rise between the Tamayo and Rivera fracture zones. The purpose of this chapter is to describe the metamorphic processes affecting Pliocene through Quaternary sediments found in contact, or inter layered, with basaltic units drilled during Leg 65 at the mouth of the Gulf of California.
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Dates et versions

hal-03514470 , version 1 (06-01-2022)

Identifiants

Citer

C. Rangin, A. Desprairies, J.C. Fontes, C. Jehanno, S. Vernhet. Metamorphic processes in sediments in contact with young oceanic crust—East Pacific Rise, leg 65. Deep Sea Drilling Project, 65, PartII - Section A - chap.12, U.S. Government Printing Office, pp.375-389, inPress, ⟨10.2973/dsdp.proc.65.112.1983⟩. ⟨hal-03514470⟩
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