Geochemistry at DSDP Legs 36 and 71 Holes ...

• Main Authors: Robert, Christian, Maillot, Henri
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1983
• Subjects: Drilling/drill rig; Leg36; Leg71; Glomar Challenger; Deep Sea Drilling Project DSDP; Southern Ocean
• Online Access: https://dx.doi.org/10.1594/pangaea.814000; https://doi.pangaea.de/10.1594/PANGAEA.814000

For Middle Jurassic to Pleistocene times, clay mineralogical and geochemical data provide information on the evolution of continental and marine paleoenvironments. They are a source of information on marginal instability, on the continental and shallow marine environments related to the development of the Southern Ocean during the Middle and Late Jurassic, and on tectonic relaxation of the continental margins at the end of the Late Jurassic. They also provide evidence for the influences of the South Atlantic opening and the movement of the Falkland Plateau in a reduced marine environment until Aptian-Albian times, and the transition to an open marine environment during Albian time; the influences of the Albian-Turonian and Coniacian-Santonian Andean deformations in an open marine environment; the limited tectonic effects and strong influence of marine currents at the Cretaceous/Tertiary boundary; the influences of the global climatic cooling and inferred bottom water circulation during the late Eocene and ... : Supplement to: Robert, Christian; Maillot, Henri (1983): Paleoenvironmental significance of clay mineralogical and geochemical data, Southwest Atlantic, Deep Sea Drilling Project Legs 36 and 71. In: Ludwig, WJ; Krasheninnikov, VA; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 71, 317-343 ...