Geology of the Northwest African Continental Margin

ISBN-13: 9783642684111 / Angielski / Miękka / 2011 / 711 str.

U. V. Rad; K. Hinz; M. Sarnthein

Opis

The Northwest African and the conjugate Northeast American con- tinental margins provide excellent examples of mature passive continental margins which record in their thick sediment cover the birth and evolution of the Atlantic Ocean Basins during the past 200 million years. Due to a dense net of single- and multichannel seismic reflection lines, numerous Deep Sea Drill- ing Project (DSDP) sites and petroleum exploration wells, and the well-known onshore geology, the Northwest African margin is one of the bes"t-documen ted margins of the world. A particu- lar advantage of this margin is that its coastal basins are well exposed and accessible for detailed stratigraphic studies and onshore-offshore correlations, whereas the Mesozoic-Ceno- zoic marginal basins off eastern North America underlie only the present continental shelf and slope. During the past decade, the Northwest African margin was stu- died in great detail, particularly by the Woods Hole Oceano- graphic Institution, Lamont-Doherty Geological Observatory, Imperial College London, Shell Internationale Petroleum Maat- schappij (Den Haag), Kiel University, and the Bundesanstalt fiir Geowissenschaften und Rohstoffe (BGR) at Hannover. A num- ber of important synthesis papers summarized these results; e. g. , Summerhayes et al. , 1971; Dillon and Sougy, 1974; Seibold and Hinz, 1974; Uchupi et al. , 1976; Lehner and de Ruiter, 1977 (all quoted in the references of Seibold, this Vol. ).

Spis treści

1 The Northwest African Continental Margin — An Introduction.- Structure and Geodynamic Evolution of the Continental Margin.- 2 Preliminary Results from DSDP Leg 79 Seaward of the Mazagan Plateau off Central Morocco.- 3 The Continental Margin of Morocco: Seismic Sequences, Structural Elements and Geological Development.- 4 Magnetic Anomalies in the Magnetic Quiet Zone off Morocco.- 5 Atlas and Atlantic — Structural Relations.- 6 Stratigraphy, Facies and Tectonic Development of the On- and Offshore Aaiun-Tarfaya Basin — A Review.- 7 Cretaceous-Cenozoic History of the West Saharan Continental Margin (NW Africa): Development, Destruction and Gravitational Sedimentation.- 8 Deep Seismic Structure (Mauritania and Central Morocco).- 9 Stratigraphy and Structural Features of the Continental Margin Basin of Senegal and Mauritania.- 10 Bathymetry, Microphysiography and Reflectivity Characteristics of the West African Margin Between Sierra Leone and Mauritania.- Comparison of the Northwest African and Northeast American Margins.- 11 Mesozoic-Cenozoic Development of the Eastern North American and Northwest African Continental Margins: A Comparison.- Evolution of Volcanism.- 12 Volcanic and Chemical Evolution of the Canary Islands.- Cretaceous Stratigraphy, Sedimentation and Paleoenvironment.- 13 Cretaceous Foraminiferal and Nannoplankton Biostratigraphy and Paleoecology Along the West African Continental Margin.- 14 Cretaceous Radiolaria from the Northwest African Continental Margin.- 15 Cretaceous Stratigraphy, Environment, and Subsidence History at the Moroccan Continental Margin.- 16 Turonian Black Shales in the Moroccan Coastal Basins: First Upwelling in the Atlantic Ocean?.- 17 Cretaceous Coastline-Connected Mass Movements, Southern Morocco.- 18 Sedimentation in the Atlas Gulf I: Lower Cretaceous elastics.- 19 Sedimentation in the Atlas Gulf II: Mid-Cretaceous Events.- 20 Sedimentation in the Atlas Gulf III: Turonian Carbonates.- 21 Cretaceous Magnetic Stratigraphy of Southwest Morocc.- 22 Stratigraphy, Facies, and Significance of Late Mesozoic and Early Tertiary Sedimentary Rocks of Fuerteventura (Canary Islands) and Maio (Cape Verde Islands).- Cenozoic Stratigraphy, Sedimentation and Paleoenvironment.- 23 Oligocene and Post-Oligocene History of Sedimentation and Climate off Northwest Africa (DSDP Site 369).- 24 Atmospheric and Oceanic Circulation Patterns off Northwest Africa During the Past 25 Million Years.- 25 Late Quaternary Fluxes of Major Sediment Components to the Sea Floor at the Northwest African Continental Slope.- 26 Benthic Foraminifera: Depth Distribution and Redeposition.- Inorganic/Organic Geochemistry.- 27 Inorganic Geochemistry of Atlantic Ocean Sediments with Special Reference to Cretaceous Black Shales.- 28 Geochemistry and Petrography of Organic Matter in Northwest African Continental Margin Sediments: Quantity, Provenance, Depositional Environment and Temperature History.