C. W. Poag, P. C. Graciansky

Geologic Evolution of Atlantic Continental Rises

• Gebundenes Buch

Produktbeschreibung

Continental rises comprise approximately 10% of sedimentary processes by which modern and sub the earth's surface and contain 20% of its total sedi modern submarine fans and related features are ment volume ( ~ 100 million cubic kilometers). How constructed. To provide a broader perspective of conti ever, their great depth (2,000-6,000 m) below the sea nental-rise evolution, we have organized this volume surface and distance from shore-based population cen into four parts: ters, have kept them relatively insulated from man's geological explorations. During the last 10-15 years, 1. Part I addresses prerift and synrift tectonic and however, driven by an ever-increasing thirst for knowl depositional aspects that account for the location, edge of our planet's nature and origin, by a rising geometry, and thickness of subsequent continental imperative to find new reserves of fossil fuels, and by a rises. demand to find safe haven for hazardous wastes, ma 2. Part II embraces early postrift aspects, such as rine scientists have intensified their surveys of this vast subsurface structure, stratigraphy, and accumula province. tion rates; relationships to continental slope and Voluminous geological and geophysical data from shelf deposition and to continental source terrains; multichannel and single-channel seismic-reflection and the relative effects of local and global reg profiles, high-resolution seafloor images (SEABEAM, ulating agents, such as tectonism, eustacy, and pa Sea MARC, GLORIA), and various gravity, piston, leoclimate. This accounts for most of the ~ 187 and rotary cores (Deep Sea Drilling Project, Ocean million-year evolution of Atlantic continental rises.

Produktdetails

• Verlag: Springer / Springer US / Springer, Berlin
• Artikelnr. des Verlages: 978-0-442-00498-9
• 1992.
• Seitenzahl: 378
• Erscheinungstermin: 31. August 1992
• Englisch
• Gewicht: 1470g
• ISBN-13: 9780442004989
• ISBN-10: 0442004982
• Artikelnr.: 24533226

Inhaltsangabe

Part I: Prerift and synrift evolution: Galicia continential margin: Constraints on formation of non-volcanic passive margins; Southwest Africa plate margin: Thermal history and geodynamical implications; Part II: Early postrift evolution: Antarctic continental margin: Geologic image of the Bransfield Trough, an incipient oceanic basin; Southwestern Africa continental rise: Structural and sedimentary evolution; Angola basin: Geohistory and construction of the continental rise; U.S. Middle Atlantic continental rise: Provenance, dispersal, and deposition of Jurassic to Quaternary sediments; Norweigan Continental margin: Structural and stratigraphical styles; Part III: Late postrift evolution: Southern Brazil basin: Sedimentary processses and features and implications for continental rise evolution; Southeastern New England continental rise: origin and history of slide complexes; Western Nova Scotia continental rise: Relative importance of mass wasting and deep boundary-current activity; Guinea and Ivory Coast-Ghana transform margins: Combined effects of synrift structure and postrift bottom currents on evolution and morphology; Northwest African continental rise: Effects of near-bottom processes inferred from high-resolution seismic data; Saharan continental rise: Facies distribution and sediment slides; Part IV: Synthesis; Index.