Plio-Pleistocene Sequence Stratigraphy and Tectonics of the Gibraltar Arc
Published:January 01, 1999
Joan F. Flinch, Peter R. Vail, 1999. "Plio-Pleistocene Sequence Stratigraphy and Tectonics of the Gibraltar Arc", Mesozoic and Cenozoic Sequence Stratigraphy of European Basins, Pierre-Charles de Graciansky, Jan Hardenbol, Thierry Jacquin, Peter R. Vail
Download citation file:
In this paper we attempt to show the relationship between geodynamics and sequence stratigraphy, emphasizing the effects of regional and local tectonics and their interaction with eustasy. These factors contributed to the final architecture of an area located in the frontal region of the Gibraltar Arc. The Plio-Pleistocene succession located in the Atlantic margin offshore of northern Morocco represents a well-developed Neogene progradational succession. Flexural loading in response to thrusting and extensional collapse of the Gibraltar Arc accretionary wedge, followed by widespread late orogenic uplift are the major mechanisms that controlled accomodation space along the margin. The main stratigraphic units have been subdivided into sequences and systems tracts and reveal nine Pleistocene fourth-order sequences interpreted as glacio-eustatic cycles.
The role of minor structures, such as diapirs, ramp anticlines and normal faults that were active during sedimentation affects stratal patterns but does not modify the presence and timing of sequence boundaries and maximum flooding surfaces. The final stratigraphic signature of the Pleistocene in the study area is the result of the complex interaction of regional tectonics, glacio-eustasy, local tectonics and sedimentary processes.
Figures & Tables
Mesozoic and Cenozoic Sequence Stratigraphy of European Basins
Mesozoic and Cenozoic Sequence Stratrigraphy of European Basins - This project was designed to build a documented chronostratigraphic and outcrop record of depositional sequences calibrated across European Basins. Data on standard stages, magnetostratigraphy, and geochronology integrated with high resolution biostratigraphy calibrate the stratigraphic position of depositional sequence boundaries. Higher order eustatic sequences show a significant increase in the number identified. A good portion of the European Mesozoic and Cenozoic succession is set in a sequence stratigraphic context with a better stratigraphic record of its bonding surfaces.