Late Jurassic-Early Cretaceous Central Atlantic Sea-Floor Spreading, Closure of Neo-Tethys, and Opening of Canada Basin
Published:January 01, 1988
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1988. "Late Jurassic-Early Cretaceous Central Atlantic Sea-Floor Spreading, Closure of Neo-Tethys, and Opening of Canada Basin", Evolution of the Arctic-North Atlantic and the Western Tethys, Peter A. Ziegler
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The Mid-Jurassic development of a sea-floor spreading axis in the Central Atlantic marked the onset of a new kinematic regime in the Atlantic-Tethys domain, and with this a new chapter commenced in the break-up history of Pangea.
As discussed in Chapter 5, the initial phase of the Pangea break-up, spanning Permian to Mid-Jurassic times, was governed by the southward propagation of the Arctic-North Atlantic and the westward propagation of the Tethys rift systems. It peaked in the development of the Tethys and the Central Atlantic sea-floor spreading axes that linked-up via the Western Mediterranean transform fault system. In contrast, the post-Mid-Jurassic phases of the Atlantic-Tethys plate reorganization were governed by the evolution of the Central Atlantic sea-floor spreading axis and its stepwise northward propagation; this was paralleled by the stepwise opening of the South Atlantic Ocean. The evolution of the Central Atlantic sea-floor spreading axis is suggestive of its association with a major upwelling asthenospheric convective cell that had slowly developed during the Triassic and Early Jurassic.
During the Late Jurassic and Early Cretaceous, the progressive opening of the Central Atlantic caused a major sinistral translation between Africa and Laurasia (Olivet et al., 1984; Livermore and Smith, 1985). This was coupled with the transtensional opening of oceanic basins in the Western Mediterranean domain and a gradual closure of the Dinaric-Hellenic ocean, culminating during the earliest Cretaceous in the collision of the leading edge of the Italo-Dinarid promontory with the southern margin of Fermosarmatia (Plate 13). This collision marked the onset
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Evolution of the Arctic-North Atlantic and the Western Tethys
A broad, multi-disciplinary overview of the late Paleozoic to Recent geological evolution of much of northeastern North America, Greenland, all of Europe, and the northern parts of North Africa. This outstanding synthesis of regional geology retraces the evolution of sedimentary basins developed during the rifting phases that preceded the opening of North Atlantic ocean basins and highlights the scope of the associated intra-plate phenomena.This CD publication is the digital version of AAPG's landmark 1988 volume on the evolution of the North Atlantic Ocean. Ten chapters and 30 full-color plates. 200 pages. All articles presented in Adobe Acrobat PDF format.