Skip to Main Content
Book Chapter

Late Jurassic-Early Cretaceous Central Atlantic Sea-Floor Spreading, Closure of Neo-Tethys, and Opening of Canada Basin

By
Published:
January 01, 1988

Abstract

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

You do not currently have access to this article.
Don't already have an account? Register

Figures & Tables

Contents

AAPG Memoir

Evolution of the Arctic-North Atlantic and the Western Tethys

Peter A. Ziegler
Peter A. Ziegler
Shell Internationale Petroleum Maatschappij B. V.
Search for other works by this author on:
American Association of Petroleum Geologists
Volume
43
ISBN electronic:
9781629811338
Publication date:
January 01, 1988

GeoRef

References

Related

A comprehensive resource of eBooks for researchers in the Earth Sciences

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal