Relative motions of Africa, Iberia and Europe during Alpine orogeny

Rosenbaum, G, Lister, GS and Duboz, C (2002) Relative motions of Africa, Iberia and Europe during Alpine orogeny. Tectonophysics, 359 1-2: 117-129. doi:10.1016/S0040-1951(02)00442-0

Author Rosenbaum, G
Lister, GS
Duboz, C
Title Relative motions of Africa, Iberia and Europe during Alpine orogeny
Journal name Tectonophysics   Check publisher's open access policy
ISSN 0040-1951
Publication date 2002-01-01
Year available 2002
Sub-type Article (original research)
DOI 10.1016/S0040-1951(02)00442-0
Open Access Status Not yet assessed
Volume 359
Issue 1-2
Start page 117
End page 129
Total pages 13
Place of publication Amsterdam
Publisher Elsevier Science Bv
Language eng
Abstract A revised kinematic model for the motions of Africa and Iberia relative to Europe since the Middle Jurassic is presented in order to provide boundary conditions for Alpine-Mediterranean reconstructions. These motions were calculated using up-to-date kinematic data predominantly based on magnetic isochrons in the Atlantic Ocean and published by various authors during the last 15 years. It is shown that convergence of Africa with respect to Europe commenced during the Cretaceous Normal Superchron (CNS), between chrons MO and 34 (120-83 Ma). This motion was subjected to fluctuations in convergence rates characterised by two periods of relatively rapid convergence (during Late Cretaceous and Eocene-Oligocene times) that alternated with periods of slower convergence (during the Paleocene and since the Early Miocene). Distinct changes in plate kinematics are recognised in the motion of Iberia with respect to Europe, indicated by: (1) a Late Jurassic-Early Cretaceous left-lateral strike-slip motion; (2) Late Cretaceous convergence; (3) Paleocene quiescence; (4) a short period of right-lateral strike-slip motion; and (5) final Eocene-Oligocene convergence. Based on these results, it is speculated that a collisional episode in the Alpine orogeny at ca. 65 Ma resulted in a dramatic decrease in the relative plate motions and that a slower motion since the Early Miocene promoted extension in the Mediterranean back-arc basins. (C) 2002 Elsevier Science B.V. All rights reserved.
Keyword Geochemistry & Geophysics
Alpine Orogen
Plate Kinematics
Dora-maira Massif
Western Alps
Pressure Metamorphism
Continental Collision
Tectonic Evolution
Mylonite Zones
Tethys Belt
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Physical Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 349 times in Thomson Reuters Web of Science Article | Citations
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Created: Mon, 13 Aug 2007, 23:16:04 EST