Different metamorphic evolutions in the Alpine-Apenninic ophiolites (France-Italy-Switzerland-Austria)

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doi: 10.1016/0009-2541(89)90076-4
Authors:Desmons, Jacqueline
Author Affiliations:Primary:
Cent. Rech. Pétrogr. et Géochim., Vandoeuvre-lès-Nancy, France
Volume Title:Ophiolites and lithosphere of marginal seas
Volume Authors:Beccaluva, Luigi, editor
Source:Ophiolites and lithosphere of marginal seas, edited by Luigi Beccaluva. Chemical Geology, 77(3-4), p.229-250. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0009-2541
Publication Date:1989
Note:In English. 164 refs.; illus. incl. 4 tables, geol. sketch maps
Summary:The metamorphic evolution of the Alpine-Apennine ophiolites from Calabria to the Eastern Alps is reviewed, with special emphasis laid on the Western Alpine ophiolites. After the oceanic metamorphic phases, marked differences appeared in the metamorphic evolution: 1) The units that contain eclogite associations (Zermatt zone including the Voltri group, lower zone in the Tauern Window) are distinguished from the sediment-rich units, devoid of eclogites, most of which also contain ophiolite olistoliths and/or tectonic slices and interlayered ophiolitic rocks (e.g. Combin zone in the Western Alps). 2) The external units can be further separated into units showing initial late Cretaceous (Eo-Alpine) associations of either glaucophane-jadeite +- lawsonite, glaucophane-greenschist or prehnite-pumpellyite. 3) All units shared a more or less common Cainozoic (Meso- and Neo-Alpine) history of a grade roughly controlled by the distance to the Ticino thermal culmination. Both the development of very high-P conditions and the existence of domains of different evolutions are accounted for by the marginal sea setting now envisaged for the Alpine-Apenninic oceanic domains. [Author's abstract] [P.Br.]
Subjects:Alpine Orogeny; Bibliography; IGCP; Marginal seas; Metaigneous rocks; Metamorphic rocks; Metamorphism; Ophiolite; Orogeny; Petrology; Plate tectonics; Alps; Apennines; Austria; Central Europe; Europe; France; Italy; Southern Europe; Switzerland; Western Europe; Evolution
Abstract Numbers:90M/4778
Record ID:1990013654
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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