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Under pressure; high-pressure metamorphism in the Alps

Lucie Tajcmanova, Paola Manzotti and Matteo Alvaro
Under pressure; high-pressure metamorphism in the Alps
Elements (February 2021) 17 (1): 17-22

Abstract

The mechanisms attending the burial of crustal material and its exhumation before and during the Alpine orogeny are controversial. New mechanical models propose local pressure perturbations deviating from lithostatic pressure as a possible mechanism for creating (ultra-)high-pressure rocks in the Alps. These models challenge the assumption that metamorphic pressure can be used as a measure of depth, in this case implying deep subduction of metamorphic rocks beneath the Alpine orogen. We summarize petro-logical, geochronological and structural data to assess two fundamentally distinct mechanisms of forming (ultra-)high-pressure rocks: deep subduction; or anomalous, non-lithostatic pressure variation. Furthermore, we explore mineral-inclusion barometry to assess the relationship between pressure and depth in metamorphic rocks.


ISSN: 1811-5209
Serial Title: Elements
Serial Volume: 17
Serial Issue: 1
Title: Under pressure; high-pressure metamorphism in the Alps
Affiliation: Heidelberg University, Institute of Earth Science, Heidelberg, Germany
Pages: 17-22
Published: 202102
Text Language: English
Publisher: Mineralogical Society of America and Mineralogical Society of Great Britain and Ireland and Mineralogical Association of Canada and Geochemical Society and Clay Minerals Society, International
References: 27
Accession Number: 2021-043791
Categories: Igneous and metamorphic petrologyStructural geology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Part of a special issue entitled Shedding light on the European Alps, edited by Eiler, John
Illustration Description: illus. incl. sketch map
N43°19'60" - N47°00'00", E05°30'00" - E10°00'00"
Secondary Affiliation: Stockholm University, SWE, SwedenUniversity of Pavia, ITA, Italy
Country of Publication: International
Secondary Affiliation: GeoRef, Copyright 2021, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 202114
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