Pleuger, J. ; Roller, S. ; Walter, J. M. ; Jansen, E. ; Froitzheim, N. (2007)
Structural evolution of the contact between two Penninic nappes (Zermatt-Saas zone and Combin zone, Western Alps) and implications for the exhumation mechanism and palaeogeography.
In: International Journal of Earth Sciences (Geologische Rundschau), 96 (2)
doi: 10.1007/s00531-006-0106-6
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The boundary zone between two Penninic nappes, the eclogite-facies to ultrahigh-pressure Zermatt-Saas zone in the footwall and the blueschist-facies Combin zone in the hanging wall, has been interpreted previously as a major normal fault reflecting synorogenic crustal extension. Quartz textures of mylonites from this fault were measured using neutron diffraction. Together with structural field observations, the data allow a refined reconstruction of the kinematic evolution of the Pennine nappes. The main results are: (1) the contact is not a normal fault but a major thrust towards northwest which was only later overprinted by southeast-directed normal faulting; (2) exhumation of the footwall rocks did not occur during crustal extension but during crustal shortening; (3) the Sesia-Dent Blanche nappe system originated from a continental fragment (Cervinia) in the Alpine Tethys ocean, and the Combin zone ophiolites from the ocean basin southeast of Cervinia; (4) out-of-sequence thrusting played a major role in the tectonic evolution of the Penninic nappes.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2007 |
| Autor(en): | Pleuger, J. ; Roller, S. ; Walter, J. M. ; Jansen, E. ; Froitzheim, N. |
| Art des Eintrags: | Bibliographie |
| Titel: | Structural evolution of the contact between two Penninic nappes (Zermatt-Saas zone and Combin zone, Western Alps) and implications for the exhumation mechanism and palaeogeography |
| Sprache: | Englisch |
| Publikationsjahr: | April 2007 |
| Verlag: | SpringerLink |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | International Journal of Earth Sciences (Geologische Rundschau) |
| Jahrgang/Volume einer Zeitschrift: | 96 |
| (Heft-)Nummer: | 2 |
| DOI: | 10.1007/s00531-006-0106-6 |
| Kurzbeschreibung (Abstract): | The boundary zone between two Penninic nappes, the eclogite-facies to ultrahigh-pressure Zermatt-Saas zone in the footwall and the blueschist-facies Combin zone in the hanging wall, has been interpreted previously as a major normal fault reflecting synorogenic crustal extension. Quartz textures of mylonites from this fault were measured using neutron diffraction. Together with structural field observations, the data allow a refined reconstruction of the kinematic evolution of the Pennine nappes. The main results are: (1) the contact is not a normal fault but a major thrust towards northwest which was only later overprinted by southeast-directed normal faulting; (2) exhumation of the footwall rocks did not occur during crustal extension but during crustal shortening; (3) the Sesia-Dent Blanche nappe system originated from a continental fragment (Cervinia) in the Alpine Tethys ocean, and the Combin zone ophiolites from the ocean basin southeast of Cervinia; (4) out-of-sequence thrusting played a major role in the tectonic evolution of the Penninic nappes. |
| Freie Schlagworte: | Alps Tectonics Exhumation Palaeogeography Quartz Texture |
| Zusätzliche Informationen: | Published online: 12 July 2006 An erratum to this article can be found at http://dx.doi.org/10.1007/s00531-007-0197-8 (Vol.96/6, pp. 1211-1212) |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften > Fachgebiet Angewandte Sedimentgeologie 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 28 Jan 2010 13:12 |
| Letzte Änderung: | 05 Mär 2013 09:30 |
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