The age of movements along the insubric line West of Locarno (Northern Italy and southern Switzerland)
Détails
ID Serval
serval:BIB_0B8755EEF959
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
The age of movements along the insubric line West of Locarno (Northern Italy and southern Switzerland)
Périodique
Eclogae Geologicae Helvetiae
ISSN-L
0012-9402
Statut éditorial
Publié
Date de publication
1990
Peer-reviewed
Oui
Volume
83
Pages
629-644
Langue
anglais
Notes
7TH ANNUAL MEETING OF THE SWISS TECTONIC STUDIES GROUP, BASEL, SWITZERLAND, JAN 19-20, 1990
Résumé
Permo-Mesozoic Canavese sediments are pinched in between the pre-Alpine
high-grade metamorphic Ivrea Zone and the Alpine metamorphosed Sesia
Zone along the Insubric Line W of Locarno. According to the ``illite
crystallinity'' these sediments were deformed under anchi- and
epizonal conditions. Synkinematically formed white mica in the
mylonitized Canavese sediments yields the following K-Ar age ranges:
60-76 Ma at the southwestern end, 28-43 Ma in the central part and 19-26
Ma in the northeastern part of the Insubric Line W of Locarno. The
youngest age group dates the main uplift and dextral strike-slip
movements of the Insubric Line, comprising mylonites in the NE and
cataclasites in the SW. This activity correlates with Late Oligocene to
Early Miocene rapid cooling and uplift of the Central Alps.
high-grade metamorphic Ivrea Zone and the Alpine metamorphosed Sesia
Zone along the Insubric Line W of Locarno. According to the ``illite
crystallinity'' these sediments were deformed under anchi- and
epizonal conditions. Synkinematically formed white mica in the
mylonitized Canavese sediments yields the following K-Ar age ranges:
60-76 Ma at the southwestern end, 28-43 Ma in the central part and 19-26
Ma in the northeastern part of the Insubric Line W of Locarno. The
youngest age group dates the main uplift and dextral strike-slip
movements of the Insubric Line, comprising mylonites in the NE and
cataclasites in the SW. This activity correlates with Late Oligocene to
Early Miocene rapid cooling and uplift of the Central Alps.
Création de la notice
05/12/2012 21:20
Dernière modification de la notice
20/08/2019 13:33