The age of movements along the insubric line West of Locarno (Northern Italy and southern Switzerland)

Details

Serval ID
serval:BIB_0B8755EEF959
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
The age of movements along the insubric line West of Locarno (Northern Italy and southern Switzerland)
Journal
Eclogae Geologicae Helvetiae
Author(s)
Zingg A., Hunziker J.C.
ISSN-L
0012-9402
Publication state
Published
Issued date
1990
Peer-reviewed
Oui
Volume
83
Pages
629-644
Language
english
Notes
7TH ANNUAL MEETING OF THE SWISS TECTONIC STUDIES GROUP, BASEL, SWITZERLAND, JAN 19-20, 1990
Abstract
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.
Create date
05/12/2012 21:20
Last modification date
20/08/2019 13:33
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