1887

Abstract

The vertical movements of the orogenic Ligurian Alps and their overlying Tertiary Piedmont Basin (NW Italy) are defined in this work by low-temperature thermochronometers, i.e. apatite (U-Th)/He and fission track. Thermochronological analyses are integrated by seismic and field geological data. Since earliest Oligocene, metamorphic Alpine rocks were exposed, eroded and covered by continental to marginal-marine deposits of the Tertiary Piedmont Basin. Then, the orogenic rocks and the sedimentary succession suffered a km-scale subsidence on the order of 4km before 26 Ma and began their exhumation thereafter: inversion took place in the southernmost part of the Tertiary Piedmont Basin and a regional northwards syn-depositional tilting began. Since Late Oligocene, the evolution of the investigated area is characterized by the coexistence of exhumation/uplift to the south and subsidence to the north. This couple of exhumation and subsidence migrated northwards through time.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.20147922
2008-06-09
2020-10-28
Loading full text...

Full text loading...

http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20147922
Loading
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error