TY - JOUR
T1 - Postcollisional lithospheric evolution of the Southeast Carpathians
T2 - Comparison of geodynamical models and observations
AU - Göğüş, Oğuz H.
AU - Pysklywec, Russell N.
AU - Faccenna, Claudio
N1 - Publisher Copyright:
© 2016, American Geophysical Union. All Rights Reserved.
PY - 2016/5/1
Y1 - 2016/5/1
N2 - Seismic evidence and thermal and topographic transients have led to the interpretation of lithospheric removal beneath the Southeast Carpathians region. A series of numerical geodynamic experiments in the context of the tectonic evolution of the region are conducted to test the surface-crustal response to lithosphere delamination and slab break-off. The results show that a delamination-type removal (“plate-like” migrating instability) causes a characteristic pattern of surface uplift/subsidence and crustal extension/shortening to occur due to the lithospheric deformation and dynamic/thermal forcing of the sublithospheric mantle. These features migrate with the progressive removal of the underlying lithosphere. Model results for delamination are comparable with observables related to the geodynamic evolution of the Southeast Carpathians since 10 Ma: the mantle structure inferred by seismic tomography, migrating patterns of uplift (>1.5 km) and subsidence (>2 km) in the region, crustal thinning in the Carpathian hinterland and thickening at the Focsani depression, and regional extension in the Carpathian corner (e.g., opening of Brasov basin) correlating with volcanism (e.g., Harghita and Persani volcanics) in the last 3 Myr.
AB - Seismic evidence and thermal and topographic transients have led to the interpretation of lithospheric removal beneath the Southeast Carpathians region. A series of numerical geodynamic experiments in the context of the tectonic evolution of the region are conducted to test the surface-crustal response to lithosphere delamination and slab break-off. The results show that a delamination-type removal (“plate-like” migrating instability) causes a characteristic pattern of surface uplift/subsidence and crustal extension/shortening to occur due to the lithospheric deformation and dynamic/thermal forcing of the sublithospheric mantle. These features migrate with the progressive removal of the underlying lithosphere. Model results for delamination are comparable with observables related to the geodynamic evolution of the Southeast Carpathians since 10 Ma: the mantle structure inferred by seismic tomography, migrating patterns of uplift (>1.5 km) and subsidence (>2 km) in the region, crustal thinning in the Carpathian hinterland and thickening at the Focsani depression, and regional extension in the Carpathian corner (e.g., opening of Brasov basin) correlating with volcanism (e.g., Harghita and Persani volcanics) in the last 3 Myr.
KW - Southeast Carpathians
KW - delamination model
KW - topographic transients
UR - http://www.scopus.com/inward/record.url?scp=84971320918&partnerID=8YFLogxK
U2 - 10.1002/2015TC004096
DO - 10.1002/2015TC004096
M3 - Article
AN - SCOPUS:84971320918
SN - 0278-7407
VL - 35
SP - 1205
EP - 1224
JO - Tectonics
JF - Tectonics
IS - 5
ER -