Publicación Artículo científico (article).

Geophysical-petrological model for bidirectional mantle delamination of the adria microplate beneath the northern apennines and dinarides orogenic systems

Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/305208
Digital.CSIC. Repositorio Institucional del CSIC
  • Zhang, Wentao
  • Jimenez-Munt, Ivone
  • Torné, Montserrat
  • Vergés, Jaume
  • Bravo-Gutiérrez, Estefanía
  • Negredo, Ana M.
  • Carminati, Eugenio
  • García-Castellanos, Daniel
  • Fernández, Manel
This study presents a geophysical-geochemical integrated model of the thermochemical structure of the lithosphere and uppermost mantle along a transect from the Northern Tyrrhenian Sea to the Pannonian Basin, crossing the northern Apennines, the Adriatic Sea, and the Dinarides fold-thrust belt. The objectives are to image crustal thickness variations and characterize the different mantle domains. In addition, we evaluate the topographic response of opposed subductions along this transect and discuss their implications in the evolution of the region. Results show a more complex structure and slightly higher average crustal density of Adria compared to Tisza microplate. Below the Tyrrhenian Sea and Western Apennines, Moho lays at <25 km depth while along the Eastern Apennines it is as deep as 55 km. The modeled lithosphere-asthenosphere boundary (LAB) below the Tyrrhenian Sea and Pannonian Basin is flat lying at ∼75 and 90 km, respectively. Below the External Apennines and Dinarides the LAB deepens to 150 km, slightly shallowing toward the Adriatic foreland basin at 125 km depth. Our results are consistent with the presence of two mantle wedges, resulting from the rollback of the Ligurian-Tethys and Vardar-NeoTethys oceanic slabs followed by continental mantle delamination of the eastern and western distal margins of Adria. These two opposed slabs beneath the Apennines and Dinarides are modeled as two thermal sublithospheric anomalies of −200°C. Most of the elevation along the profile is under thermal isostasy and departures can be explained by regional isostasy with an elastic thickness between 10 and 20 km., This work is funded by GeoCAM (PGC2018-095154-B-I00) from the Spanish Government, the Generalitat de Catalunya Grant (AGAUR 2017 SGR 847) and ALORBE (PIE-CSIC-202030E10). WZ is supported by the China Scholarship Council (CSC-201904910470) and EBG by the Spanish Government Grant PRE2019-090524., Peer reviewed
 

DOI: http://hdl.handle.net/10261/305208
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/305208

HANDLE: http://hdl.handle.net/10261/305208
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/305208
 
Ver en: http://hdl.handle.net/10261/305208
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/305208

Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/305208
Artículo científico (article). 2023

GEOPHYSICAL-PETROLOGICAL MODEL FOR BIDIRECTIONAL MANTLE DELAMINATION OF THE ADRIA MICROPLATE BENEATH THE NORTHERN APENNINES AND DINARIDES OROGENIC SYSTEMS

Digital.CSIC. Repositorio Institucional del CSIC
  • Zhang, Wentao
  • Jimenez-Munt, Ivone
  • Torné, Montserrat
  • Vergés, Jaume
  • Bravo-Gutiérrez, Estefanía
  • Negredo, Ana M.
  • Carminati, Eugenio
  • García-Castellanos, Daniel
  • Fernández, Manel
This study presents a geophysical-geochemical integrated model of the thermochemical structure of the lithosphere and uppermost mantle along a transect from the Northern Tyrrhenian Sea to the Pannonian Basin, crossing the northern Apennines, the Adriatic Sea, and the Dinarides fold-thrust belt. The objectives are to image crustal thickness variations and characterize the different mantle domains. In addition, we evaluate the topographic response of opposed subductions along this transect and discuss their implications in the evolution of the region. Results show a more complex structure and slightly higher average crustal density of Adria compared to Tisza microplate. Below the Tyrrhenian Sea and Western Apennines, Moho lays at <25 km depth while along the Eastern Apennines it is as deep as 55 km. The modeled lithosphere-asthenosphere boundary (LAB) below the Tyrrhenian Sea and Pannonian Basin is flat lying at ∼75 and 90 km, respectively. Below the External Apennines and Dinarides the LAB deepens to 150 km, slightly shallowing toward the Adriatic foreland basin at 125 km depth. Our results are consistent with the presence of two mantle wedges, resulting from the rollback of the Ligurian-Tethys and Vardar-NeoTethys oceanic slabs followed by continental mantle delamination of the eastern and western distal margins of Adria. These two opposed slabs beneath the Apennines and Dinarides are modeled as two thermal sublithospheric anomalies of −200°C. Most of the elevation along the profile is under thermal isostasy and departures can be explained by regional isostasy with an elastic thickness between 10 and 20 km., This work is funded by GeoCAM (PGC2018-095154-B-I00) from the Spanish Government, the Generalitat de Catalunya Grant (AGAUR 2017 SGR 847) and ALORBE (PIE-CSIC-202030E10). WZ is supported by the China Scholarship Council (CSC-201904910470) and EBG by the Spanish Government Grant PRE2019-090524., Peer reviewed




Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/344840
. 2024

GEOPHYSICAL-PETROLOGICAL MODEL FOR BIDIRECTIONAL MANTLE DELAMINATION OF THE ADRIA MICROPLATE BENEATH THE APENNINES AND DINARIDES OROGENIC SYSTEMS

Digital.CSIC. Repositorio Institucional del CSIC
  • Jimenez-Munt, Ivone
  • Zhang, Wentao
  • Torné, Montserrat
  • Vergés, Jaume
  • Bravo-Gutiérrez, Estefanía
  • Negredo, Ana M.
  • Carminati, Eugenio
  • García-Castellanos, Daniel
In this study we present a geophysical-geochemical integrated model of the thermochemical structure of the lithosphere and uppermost mantle of the Adria and Tisza microplates along two transects running from the Northern Apennines to the Pannonian Basin, and from the Southern Apennines to the Balkanides, respectively. The objectives are to image crustal thickness variations and characterize the different mantle domains. In addition, we evaluate the topographic response of opposed subductions and discuss their implications in the evolution of the region. Results show a more complex structure and slightly higher average crustal density of Adria compared to Tisza microplate. Below the Tyrrhenian Sea and Western Apennines, Moho is much shallower (< 25 km) than along the Eastern Apennines, where it can reach depths of 50-55 km. The LAB depth shows significant lateral variations, from the shallow LAB of the Tyrrhenian Sea and Western Apennines (< 80 km) to the thick LAB underneath the eastern Apennines and Adriatic Sea (150 and 125 km, respectively). Our results are consistent with the presence of two mantle wedges, resulting from the rollback of the Ligurian-Tethys and Vardar-NeoTethys oceanic slabs followed by continental mantle delamination of the eastern and western distal margins of Adria. These two opposed slabs beneath the Apennines and Dinarides are modelled as two thermal sublithospheric anomalies of -200°C. A Tecton garnet lherzolite (Tc_2 of Griffin et al., 2009) for the whole lithospheric mantle allows fitting geoid height and long-wavelength Bouguer anomalies. Most of the elevation along the profile is under thermal isostasy and departures can be explained by regional isostasy with an elastic thickness between 10 and 20 km. This research has been funded by the GeoCAM Project (PGC2018-095154-B-I00) with the contribution of the China Scholarship Council., his research has been funded by the GeoCAM Project (PGC2018-095154-B-I00) with the contribution of the China Scholarship Council.




Docta Complutense
oai:docta.ucm.es:20.500.14352/73287
Artículo científico (article). 2022

GEOPHYSICAL-PETROLOGICAL MODEL FOR BIDIRECTIONAL MANTLE DELAMINATION OF THE ADRIA MICROPLATE BENEATH THE NORTHERN APENNINES AND DINARIDES OROGENIC SYSTEMS

Docta Complutense
  • Zhang, Wentao
  • Jiménez Munt, Ivone
  • Torne, Montserrat
  • Vergés, Jaume
  • Bravo Gutiérrez, Estefanía
  • Negredo Moreno, Ana María
  • Carminati, Eugenio
  • García Castellanos, Daniel
  • Fernàndez, Manel
This study presents a geophysical-geochemical integrated model of the thermochemical structure of the lithosphere and uppermost mantle along a transect from the Northern Tyrrhenian Sea to the Pannonian Basin, crossing the northern Apennines, the Adriatic Sea, and the Dinarides fold-thrust belt. The objectives are to image crustal thickness variations and characterize the different mantle domains. In addition, we evaluate the topographic response of opposed subductions along this transect and discuss their implications in the evolution of the region. Results show a more complex structure and slightly higher average crustal density of Adria compared to Tisza microplate. Below the Tyrrhenian Sea and Western Apennines, Moho lays at <25 km depth while along the Eastern Apennines it is as deep as 55 km. The modeled lithosphere-asthenosphere boundary (LAB) below the Tyrrhenian Sea and Pannonian Basin is flat lying at ∼75 and 90 km, respectively. Below the External Apennines and Dinarides the LAB deepens to 150 km, slightly shallowing toward the Adriatic foreland basin at 125 km depth. Our results are consistent with the presence of two mantle wedges, resulting from the rollback of the Ligurian-Tethys and Vardar-NeoTethys oceanic slabs followed by continental mantle delamination of the eastern and western distal margins of Adria. These two opposed slabs beneath the Apennines and Dinarides are modeled as two thermal sublithospheric anomalies of −200°C. Most of the elevation along the profile is under thermal isostasy and departures can be explained by regional isostasy with an elastic thickness between 10 and 20 km.




Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/280680
Dataset. 2022

GEOPHYSICAL-PETROLOGICAL MODEL FOR BIDIRECTIONAL MANTLE DELAMINATION OF THE ADRIA MICROPLATE BENEATH THE NORTHERN APENNINES AND DINARIDES OROGENIC SYSTEMS

Digital.CSIC. Repositorio Institucional del CSIC
  • Zhang, Wentao
  • Jimenez-Munt, Ivone
  • Torné, Montserrat
  • Vergés, Jaume
  • Bravo-Gutiérrez, Estefanía
  • Negredo, Ana M.
  • Carminati, Eugenio
  • García-Castellanos, Daniel
  • Fernández, Manel
The software used is LitMod2D_2.0 and can be downloaded from: https://doi.org/10.20350/digitalCSIC/9063 or GitHub https://github.com/ajay6763/LitMod2D_2.0_package_dist_users All methodological information can be found on the publication., GeoCAM (ref. PGC2018-095154-B-I00), - BestfitModel.zip: The files for best fitting model. It can be loaded by LitMod2D_2.0. - BestfitModel_No_mantle_anomalies.zip: The files for best fitting model without mantle anomalies. It can be loaded by LitMod2D_2.0. - Readme.txt., Peer reviewed





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