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Metadata Files

Data Publication

Centrifuge models investigating the influence of transverse pre-existing weaknesses on continental rifting

Corti, Giacomo | Sordi, Riccardo | Cucci, Federica

GFZ Data Services

(2018)

Descriptions

We present the results of centrifuge experiments investigating the role of preexisting crustal discontinuity on continental rifting. Specifically, we reproduce inherited weaknesses, orthogonal to the rift trend and parallel to the extension direction, and analyze their influence on the evolution and architecture of extensional deformation in the inner part and at the margins of continental rift valleys. Four different models, with variable width of the pre-existing weakness are illustrated. The models show a significant influence exerted by the pre-existing anisotropy on rifting: specifically, the inherited weakness inhibits the development of large boundary faults at rift margins, which are instead replaced by gentle monoclines dipping toward the rift axis. Axial faults are “captured” by the inherited anisotropy and rotate towards the pre-existing weakness, which therefore produces an unusual structural pattern also in the axial zone. This influence is dependent on the initial width of the pre-rift anisotropy and becomes negligible when its scaled width is 20 km or less.

Keywords


Originally assigned keywords
analogue modelling
continental rifting
pre-existing structures
normal faulting
analogue models of geologic processes
multi-scale laboratories
EPOS
analogue modelling results

Corresponding MSL vocabulary keywords
analogue modelling
rifting
normal fault

MSL enriched keywords
Apparatus
analogue modelling
tectonic plate boundary
divergent tectonic plate boundary
rifting
tectonic deformation structure
tectonic fault
normal fault
Earth's structure
Earth crust

MSL enriched sub domains i

analogue modelling of geologic processes

Source

https://dataservices.gfz-potsdam.de/panmetaworks/showshort.php?id=escidoc:2892903

Source publisher

GFZ Data Services


DOI

10.5880/fidgeo.2018.001


Creators

Corti, Giacomo

Consiglio Nazionale delle Ricerche, Istituto di Geoscienze e Georisorse, Florence, Italy

Sordi, Riccardo

Università degli Studi di Firenze, Dipartimento di Scienze della Terra, Florence, Italy

Cucci, Federica

Università degli Studi di Firenze, Dipartimento di Scienze della Terra, Florence, Italy


Contributors

Tectonics Modelling Laboratory (IGG-CNR, Italy)

HostingInstitution

IGG-CNR, Florence, Italy


References

10.1130/ges00863.1

10.1016/j.tecto.2011.06.010

10.3390/ma10060635

10.1016/j.tecto.2018.02.011


Citation

Corti, G., Sordi, R., & Cucci, F. (2018). Centrifuge models investigating the influence of transverse pre-existing weaknesses on continental rifting [Data set]. GFZ Data Services. https://doi.org/10.5880/FIDGEO.2018.001


Dates

Issued:

2018


Language

en


Rights

CC BY 4.0