Unraveling Multiple Thermotectonic Events Accommodated by Crustal‐Scale Faults in Northern Iberia, Spain: Insights From K‐Ar Dating of Clay Gouges

Large‐scale faults in the continental crust are significant features that control the evolution of sedimentary basins and intraplate mountain chains. Deciphering their evolution is a significant task because faults slip and reactivate in a variety of geological settings. In this work, clay gouges of...

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Bibliographic Details
Published in:Tectonics (Washington, D.C.) D.C.), 2019-10, Vol.38 (10), p.3629-3651
Main Authors: Aldega, L., Viola, G., Casas‐Sainz, A., Marcén, M., Román‐Berdiel, T., Lelij, R.
Format: Article
Language:English
Subjects:
Clay
Clay minerals
Continental crust
Cretaceous
Crystals
Evolution
Fault lines
Faults
Geological time
Iberian Plate
Illite
illite polytype
Illites
Jurassic
K‐Ar geochronology
Magma
Mesozoic
Orogeny
Paleogene
Permian
Rifting
Río Grío Fault
Sedimentary basins
Spain
Triassic
Vallès‐Penedès Fault
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Summary:Large‐scale faults in the continental crust are significant features that control the evolution of sedimentary basins and intraplate mountain chains. Deciphering their evolution is a significant task because faults slip and reactivate in a variety of geological settings. In this work, clay gouges of two major orogen‐scale, long‐lived faults in northern Iberia, the Río Grío and Vallès‐Penedès Faults, were investigated by X‐ray diffraction and K‐Ar isotopic analysis. Illite polytype determinations of 44 subfractions (from
ISSN:0278-7407
1944-9194
DOI:10.1029/2019TC005585