Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

The weak and superfast Cretan detachment, Greece: exhumation at subduction rates in extruding wedges

MPG-Autoren
/persons/resource/persons101211

Reischmann,  T.
Geochemistry, Max Planck Institute for Chemistry, Max Planck Society;

Externe Ressourcen
Es sind keine externen Ressourcen hinterlegt
Volltexte (beschränkter Zugriff)
Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte in PuRe verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Ring, U., & Reischmann, T. (2002). The weak and superfast Cretan detachment, Greece: exhumation at subduction rates in extruding wedges. Journal of the Geological Society, 159, 225-228.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0014-910C-6
Zusammenfassung
Low-angle normal faults (detachments) are only efficient agents for bringing rocks from 40->100 km depth back to the Earth's surface if they operate with extreme slip rates exceeding 20 km Ma(-1). Here we propose a slip rate of greater than or equal to 20-30 km Ma(-1) for the Cretan detachment in the Aegean, Greece. The Cretan detachment and the subjacent subduction thrust bounded an extruding wedge above the Miocene Hellenic subduction zone. During exhumation the high-pressure rocks in the wedge were not significantly deformed. Very low shear coupling at the bounding faults (which are therefore weak) is needed to prevent significant deformation in the extruding wedge. The proposed slip rate of greater than or equal to20-30 km Ma(-1) is similar to the subduction rate of 35-45 km Ma(-1) at the Hellenic subduction zone. We argue that extruding wedges can only slip at rates similar to subduction rates if there is very low shear coupling at the bounding faults, which may also explain the paradox of almost non-deformed but very rapidly exhumed rocks.