Temperature, pressure and age constraints on the very low-grade metamorphism of the Jurassic Telekesoldal Nappe (Inner Western Carpahians) in NE Hungary: a summary

• Autores: S. Kövér, L. Fodor, K. Judik, T. Németh, P. Árkai, K. Balogh, S. Kovács
• Localización: Trabajos de geología, ISSN 0474-9588, Nº 29, 2009, págs. 409-413
• Idioma: inglés
• Enlaces
  • Texto completo
• Resumen

  • Jurassic metasedimentary rocks of the Telekesoldal Nappe (Inner Western Carpathians) were sampled for metamorphic studies. The Telekesoldal Nappe represents a mélange-like accretionary complex consisting of black shales, sandstone turbidites and olisthostromes, deposited by gravity mass flows in a backarc (forearc?) basin. It was affected by ductile deformation and metamorphic alteration connected to the Middle Jurassic-Early Cretaceous subduction and obduction processes of the Neotethys Ocean. In the case of the 120-140 Ma very low-grade metamorphism – which is younger than the subduction-related blueschist facies metamorphism (Faryad and Henjes-Kunst, 1997) – the peak temperature was ca. 300-350 ºC, while the minimum pressure was ca. 2-2.5 kbar.