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Geologica Carpathica, 1996, vol. 47, no. 2
U/Pb DATING OF ZIRCONS OF POSTOROGENIC ACID METAVOLCANICS AND METASUBVOLCANICS: A RECORD OF PERMIAN-TRIASSIC TAPHROGENY OF THE WEST-CARPATHIAN BASEMENT
Abstract
The Permian and/or Triassic ages (278–216 Ma) of subalkaline postorogenic acidic metavolcanics and metasubvolcanics, in the contact area between the Tatric and Veporic Zones, correspond to early Alpine taphrogeny of the West-Carpathian basement in the area of a large (Pohorela) normal detachment fault/shear zone. The dated complexes are mostly represented by Permian bimodal subalkaline volcanics, often surrounded by pyroclastics and accompanied by subvolcanic bodies indicating transtensional, narrow, temporary active furrows above deep-seated shear zones. They reflect a continental rifting phase (taphrogeny) of the southern parts of the central West-Carpathian basement belonging to a Paleotethys or Cimmerian passive margin of the Meliata (-Vardar-Hallstatt) oceanic basin.
Pages:
73 - 79
Published online:
0. 0. 1996