Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6444607 | Journal of Structural Geology | 2016 | 56 Pages |
Abstract
The Cretaceous to Palaeogene Alpine exhumation of previously buried Variscan basements is recorded in the southern portion of the Western Carpathians in the Gemeric and Veporic units. The Meso-Cenozoic collisional processes resulted in basement exhumation of the Tatric Unit from Palaeogene to Neogene times. According to zircon and apatite fission track data, the Gemeric Unit, an uppermost thick-skinned thrust sheet, cooled from depth levels of â¼10 up to 2.5 km (temperature interval of â¼250-60 °C) about 88-64 Ma ago, after the collapse of overlying Meliata-TurÅa-Silica Mesozoic accretionary prism. The middle and lower thick-skinned thrust sheets, Veporic and Tatric units, cooled from the depths of â¼10 up to 2.5 km â¼110-40 Ma ago. The process was controlled by unroofing of footwall from beneath the Gemeric Unit. About 50-20 Ma ago, the internal zone of Tatric Unit gradually exhumed to depth of <2 km and some parts of the unit appeared at the surface level. However, the external zone of Tatric Unit was buried beneath the Eocene to Lower Miocene sedimentary successions and exhumed to the subsurface level at â¼21-8 Ma ago, as a result of oblique collision of the Western Carpathians with the European Platform.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geology
Authors
Silvia Králiková, Rastislav Vojtko, Jozef Hók, Bernhard Fügenschuh, Michal KováÄ,