Boundaries of mantle–lithosphere domains in the Bohemian Massif as extinct exhumation channels for high-pressure rocks

0379337 - GFÚ 2013 RIV NL eng J - Journal Article
Babuška, Vladislav - Plomerová, Jaroslava
Boundaries of mantle–lithosphere domains in the Bohemian Massif as extinct exhumation channels for high-pressure rocks.
Gondwana Research. Roč. 23, č. 3 (2013), s. 973-987. ISSN 1342-937X. E-ISSN 1878-0571
R&D Projects: GA ČR GA205/07/1088; GA ČR GAP210/12/2381; GA AV ČR IAA300120709
Institutional research plan: CEZ:AV0Z30120515
Keywords : Bohemian Massif * mantle lithosphere domains * fossil olivine fabric * high pressure
Subject RIV: DC - Siesmology, Volcanology, Earth Structure
Impact factor: 8.122, year: 2013

Five domains (microplates) have been recognized by seismic anisotropy in themantle lithosphere of the Bohemian Massif. The mantle domains correspond to major crustal units and each of the domains bears a consistent fossil olivine fabric formed before their Variscan assembly. The present-day mantle fabric indicates that this process consisted of at least three oceanic subductions, each followed by an underthrusting of the continental lithosphere. The seismic anisotropy does not detect remnants of the oceanic subductions, but it can trace boundaries of the preserved continental domains subsequently underthrust along the paths of previous oceanic subductions. The most robust continent–continent collision was followed by westward underthrusting of the Brunovistulian mantle lithosphere, still detectable by seismic anisotropy more than 100 km beneath the Moldanubian mantle lithosphere.
Permanent Link: http://hdl.handle.net/11104/0210575