|
1 School of Earth Sciences and Geography, Keele University, Staffs ST5 5BG, UK
2 British Geological Survey, Kingsley Dunham Centre, Keyworth, Notts NG12 5GG, UK
3 Laboratorium voor Palaontologie, Krijgslaan 281/S8, B 9000, Gent, Belgium
Multidisciplinary studies undertaken within the EU-funded PACE Network have permitted a new 3-D reassessment of the relationships between the principal crustal blocks abutting Baltica along the Trans-European Suture Zone (TESZ). The simplest model indicates that accretion was in three stages: end-Cambrian accretion of the Bruno-Silesian,
Inherited ages from both the Bruno-Silesian crustal block and Avalonia contain a 1.5 Ga ‘Rondonian’ component arguing for proximity to the Amazonian craton at the end of the Neoproterozoic: such a component is absent from Armorican terranes, which suggests that they have closer affinities with the West African craton.
Models showing the former locations of these terranes and the larger continents from which they rifted, or to which they became attached, must conform to the above constraints, as well as those provided by palaeomagnetic data. Hence, at the end of the Proterozoic and in the early Palaeozoic, these smaller terranes, some of which contain Neoproterozoic ophiolitic marginal basin and magmatic arc remnants, probably occurred within the end-Proterozoic supercontinent as part of a ‘Pacific-type’ margin, which became dismembered and relocated as the supercontinent fragmented.
ysogóry and Ma
opolska terranes; late Ordovician accretion of Avalonia, and early Carboniferous accretion of the Armorican Terrane Assemblage (ATA), which had coalesced during Late Devonian — Early Carboniferous time. All these accreted blocks contain similar Neoproterozoic basement indicating a peri-Gondwanan origin: Palaeozoic plume-influenced metabasite geochemistry in the Bohemian Massif in turn may explain their progressive separation from Gondwana before their accretion to Baltica, although separation of the Bruno-Silesian and related blocks from Baltica during the Cambrian is contentious.
This article has been cited by other articles:
 |
|
 |
|
  O. Fatka and M. Mergl The 'microcontinent' Perunica: status and story 15 years after conception Geological Society, London, Special Publications, 2009; 325: 65 - 101. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. Servais and M. Sintubin Avalonia, Armorica, Perunica: terranes, microcontinents, microplates or palaeobiogeographical provinces? Geological Society, London, Special Publications, 2009; 325: 103 - 115. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. S. Martinez, R. Arenas, J. Fernandez-Suarez, and T. E. Jeffries From Rodinia to Pangaea: ophiolites from NW Iberia as witness for a long-lived continental margin Geological Society, London, Special Publications, 2009; 327: 317 - 341. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 N.H. WOODCOCK, N.J. SOPER, and R.A. STRACHAN A Rheic cause for the Acadian deformation in Europe Journal of the Geological Society, 2007; 164: 1023 - 1036. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
H. Huneke Pelagic carbonate ooze reworked by bottom currents during Devonian approach of the continents Gondwana and Laurussia Geological Society, London, Special Publications, 2007; 276: 299 - 328. [Abstract] [PDF]
|
|
|
|
 |
|
 D. G. Gee and R. A. Stephenson The European lithosphere: an introduction Geological Society, London, Memoirs, 2006; 32: 1 - 9. [Abstract] [PDF]
|
|
|
|
|
|
L. R. M. Cocks and T. H. Torsvik European geography in a global context from the Vendian to the end of the Palaeozoic Geological Society, London, Memoirs, 2006; 32: 83 - 95. [Abstract] [PDF]
|
|
|
|
|
|
T. C. Pharaoh, J. A. Winchester, J. Verniers, A. Lassen, and A. Seghedi The Western Accretionary Margin of the East European Craton: an overview Geological Society, London, Memoirs, 2006; 32: 291 - 311. [Abstract] [PDF]
|
|
