The Iapetus model: a plate tectonic concept for the Variscan belt of Europe

Neugebauer, Joachim

doi:10.1016/0040-1951(89)90089-9

Cited by 37 publications

(14 citation statements)

References 49 publications

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“…According to Lewandowski it had been the effect of the shortening during the Caledonian orogeny movements. But lacking the evidence of Caledonian folding and metamorphic processes in the Swi~tokrzyskie Mts, according to the present author, shows rather the accordance with the model presented lately by NEUGEBAUER (1989). Probably during Silurian times the Kielce Region was moved from 60 ~ to 10 ~ S along the strike-slip dextral faults.…”

Section: Discussionsupporting

confidence: 84%

The significance of the Variscan orogeny in the Świętokrzyskie Mountains (Mid Polish Uplands)

Stupnicka

1992

Geol Rundsch

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Section: Discussionsupporting

confidence: 84%

The significance of the Variscan orogeny in the Świętokrzyskie Mountains (Mid Polish Uplands)

Stupnicka

1992

Geol Rundsch

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“…The above scenario is more consistent with the palaeogeographic reconstructions of Erdtmann (1991), Neugebauer (1989) and Paris & Robardet (1990), than that of McKerrow & Cocks (1995). Moreover, during the Ordovician there was no barrier in the Bohemian Massif to prevent free faunal circulation between other parts of the present-day Europe (Baltica, Avalonia, Armorica, etc), except in the middle Ordovician when the transient widening of Tornquist Sea might prohibit the migration of brachiopods and trilobites to Baltica (Havliček, Vanék & Fatka, 1994).…”

Section: B Palaeogeographic Reconstructions and The Sudetessupporting

confidence: 83%

“…The Proto-Tethys Ocean (sensu Ziegler, 1986), separating southern Europe from northern Gondwanan Africa during the Devonian, is absent from their biogeographical reconstruction, although this may be inferred from palaeomagnetic data. According to Neugebauer (1989) only the Iapetus Ocean was involved in the formation of the Caledonian, Variscan and Alleghenian composite 'megaorogen'. In this model Avalonia never extended eastwards beyond northern Germany, while central and southeastern Europe always remained in a position proximal to Baltica.…”

Section: B Palaeogeographic Reconstructions and The Sudetesmentioning

confidence: 98%

The Sudetes as a Palaeozoic orogen in central Europe

Żelaźniewicz

1997

Geol. Mag.

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Two metasedimentary complexes are exposed in the Sudetes Mountains of Poland, Germany and the Czech Republic. Succession I comprises pelites and greywackes of Neoproterozoic–Cambrian age, deformed and metamorphosed prior to intrusion by S-type porphyritic granites at 515–480 Ma. Succession II comprises a sandstone–mudstone–chert sequence and turbidite sequence of Ordovician–early Carboniferous age accompanied by bimodal volcanogenic rocks. Both successions were intruded by late- to post-orogenic granitoid intrusions at 340–300 Ma. The sedimentary rocks of succession II show increasing maturity until mid–late Devonian times. Inversion of the basins, commencing in late Devonian–early Carboniferous times, was reflected in the emplacement of turbidites and olistostromes, concurrent with the uplift of a metamorphic core complex of succession I rocks. The original stratigraphic order of the successions was maintained, thus crustal imbrication was not significant. Instead, extensional faulting became important, followed by transpression on almost orthogonal fault zones, resulting in the presently observed juxtaposition of crustal blocks. The Palaeozoic sequences developed in mainly ensialic basins on Cadomian and older basement, parts of which became strongly reworked (2.6 to 0.54 Ga zircon inheritance ages) and incorporated into the Palaeozoic structures. The orogen developed either on the rifted margin of peri-Gondwana or on a rifted-away fragment of pre-Baltica. The Sudetic section of the Variscan Orogen is of broadly Alpine style, with significant basement involvement, but apparently without evidence for long-lived subduction of wide oceans or the accretion of numerous exotic terranes.

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“…The Iapetus model of Neugebauer (1989) is explicitly based on the fact that, during the Paleozoic, all the Variscan regions were interconnected and formed part of the North Gondwanan margin, which implies that no wide ocean existed within these areas and that the Variscan ocean must have been outside the Variscan regions. In this model (Fig.…”

Section: Models That Have Partly Taken Into Account These Constraintsmentioning

confidence: 99%

Alternative approach to the Variscan Belt in southwestern Europe: Preorogenic paleobiogeographical constraints

Robardet¹

2002

Variscan-Appalachian Dynamics: The Building of the Late Paleozoic Basement

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Most of the models proposed for the Variscan Belt of southwestern Europe have been based on structural, metamorphic, and magmatic data. An alternative approach is proposed here, based on sedimentological and faunal data that allows the deµnition and delimitation of different domains and evaluation of their relative positions and relations within the preorogenic paleogeography. Several previous models, which have not taken account of pre-Variscan paleogeographical data, can no longer be sustained. In particular, models that propose two distinct oceanic sutures within the French part of the belt should be abandoned. A model with a single Variscan ocean would accord much more satisfactorily with paleobiogeographical limitations. If it is accepted that, during pre-Variscan time, the Mid-North Armorican regions were not in their present positions, but formed an extension of the Central Iberian region, a hypothesis based on faunal and sedimentary evidence, then the single-ocean model proves more appropriate for the French section of the Variscan Belt.

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The Iapetus model: a plate tectonic concept for the Variscan belt of Europe

Cited by 37 publications

References 49 publications

The significance of the Variscan orogeny in the Świętokrzyskie Mountains (Mid Polish Uplands)

The significance of the Variscan orogeny in the Świętokrzyskie Mountains (Mid Polish Uplands)

The Sudetes as a Palaeozoic orogen in central Europe

Alternative approach to the Variscan Belt in southwestern Europe: Preorogenic paleobiogeographical constraints

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