The Early Palaeozoic geography of Europe

The Early Palaeozoic geography of Europe
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DOI:
10.1144/jgs.157.1.1
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发表时间:
2000-01
影响因子:
2.7
通讯作者:
L. Cocks
L. Cocks
中科院分区:
地球科学2区
文献类型:
--
作者:
L. Cocks

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在早奥陶世,欧洲的动物群识别出三个主要大陆:热带的劳伦西亚(Iaptus洋闭合缝合线西北部);温带的波罗的海(泛欧缝合带总区以北);以及高纬度的冈瓦那(TESZ以南)。随着奥陶纪的发展,不同的地体在不同的时间从冈瓦那超大陆分离和漂移,即阿瓦洛尼亚(可能最初是靠近南美洲的冈瓦那的一部分)、伊比利亚-阿莫里察、佩鲁尼察(波西米亚)和各种阿尔卑斯山碎片。随着时间的推移,每个地体逐渐发展出不同的动物群。奥陶纪末期,阿瓦洛尼亚与波罗的海发生碰撞,得到动物群、构造和古地磁的证实,随后阿瓦洛尼亚-波罗的海与劳伦西亚在中志留世至早泥盆世发生碰撞,形成劳鲁西亚。伊比利亚-阿莫里察、佩鲁尼卡和阿尔卑斯山地体直到泥盆纪才加入欧洲拼贴画。地体边界的现代遗址与早古生代原始古地理边界几乎没有直接关系。
In the early Ordovician three main continents are recognized by faunas in Europe, Laurentia (northwest of the closed suture of the Iapetus Ocean), which was tropical; Baltica (north of the general area of the Trans‐European Suture Zone), which was temperate; and Gondwana (south of the TESZ), which was high latitude. As the Ordovician progressed, various terranes separated and drifted away from the Gondwana supercontinent at different times, namely Avalonia (which was probably originally part of Gondwana near South America), Iberia–Armorica, Perunica (Bohemia) and various Alpine fragments. Each terrane developed progressively different faunas as time went by. Avalonia collided with Baltica near the end of Ordovician, confirmed by faunas, tectonics and palaeomagnetism, and subsequently Avalonia–Baltica collided with Laurentia to form Laurussia from the mid‐Silurian to the early Devonian. The Ibero‐Armorica, Perunica and Alpine terranes did not join the European collage until the Devonian. The modern sites of the terrane boundaries bear little direct relationships to the original palaeogeographical boundaries in the Early Palaeozoic.