Talk:Armorican terrane
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Merge with Armorican Massif?
[edit]- It has been suggested that these two articles cover similar ground (literally I suppose) and should perhaps be merged. I created this article as I felt that the focus of the Massif article was (necessarily) more parochial and included things like post-collisional granitic intrusion, which is irrelevant to the terrane as such. Rather than discuss this on various User talk pages, I'm starting a discussion here. Mikenorton (talk) 09:43, 8 October 2010 (UTC)
- Sorry, I did not see what both articles had links to each other. So, the Armorican Massif is a part of the Armorican terrane. The Iberian plate was joined to Armorica, as Corsica, Sardinia, the Balearic Islands, and the Briançonnais zone of the Penninic nappes of the Alps too. Quite a patchwork. The Armorican Massif does not have references. The categorization could be improved. Should we categorize the plates, shields, terranes and massifs that generated continental Europe and the Alpine orogeny? A main article that gives an overview with a main graphic would be heaven. --Chris.urs-o (talk) 10:30, 8 October 2010 (UTC)
- I'm a little less clear about the involvement of the Iberian plate in all this. Some sources include it (or perhaps part of it) within the Armorican terrane assemblage, whilst others do not. I should take another look at this. I'm also not sure what title you would give to an overview article, although I think that it would be useful. Mikenorton (talk) 10:46, 8 October 2010 (UTC)
- Sorry, I did not see what both articles had links to each other. So, the Armorican Massif is a part of the Armorican terrane. The Iberian plate was joined to Armorica, as Corsica, Sardinia, the Balearic Islands, and the Briançonnais zone of the Penninic nappes of the Alps too. Quite a patchwork. The Armorican Massif does not have references. The categorization could be improved. Should we categorize the plates, shields, terranes and massifs that generated continental Europe and the Alpine orogeny? A main article that gives an overview with a main graphic would be heaven. --Chris.urs-o (talk) 10:30, 8 October 2010 (UTC)
- Ziegler, Peter A (1999). "Evolution of the arctic-north atlantic and the western Tethys - a visual presentation of a series of paleogeographic-paleotectonic maps".
- Plate #6, Permo-Carboniferous, Kasimovian-Sakmarian, Stephanian-Autunian shows the Bay of Biscay Fracture Zone between the Armorican Massif and the Iberian plate.
- Stampfli, Gérard. "Alpine Tethys". Université de Lausanne.
- The Alpine Orogeny/ Geology of the Alps is really complicated. Maybe we need a template about the North margin of the Mediterranean Sea. Italy and the Balkans are really special. Germany is not easy too. --Chris.urs-o (talk) 15:05, 9 October 2010 (UTC)
- Hi Mike and Chris! Chris asked me my opinion, I presume about this merge proposal. Among the three entities to describe (paleocontinent, terrane, massif) I think there should be at least two articles: one about a hypothetical paleocontinent and one about the geologic province in NW France. It's possible that the hypothesis about a paleocontinent is now discredited - I'm not sure. Stampfli's work is mostly based on paleomagnetic data - data not detailed enough to distinguish between one big microcontinent and a string of smaller ones.
- As far as I know the Briançonnais terrane in the western Alps has never been seen as a part of Armorica. The Armorican Massif wasn't really affected in a major way by the Alpine Orogeny - its structures are mostly older (Cadomian, Variscan).
- Other parts of the hypothetical microcontinent Armorica were perhaps in the Bohemian Massif. I drew a similar map of that massif like the one I did for the Armorican Massif, but I didn't yet upload it to commons due to some uncertainties in the geology of the Krkonoše. Woodwalkertalk 10:09, 11 October 2010 (UTC)
Avalonia - Armorica - Cimmeria - China superterrane ?
[edit]Inexpertly, the ancient terranes of Avalonia, Armorica, Cimmeria, and south & north China, may have formed a long super-terrane, stretching along, and forming, the (then-)northern coast of Gondwana. Those terranes had been attached to Africa, Arabia, India, & Australia:
66.235.38.214 (talk) 12:28, 18 October 2012 (UTC)
External links modified
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