Talk:Parc naturel régional d'Armorique

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Cheers.—cyberbot II  Talk to my owner :Online 01:02, 27 January 2016 (UTC)

Age & height of Monts d'Arrée
There is an un-referenced statement that these were created as mountains 600 million years ago - and hence 'older than the Alps' - what does that mean? Some of the rocks which form these hills were not even deposited as sediments until 150 million years later in any case. I'll remove this line or tweak if I can find evidence that the Brioverian rocks that form a part of th Monts were indeed part of another mountain system way back. cheers Geopersona (talk) 07:06, 23 December 2017 (UTC)
 * There also seems to be some confusion around heights. The on-line version of the IGN topo maps (https://www.geoportail.gouv.fr/carte?c=-3.880278,48.416667&z=0.000316906&l=GEOLOGY.GEOLOGY$EXTERNAL:OGC:EXTERNALWMS(1)&permalink=yes) gives a spot height of 385m for a southerly top of Roc'h Tredudon and of 387 for a northern top. Roc'h Teevezel further southwest is given a height of 383m, the same value as Tuchenn Kador. Menez Mikel (Chapelle de St-Michel) is given 381m (though the highest (semi-)natural surface could still be higher if compromised by a structure. Geopersona (talk) 07:24, 23 December 2017 (UTC)

Geology
I've started a new section with this title and removed an existing (unsourced) line (The Monts d'Arrée hills are one of the oldest geological formations in Europe. They were created as mountains 600 million years ago, thus they are older than the Alps.) since it appeared to be based on a misunderstanding (see above also): the rocks may be late Proterozoic but that does not mean that the currently existing 'mountains' (hills actually) that they form are of that age. cheers Geopersona (talk) 14:00, 1 July 2018 (UTC)