16. Red Beach

Red Beach - Îles de Groix

16. Red Beach

Explorer?

Discover? Red Beach in Îles de Groix, France.

Red Beach - Îles de Groix
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Red Beach – Îles de Groix


A stunning beach and most interesting Hercynian belt, geological area (Bretagne & Normandy) that we fully enjoyed during our fieldwork.
(Long ago. Géologie, gastronomie, œnologie. Et menhirs, dolmen, cairn, cromlech…. le patrimoine néolithique de Carnac en Bretagne).

Red?

Mn and Mg-rich garnets: HP/HT (18 kbar/450 *C).
A garnet isograd, trending NNE–SSW, divides the island into two parts: with and without garnet to the east and west, respectively.
In the eastern part, P and T conditions are estimated as 16–18 kbar and 450 C from Mn and Mg-rich garnets.

Reference:
Kinematic records of subduction and exhumation in the Ile de Groix blueschists (Hercynian belt; Western France)
Melody Philippon*, Jean Pierre Brun, Fre ́de ́ric Gueydan Ge ́osciences Rennes UMR 6118 CNRS, Universite ́ de Rennes 1, 35042 Rennes Cedex, France;
Journal of Structural Geology 31 (2009) 1308–1321

Pls. visit if you have (make) the opportunity.
The ferry boats leave from the city of Lorient. Compagnie Océane, Gare maritime de Lorient (ferry terminal), 2, rue Gilles Gahinet – 56100 Lorient.

Sun bathing on HP/HT red garnets, dans la Douce France, mais oui, oui, certainement, bien sûr.
Bonne visite !

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