The sap of Touron near Borée, is a volcano characterized by a blue phonolite presenting a formation in blocks of parallelepiped shapes. It is close to the Roches de Borée and the Gouleïou juice. Many screes are visible on the slopes.
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From 01 / 01 to 31 / 12.
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This maar is a superb example of phreatomagmatic volcanic activity. The operation is characterized by an intense explosive activity caused by the meeting of the hot magma during the ascent with the waters infiltrated from the surface.
Sub-lacustrine volcano, the panorama of the cross opens on the needles of viscous lava of the surroundings of Borée. The walk towards the Cirque des Boutières will allow you to find the shape of the ancient volcano which occupied the site.
These are typical examples of viscous lava needles that have moved into place almost in a solid state. Here no craters but massive shapes in the landscape. Interpretation table between the two rocks.
The Rocher des Pradoux corresponds geologically to an isolated phonolite rock bar (phonolite is a volcanic rock).
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