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218:, which formed during cooling of the lava. The volcanic cone containing the lava dome was later
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Mont
Gerbier de Jonc was formed 8 million years ago when a volcano erupted molten phonolite
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of phonolite rock in the crater of the volcano. The lava dome has
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246:(in French). Geopark - Parc Naturel Régional des Monts d'Ardèche
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173:is a mountain of volcanic origin located in the
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240:"Gerbier de Jonc et sources de la Loire"
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181:. It is made of a type of rock called
210:to flow far and it cooled to form a
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292:Mountains of Auvergne-RhĂ´ne-Alpes
287:Landforms of Auvergne-RhĂ´ne-Alpes
277:Volcanoes of Metropolitan France
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272:Mountains of the Massif Central
222:away, exposing the lava dome.
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199:, after the Ardèche Gorges.
43:1,551 m (5,089 ft)
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171:Mont Gerbier de Jonc
71:44.84444°N 4.22000°E
206:. The lava was too
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282:Miocene lava domes
33:Highest point
216:columnar jointing
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76:44.84444; 4.22000
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244:Volcans des sucs
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154:Mountain type
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248:. Retrieved
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136:Parent range
192:département
74: /
49:Coordinates
266:Categories
250:14 January
226:References
59:44°50′40″N
212:lava dome
183:phonolite
163:Phonolite
159:Lava dome
87:Geography
62:4°13′12″E
39:Elevation
208:viscous
197:Ardèche
148:Geology
119:Ardèche
220:eroded
179:France
123:France
187:Loire
252:2017
204:lava
195:of
177:in
268::
242:.
121:,
254:.
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