 |
 |
 |
|
|
|
| HAL : in2p3-00538531, version 1 |
| DOI : 10.1016/j.crte.2010.09.004 |
| Fiche détaillée |  Récupérer au format |
|
|
| Comptes Rendus Géosciences 342 (2010) 847-854 |
|
|
|
|
| The ultimate summit eruption of Puy de Dôme volcano (Chaine des Puys, French Massif Central) about 10,700 years ago |
|
|
| D. Miallier1P. Boivin2C. Deniel2A. Gourgaud2P. Lanos3M. Sforna2T. Pilleyre1 |
|
|
| (2010) |
|
|
|
| The Puy de Dôme volcano is a trachytic lava dome, about 11,000 y old. New pyroclastic layers originating from the volcano itself were discovered covering the summit and the flanks of the volcano. These pyroclastic layers do not fit with the previous interpretation, assuming a non-explosive dome-forming eruption. The tephra display pyroclastic surge features and exhibit fresh trachytic lapilli, basement lithics, allogeneous basaltic lava and clinker fragments requiring an open vent eruption. This ultimate eruption occurred after a period of rest, long enough for vegetation to develop on the volcano, as evidenced by carbonized plant fragments. Radiocarbon dating of some of these fragments gave an age of c.10,700 y also suggesting a significant rest duration. |
|
|
|
|
|
|
|
|
|
|
|
| 1 : | LPC-CLERMONT - Laboratoire de Physique Corpusculaire de Clermont-Ferrand |
|
|
| 2 : | LMV - Laboratoire Magmas et Volcans |
|
|
| 3 : | IRAMAT - Institut de Recherches sur les Archéomatériaux |
|
|
|
|
|
|
|
|
|
| Thème(s) | : | Physique/Physique/Géophysique Planète et Univers/Sciences de la Terre/Géophysique Sciences de l'environnement/Milieux et Changements globaux |
|
|
| Puy de Dôme – Cumulo-dôme – Trachyte – Cratère – France |
|
| in2p3-00538531, version 1 | |
| http://hal.in2p3.fr/in2p3-00538531 | |
| oai:hal.in2p3.fr:in2p3-00538531 | |
| Contributeur : Jeanine Pellet | |
| Soumis le : Mardi 23 Novembre 2010, 11:28:44 | |
| Dernière modification le : Mardi 23 Novembre 2010, 11:37:31 | |
