6533b839fe1ef96bd12a6420
RESEARCH PRODUCT
On the Volcanology of the West Eifel Maars
V. Lorenzsubject
Cinder coneLavaContinental crustMagmaGeochemistryPhreatomagmatic eruptionVolcanologyScoriaGeomorphologyGeologyMaardescription
The Quaternary alkali-basaltic volcanic field of the West Eifel is the classic maar region of the world. Related to the formation of the continental rift zone which extends through Central Europe, ultrabasic magmas rose from the upper mantle through the continental crust and fed 240 small volcanoes. Next to scoria cones with their lava flows, maars are most frequent and represent 25% of the volcanoes. Since 1820 and until 1970 their origin was mostly believed to be related to explosive exsolution of juvenile volatile phases. Since 1970, however, several authors have suggested that the West Eifel maars are phreatomagmatic in origin, i.e. rising magma contacted groundwater in near-surface levels, thus causing water vapor explosions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1987-01-01 |