Geology Reference
In-Depth Information
Dockweil, Dockweiler, Kyllerkopf (lower lava), Gaussberg (near Waldsdorf), Mo-
senberg, Dohnberg, and Alter Vos (near Berlinger).
4.8.2 Tertiary and Quaternary Magmatism in Massif Central
France
Wilson and Downes (1991) discussed Tertiary and Quaternary volcanism in
Massif Central, France (Fig. 4.19 ). Primitive ma
c lavas of this region have SiO 2
contents ranging between 39 and 46 wt%. The other elemental abundance is as
follows: MgO > 7 wt%, Ni > 150 ppm and Cr > 250 ppm. Alkali basalts and
basanites predominate and are the parental magmas of two minor differentiation
series [alkali basalt-trachyandesite-trachyte-rhyolite and basanite-tephrite-phonolite
Neagene-Quaternary
Volcanics
0
300km
Major thrusts and
sutures
Major faults
Terrane blocks
RH...Rhenohercynian
S...Saxothuringian
M...Moldanubian
Bohemian
Massif
RH
Rhenish
Massif
Armorican
Massif
S
Pannonian Basin
M
ALPS
Limagne G
Massif Central
Fig. 4.19 Sketch Map of Western and Central European Volcanic Complexes (after Wilson and
Downes 1991)
 
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