|
Centre for Volcanic Textures - with biennal Short course
next: Oct. 8th - 12th, 2009
The concept of the CVT:
Volcanic textures observable in outcrop, rock slab and thin sections are
the result of complex processes during magma ascent, fragmentation during
eruption, emplacement, cooling, diagenesis/hydrothermal overprint and
deformation. Analysis of volcanic textures provides a powerful tool for
the reconstruction of these processes both in young volcanic fields and in
ancient volcanic successions. The distinction between SiO2-rich lavas,
ignimbrites and subvolcanic intrusions, for example, is not trivial, and
it bears important implications for the geotectonic setting and basin
development. Apart from basic scientific projects, volcanic texture
analysis is significant in mineral deposit and hydrocarbon exploration,
and in assessment of volcanic hazards.
http://www.geo.tu-freiberg.de/dynamo/CVT.htm
|
|
VENTS = Polish-Czech-German project on Late Paleozoic
magmatism
Project outline
During the Late Carboniferous - Early Permian, the northern margin of the
Bohemian Massif was characterized by the formation of tectonically
controlled basins and by strong volcanic activity. Volcanic and
subvolcanic products of the predominantly calc-alkaline magmatism are
intercalated within intermontane basins, like the Intra-Sudetic Basin, the
North- Sudetic Basin, the Karkonosze-Piedmont Basin and the Döhlen Basin,
in southern Poland, northern Czech Republic and eastern Saxony,
respectively. In addition, important information on the magmatic evolution
of these systems can be achieved by investigation of subvolcanic bodies
cropping out in adjacent basement blocks like the Lusitanian Block in
eastern Saxony and the Karkonosze Block in Poland and the Czech Republic.
The VENTS program which will have a duration of 6 years involves project
leaders from three Polish universities ( Wrocław, Poznań, Warszawa), one
German university (Freiberg ) and the Saxonian Geological Survey, and the
Charles University and the Geological Survey of the Czech Republic .
www.geo.tu-freiberg.de/dynamo/VENTS.htm
|