The Centre of Volcanic Textures (CVT)
- Prof. Dr. Christoph Breitkreuz (cbreitgeo [dot] tu-freiberg [dot] de, TU Bergakademie Freiberg)
- Dr. Michael Magnus
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.
In a 75 m² room, the CVT helds an extended collection of volcanic and subvolcanic rocks (over 2000 rock slabs and thin sections), slides and printed material from many regions and periods of the Earth.
- Archives and cabinets
- Zeiss microscopes (Polarisation, and binocular with drawing mirrow, analog and digital photography)
- PC-based image analysing
- Slide projector, over head projector, beamer
The CVT can be used for volcanic texture analysis by MSc-, PhD-students and scientists from national and international Institutions and Companies. Users are invited to bring exciting volcanic samples from their projects for incorporation into the CVT.