Eisgarner granite
The Eisgarner granite is a granite rock found in the northern Waldviertel and northern Mühlviertel .
Composition and genesis
The Eisgarner Granite is a coarse-grained two-mica granite and the youngest granite of the South Bohemian Granite Massif. Due to the presence of the minerals spinel , rutile , garnet and andalusite , it is assumed that the granite was formed by anatexis of sedimentary rocks. The Eisgarner granite usually penetrates the surrounding rock with sharp contacts. A slagging of the granite can only be determined in the vicinity of faults .
distribution
The main distribution area of the Eisgarner granite is in the northwestern Waldviertel between Neubistritz and extends over Gmünd to Karlstift ; Eisgarn is the type locality. Later, the Plöckenstein , the Teufelsschüssel , the Steinerne Meer and the Dreisesselberg were also identified as consisting of Eisgarner granite.
literature
- Alexander Köhler: The granite "Typus Eisgarn" from the northwestern Waldviertel , report of the meeting of the Academy of Sciences , math. – nat. Class, Department I, 140, Vienna 1931 pp. 847–861 PDF
Individual evidence
- ^ Rudolf Oberhauser (ed.): The geological structure of Austria , Federal Geological Institute, Springer Verlag, Vienna 1980, p. 134; accessed on June 16, 2017