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Orthogneisses and metapelites from a polyphase tectonic zone - mesostructural versus microstructural evidence: an example from the Czerniawa Zdrój section (Izera-Karkonosze Block, West Sudetes)

100%

Czapliński W.

Geologia Sudetica

1998

tom Vol. 31, nr 1

93-104

Within the gneisses of the northern part of the Izera-Karkonosze Block (West Sudetes), there are 4 belts of schistose rocks. The Stara Kamienica schist belt in the Czerniawa section consists of a sequence of orthogneisses deformed to various degree, occurring concordantly with metapelitic mica schists. Structural analysis of these rocks, including quartz c-axis analysis, allows four stages of deformation, common for both lithologies to be recognized. The quartz c-axis microfabrics are often incompatible with other elements of the structural record, which is interpreted as having resulted from multiple overprinting of older microfabrics by younger ones in a heterogeneous deformation regime. This heterogeneity concerns the geometry of the deformation as well as the mechanisms, which included subgrain-rotation recrystallization, grain-boundary migration, microfracturing and pressure-solution processes.

The origin and significance of cave-like features in the Karkonosze-Izera granite massif, Central Europe

63%

Migon P. , Szmytkie R.

tom 63

23-29

Orthogneisses and metapelites from a polyphase tectonic zone - mesostructural versus microstructural evidence: an example from the Czerniawa Zdroj section [Izera-Karkonosze Block, West Sudetes]

63%

Czaplinski W.

Geologia Sudetica

1998

tom 31

nr 1