unità dei Gneiss minuti
Back to Polyzyklisches Grundgebirge der Sesia-DeckeRepresentation and status
- Color CMYK
- (0%,0%,0%,100%)
- Color RGB
- R: 240 G: 200 B: 200
- Rank
- tectonically bounded lithostratigraphic unit
- Validity
- Unit is in Use
- Status
- informal term
Nomenclature
- Deutsch
- Gneiss-Minuti-Einheit
- Français
- unité des Gneiss minuti
- Italiano
- unità dei Gneiss minuti
- English
- Gneiss Minuti unit
- Origin of the Name
-
= gneiss à grain fin
- Historical Variants
-
Gneiss Minuti (Gastaldi 1871, Gastaldi 1874, Dal Piaz et al. 1972, Compagnoni et al. 1977), Gneiss albitiques (Comes 1975), "Gneiss Minuti" complex (Compagnoni et al. 1977), gneiss minuti (Dal Piaz et al. 1992a), External Sesia-Lanzo zone = gneiss complex (Conticelli et al. 2010)
Description
- Description
-
albite-white mica gneisses and schists ; Métagranitoïdes et granodiorites, associés à des roches rubanées d'origine volcano-sédimentaire probable (Comes 1975)
Hierarchy and sequence
- Subordinate units
Geography
- Geographical extent
- Val d'Aoste.
Palaenography and tectonic
- Paleogeography
-
Adriatic passive continental margin
:
southern continental margin / platform - Tectonic unit (resp. main category)
- Metamorphism
- polycyclic
- Metamorphic facies
-
- greenschist facies (epizone)
- eclogite facies
- Note on metamorphism
-
Im NW der Sesia Zone werden die Hochdruckparagenesen sukzessive von jüngeren
grünschieferfaziellen Paragenesen verdrängt, so daß in den externen Anteilen
("Gneiss Minuti") die Gesteine nur noch in vereinzelten Relikten die Einflüsse einer
Hochdruckmetamorphose belegen (Compagnoni et al. 1977; Richter 1983;
Venturini 1995).
References
- Definition
- 1871) : Studi geologici sulle Alpi Occidentali - Parte I. Memorie del Regio Comitato Geologico Italiano 1, 1-47 (