«Marnes noires pyriteuses»
Back to Montsalvens sliceRepresentation and status
- Color CMYK
- (0%,0%,0%,100%)
- Color RGB
- R: 125 G: 125 B: 125
- Rank
- lithostratigraphic unit
- Validity
- Unit is in Use
- Status
- incorrect name (though informally used)
Nomenclature
- Deutsch
- «Pyritmergel»
- Français
- «Marnes noires pyriteuses»
- Italiano
- «Marnes noires pyriteuses»
- English
- «Marnes noires pyriteuses»
- Historical Variants
-
Calcaires noirs p.p. (Gilliéron 1873), dunkle Gaultmergel (Arn. Heim 1920), Dunkel Mergel p.p. (Heim 1920), Albienmergel (Büchi 1923), Albien (Gagnebin 1924, Verniory 1937), Marnes noires pyriteuses à bancs calcaires (Anatra 1986)
Description
- Thickness
- 5-20 m (Anatra et al. 1980).
Components
Fossil Content
- ammonites
- foraminifera
Ammonites goethitisées indéterminables.
Age
- Age at top
-
- Late Albian
- Age at base
-
- Late Aptian
- Note about base
-
Zone à Algeriana et Zone à Bejaouensis
- Dating Method
-
Foraminifères (Anatra 1986)
Geography
- Geographical extent
- Montsalvens, Pléiades, Faucigny.
Palaenography and tectonic
-
- Cretaceous of the Helvetics
- Tectonic unit (resp. main category)
- Kind of protolith
-
- sedimentary