Malm-Gruppe
Back to Dogger-GruppeRepresentation and status
- Color CMYK
- N/A
- Color RGB
- R: 241 G: 239 B: 237
- Rank
- lithostratigraphic Group
- Validity
- Unit is in Use
- Status
- informal term
Nomenclature
- Deutsch
- Malm-Gruppe
- Français
- Groupe du Malm
- Italiano
- Gruppo del Malm
- English
- Malm Group
- Origin of the Name
-
Malm was the name for calcareous loam, once used for making bricks and comes from the Old English word mealm, meaning 'soft'.
- Historical Variants
-
Malm = Oberer Jura (Oppel 1856), Jura supérieur (Rollier 1882), Jurassique supérieur = Malm (Blondel 1990), Malmkalke, calcaires du Malm
- Nomenclatorial Remarks
-
calcaire à Strombites (von Buch), calcaires jurassiques (Rengger et Hugi), calcaires jurassiques supérieurs (Mérian), Jura blanc (de Tribolet 1872)
Description
- Description
-
Im Westjura: dünnbankige, Kalke, Kalkoolithe und Dolomite (Keltische Fazies: sehr seichtmarin). Im Ostjura: massige Kalke und Mikrite (Schwäbische Fazies: offen marin).
- Geomorphology
- Hohe Wände.
- Thickness
- 250 - 350 m
Age
- Age at top
-
- Tithonian
- Age at base
-
- Oxfordian
Palaenography and tectonic
-
- Malm of the Jura Mountains
- Paleogeography
-
Northern Tethyan Carbonate Platform
:
Plateforme de Bourgogne, ... = Northern Tethyan Carbonate Platform (NTCP) - Tectonic unit (resp. main category)
-
-
Jura
:
Juragebirge
-
Jura
:
- Kind of protolith
-
- sedimentary
- Metamorphism
- non metamorphic
References
- Definition
- (1858) : Die Juraformation Englands, Frankreichs und des südwestl. Deutschlands. Jahreshefte des Vereins für Naturkunde in Württemberg. Jahrg. 12-14 (1856-1858)