Malor-Member
Representation and status
- Color CMYK
- (0%,8%,51%,4%)
- Color RGB
- R: 245 G: 225 B: 120
- Rank
- lithostratigraphic Member (Subformation)
- Validity
- Unit is in Use
- Status
- valid formal name
Nomenclature
- Deutsch
- Malor-Member
- Français
- Membre du Malor
- Italiano
- Membro del Malor
- English
- Malor Member
- Origin of the Name
- Historical Variants
-
Malorschichten (Frey 1965), Malor Member (Menkveld-Gfeller et al. 2016)
Description
- Description
-
Das Malor-Member besteht aus plattigen Mergeln mit eingeschalteten, feinen Sandstein- und Glimmersandsteinlagen. In den Sandsteinen können lokal Graduierung und Parallellamination beobachtet werden. Die Matrix ist kalkig, kann aber lokal auch silifiziert sein. In den obersten Lagen des Members treten Fragmente von karbonatisierten Andesiten auf.
- Thickness
- Wenige Zentimeter bis 15-25 m (Frey 1965), 30-40 m (Menkveld-Gfeller et al. 2016).
Hierarchy and sequence
- Units at roof
- Upper boundary
-
Ahornen-Member
- Lower boundary
-
Globigerinenschiefern = Stad-Formation
Age
- Age at top
-
- Priabonian
- Age at base
-
- Priabonian
- Dating Method
-
Biostratigraphie: Grossforaminiferen
Geography
- Geographical extent
- Zentral- und Ostschweiz (Klausenpass bis Linthtal).
- Type locality
-
-
Ahornenrus = Malorrus (GL)
Site particularities- typische Fazies
- Grat
- (2716150 / 1192700)
- Frey 1965, Menkveld-Gfeller et al. 2016
-
Ahornenrus = Malorrus (GL)
Palaenography and tectonic
-
- Paleogene of the Helvetics
- Tectonic unit (resp. main category)
- Kind of protolith
-
- sedimentary
- Metamorphism
- non metamorphic
References
- Definition
-
(2016) :
Lithostratigraphic units of the Helvetic Palaeogene: review, new definition, new classification. Swiss J. Geosc. 109/2, 171-199
p.188: The Malor Member was described by Frey (1965; ‘‘Malor-Schichten’’) at its type locality Ahornenrus [today Malorrus] (2716.150/1192.700).
Lithology: The Malor Member emanates from the Stad Formation by inserting fine-grained sandstone- and micaceous sandstone layers. Also, sandy limestone beds repeatedly occur in alternation with slaty marlstone.
Gradation and parallel lamination can be seen locally in the sandstones. The matrix is calcareous but can also be siliceous locally (oily gloss). In the highest layers, scattered fragments of carbonated andesite occur. The entire thickness is approx. 30–40 m. Overyling strata: Ahornen Member; underlying strata: Stad Formation. Biostratigraphy: Priabonian, Larger foraminifera. Current geographical extent: Central and Eastern Switzerland: Klausenpass to Linth valley. Tectonic units: Central and Eastern Switzerland: Lower Helvetic.