Spadlatscha-Kalk

Back to the list

Representation and status

Index
-
CMYK Color
-
RGB color
R: 185 G: 135 B: 125
Rank
lithostratigraphic Member
Validity
Unit is in Use
Status
local name (informal)
SCS note
-
SCS date
-
Comment
-

Nomenclature

German

Spadlatscha-Kalk

French
Calcaire du Piz Spadlatscha
Italian
Calcare del Piz Spadlatscha
English

Spadlatscha Limestone

Origin of the Name

Piz Spadlatscha (GR)

Historical Variants
Spadlatscha-Kalk (Furrer 1981, Eberli 1985), Spadlatscha Limestone (Furrer et al. 1985)
Nomenclatorial Remarks
-

Synonyms

Synonyms
Non-synonyms
Possible confusion

Description

Description

Regelmässige Wechsellagerung von dünn- bis mittelbankigen Kalken und gelbbraun anwitternden Mergeln in typischer Fleckenmergel-Fazies. Die Kalke und Mergel führen fein verteilten oder in Konkretionen und Ammonitensteinkernen angereicherten Pyrit, der oberflächlich meist in rostroten Limonit umgewandelt ist. Neben vielen Fressbauten (v.a. Chondrites sp.) treten häufig Cephalopoden auf: Ammoniten (v.a. Echioceraten), Nautiliden (Cenoceras sp.), Aulacoceratiden (Atractites sp.) und Belemniten. Im mikritischen oft etwas knolligen Kalk können zudem Foraminiferen, Calcisphaeren, Schwammnadeln, Ostracoden sowie vor allem an der Basis auftretende Gastropoden, Brachiopoden, Crinoiden, Echiniden beobachtet werden.

Geomorphology
-
Thickness
Max. 30 m (Eberli 1985)

Components

Lithological content
  • limestone
Mineral content
  • limonite
  • pyrite
Fossil content
  • ammonites
  • sponges
  • cephalopods
  • gastropods
  • trace fossils
  • crinoids
  • nautiloids
  • foraminifera
  • belemnites
  • brachiopods
  • echinoids

Hierarchy and succession

Superordinate unit
Subordinate units
Units at roof
    -
Units at floor
Lateral equivalents
Upper boundary
-
Lower boundary
Stidier-Hornsteinkalk
Stratigraphic discussion
-

Age

Age at top
earliest Pliensbachian
Note about top
-
Age at base
late Sinemurian
Note about base
-
Dating method
Ammoniten-Biostratigraphie (Eberli 1985)

Geography

Geographical extent
Piz Mitgel, ...
Type area
-
Type locality
-
Type profile
-
Reference profiles
-
Point of interest
-

Paleogeography and tectonic

Paleogeography
-
Kind of protolith
  • sedimentary
Conditions of formation
-
Sequence
-
Tectonic Unit (resp. main category)
Ela nappe
Metamorphism
-
Metamorphic facies
-
Note on metamorphism
-

References

Revision
Furrer Heinz (Ed.) (1985): Field workshop on Triassic and Jurassic sediments in the Eastern Alps of Switzerland. , Mitt. geol. Inst. ETH und Univ. Zürich (N.F.) 248, 81 S.

p.30: In the Ela nappe basal cherty limestones (Stidier Limestone, 10-20 m) are followed by a regular marl/limestone alternation (Spadlatscha Limestone, 30 m).
Important publications
  • Eberli Gregor Paul (1985): Die jurassischen Sedimente in den ostalpinen Decken Graubündens - Relikte eines passiven Kontinentalrandes. , Diss. ETH Zürich, 203 Seiten

Material and varia

Applications
-