Tonschiefer-Formation

Representation and status

Color CMYK

(0%,0%,0%,100%)

Rank

lithostratigraphic unit

Validity

Unit is not in Use

Status

incorrect term (disused)

Nomenclature

Deutsch

Tonschiefer-Formation

Historical Variants

Tonschiefer-Formation (Florineth & Froitzheim 1994)

Hierarchy and sequence

Units at roof

• Tristel-Formation

Units at floor

• Kristallinbrekzie

Age

Age at top

• Hauterivian

Age at base

• Hauterivian

Palaenography and tectonic

Tectonic unit (resp. main category)

• Middle Penninic

Kind of protolith

• sedimentary

References

Important Publications

Florineth Duri, Froitzheim Nikolaus (1994) : Transition from continental to oceanic basement in the Tasna nappe (Engadine window, Graubünden, Switzerland): evidence for Early Cretaceous opening of the Valais ocean. Schweiz. min. petrogr. Mitt. 74/3, 437–448