Trossingen Formation

Trossingen Formation
Stratigraphic range: Norian-Rhaetian
~220–201 Ma
Excavation in 1912
TypeGeological formation
Unit ofKeuper
Sub-unitsFeuerletten, Grenzmergel & Knollenmergel Members
UnderliesExter Formation
OverliesLöwenstein Formation
ThicknessFranconia: 55–60 m (180–197 ft)
Southern Württemberg: 10 m (33 ft)
Lithology
PrimaryMarl, claystone
OtherMudstone, sandstone, conglomerate
Location
Coordinates48°48′N 9°12′E / 48.8°N 9.2°E / 48.8; 9.2
Approximate paleocoordinates31°54′N 10°24′E / 31.9°N 10.4°E / 31.9; 10.4
RegionCentral Europe
Country Germany
 Switzerland
ExtentSouthern half of Germany
Type section
Named forTrossingen
Named byBeutler
Year defined2005
Trossingen Formation is located in Germany
Trossingen Formation
Trossingen Formation
Trossingen Formation
Trossingen Formation
Trossingen Formation
Trossingen Formation (Germany)
Selected fauna of the Trossingen Formation

The Trossingen Formation, formerly the Knollenmergel, is a geological formation in Germany and Switzerland. It dates back to the late Norian-Rhaetian.[1]

  1. ^ Weishampel et al., 2004, pp.521–525