A discontinuous coal seam found between the conglomerates tillite
of Tobra Formation and cross bedded sandstone of Warcha formation.
As regards the Upper Ordovician exposed in southern Normandy, based on conodonts and other fossils, the Vaux Limestone as well as limestone olistoliths in the overlying 'Tillite
de Feugueroles' ('Pelites a fragments') were dated as Ashgillian (Weyant et al.
(2005): Archaeocyathan limestone blocks of likely Antarctic origin in Gondwanan tillite
from the Falkland Islands.
Complete the experience with a quiet low-tide walk around the fossil bluff that has an ancient glacial deposit, Wynyard Tillite
, next to it.
Densities were determined for the three main ore types: bedded magnetite, tillite
, and interbedded magnetite.
Age of the Squantutu "tillite
", Boston Basin, Massachusetts: U-Pb zircon constaints on terminal Neoproterozoic glaciations.
The Earth's oldest glacial rocks (mid-Proterozoic) were reported from Gowganda in northern Ontario (Coleman, 1907) and in 1906 Albrecht Penck introduced the term tillite
for ancient lithified tills.
Ichnofossils and tillite
layers, indicative of the Vendian, occur in the lower part of the unit (Foyn & Glaessner 1979).