The Sturtian glaciation was a glaciation
, or perhaps multiple glaciations,
during the Cryogenian
Period when the Earth experienced repeated large-scale glaciations.
The duration of the Sturtian glaciation has been variously defined,with dates ranging from 717 to 643 Ma.
Stern ''et al.'' place the period at 715 to 680 Ma.
According to Eyles and Young, "Glaciogenic rocks figure prominently in the Neoproterozoic stratigraphy
of southeastern Australia and the northern Canadian Cordillera
. The Sturtian glaciogenic succession (c. 740 Ma
overlies rocks of the Burra Group." The Sturtian succession includes two major diamictite
sequences which represent glacial advance and retreat cycles. It is stratigraphically correlated with the Rapitan Group of North America.
The Sturtian is named after the Sturt Tillite, exposed in the Sturt River Gorge
, near Bellevue Heights
, South Australia
in northern Norway may have been deposited during this period.
*Adelaide Rift Complex