Bostobe Formation
Stratigraphic Unit in Kazakhstan / From Wikipedia, the free encyclopedia
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The Bostobe Formation (Kazakh: Boztóbe svıtasy) is a geological formation in Qaraghandy & Qyzylorda, Kazakhastan whose strata date back to the Late Cretaceous (Santonian to early Campanian stages, approximately 85 Ma).
Quick Facts Type, Underlies ...
Bostobe Formation | |
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Stratigraphic range: Santonian-early Campanian ~85 Ma | |
Type | Geological formation |
Underlies | Akzhar Formation |
Overlies | Zhirkindek Formation |
Thickness | About 45 m (148 ft) |
Lithology | |
Primary | Sandstone |
Other | Claystone |
Location | |
Coordinates | 45.9°N 64.7°E / 45.9; 64.7 |
Approximate paleocoordinates | 38.7°N 58.0°E / 38.7; 58.0 |
Region | Qaraghandy & Qyzylorda |
Country | Kazakhstan |
Type section | |
Named for | Bostobe River |
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The sandstones and claystones of the formation were deposited in estuarine, fluvial-lacustrine and fluvial-deltaic environments.
Dinosaur remains are among the fossils that have been recovered from the formation.[1] The formation is about 45 metres (148 ft) thick and consists primarily of clay with interbeds of sand, representing an estuarine environment.[2]