Tsagaantsav Formation
Early Cretaceous geologic formation in Mongolia / From Wikipedia, the free encyclopedia
The Tsagaantsav Formation, Tsagantsab Formation or Tsagan-Tsab Formation (Russian: Tsagaantsav Svita) is an Early Cretaceous (Hauterivian to Barremian) geologic formation in Mongolia.[1] Indeterminate sauropod and psittacosaurid remains have been recovered from the formation.[2] Remains of the pterosaur Noripterus, which were originally given their own genus, "Phobetor" have also been recovered from the formation.[3][4]
Quick Facts Type, Underlies ...
Tsagaantsav Formation | |
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Stratigraphic range: Hauterivian-Barremian 131–126 Ma | |
Type | Geological formation |
Underlies | Zuunbayan Formation, Shinekhudag Formation |
Overlies | Basement |
Lithology | |
Primary | Sandstone, siltstone |
Location | |
Coordinates | 44.9°N 110.4°E / 44.9; 110.4 |
Approximate paleocoordinates | 46.7°N 112.3°E / 46.7; 112.3 |
Region | Khovd, Uvs, Dornogovi & Övörkhangai Provinces |
Country | Mongolia |
Type section | |
Named for | Tsagan-Tsab well |
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Graham et al. 2001 reported radiometric dates of 131 and 126 Ma from the formation.[5]