Quseir Formation | |
---|---|
Stratigraphic range: Campanian ~ | |
Type | Geological formation |
Sub-units | Mut & El Hindaw Members |
Underlies | Duwi Formation |
Overlies | Unconformity with Taref Formation |
Thickness | at least 250 metres (820 ft) |
Lithology | |
Primary | Shale |
Other | Sandstone, siltstone, phosphorite |
Location | |
Location | Al Wadi al Jadid, New Valley |
Coordinates | 25°36′N 29°06′E / 25.6°N 29.1°E |
Approximate paleocoordinates | 9°18′N 24°54′E / 9.3°N 24.9°E |
Region | Kharga Oasis |
Country | Egypt |
The Quseir Formation is a geological formation in the vicinity of the Kharga Oasis in Egypt.[1] It is Campanian In age.[2] The lithology largely consists of soft shale with hard bands of sandstone, siltstone and phosphorite.[3] The environment of deposition was nearshore to freshwater fluvio-lacustrine characterized by moist and aquatic habitats with a tropical warm-humid climate. It is conformably overlain by the marine late Campanian-Maastrichtian Duwi Formation, and unconformably overlies the Turonian Taref Formation. The sauropod dinosaurs Mansourasaurus and Igai are known from the formation,[4][5] as well as the proximal fibula of an indeterminate theropod.[6] Additionally the lungfish genera Lavocatodus and Protopterus,[7] the crocodyliform Wahasuchus[8] and the bothremydid turtle Khargachelys are also known.[9]