Quseir Formation, Geological formation in Kharga Oasis, Egypt
The Quseir Formation is a geological layer in Kharga Oasis consisting of alternating bands of soft shale and hard sandstone, siltstone, and phosphorite. The combined thickness of these rock layers reaches about 250 meters and shows how sediments accumulated in an ancient landscape over time.
The formation dates to the Campanian stage of the Late Cretaceous when dinosaurs inhabited shallow seas and river deltas. These rock layers formed roughly 80 million years ago and document the geography of that ancient region.
Scientists from multiple countries conduct research at this formation to study the evolution and migration patterns of prehistoric species between Africa and Europe.
Access to this layer typically happens through organized expeditions with specialists in geology and paleontology. Visitors should expect hot, dry weather and bring proper protective clothing and plenty of water.
Remains of the sauropod Mansourasaurus were found here, a massive dinosaur that lived in Africa and provides fresh insights into how these animals spread across the continent. Such discoveries are rare because large dinosaurs typically do not preserve well in oasis sediments.
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