Caobang Geopark

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Fusulinid site in limestone

Fusulinid site in limestone

Fusulinid site in limestone of Na Quan formation (D1-D2nq) in Phi Hai commune, Quang Uyen district. Coordinates X=644934; Y=2513275; Z=503m asl. The fossils indicate a shallow marine environment under the stable tectonic setting.

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