The formation consists of grey limestones, dolomites and shales with at the upper part sandstones.

The formation dates to the Early Cretaceous period; Valanginian epoch and has a thickness of 425 metres (1,394 ft) in the valley of the Sogamoso River.

[1] The Rosablanca Formation is characterised by a sequence of grey limestones, dolomites and shales with a maximum thickness of 425 metres (1,394 ft) in the Sogamoso River valley.

[3] In 2020 remains of indeterminate pterosaurs were described from the formation, including pterodactyloids and non-Pteranodontian ornithocheiroids.

[7] The Rosablanca Formation is found, apart from its type locality on the Mesa de Los Santos, Santander, in Boyacá and the Middle Magdalena Basin.