About: Venado Formation
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The Venado Formation (Spanish: Formación Venado, Oir) is a geological formation of the , in the Eastern Ranges of the Colombian Andes, cropping out along the in northern Huila. The sequence of pyrite containing dark grey micaceous shales interbedded with siltstones and sandstones dates to the Ordovician period; Middle to Late Floian epoch, and has a maximum thickness of 670 metres (2,200 ft) in the type section.
