La Olla, Aliaga Geological Park
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La Olla, Aliaga Geological Park

by Elena Núñez-Guerrero, University of Salamanca, Salamanca, Spain

The picture shows an anticlinal vertical axis crease in lower Cretaceous materials whose deposits are the consequence of marine transgression which formed a shallow carbonated platform in the Iberian basin, south of the Ebro Massif, where communities of foraminifera, mollusks and echinoderms growed up.