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Description
Continuous outcrop of 30 m of brownish limestone that goes southwards into finely laminated white marls. The limestones are rocks formed by calcium and / or magnesium carbonate and are well cemented. The marbles are also made up of carbonate and, in addition, contain clays, so they undo more easily.

The limestones and marls are broken by subvertical planes (stratification) inclined towards the south. The limestone strata have variable powers with some 1 m thick bulk packages alternating with thinner ones (5 to 30 cm). The texture is nodulosa and locally they present brownish colors resulting from chemical transformations (calcite to dolomite).

The marbles break into plains, which, locally, have folds of decimals (50 cm).

History and interpretation
The limestones are sedimentary rocks most of which are formed from the precipitation of calcium carbonate, which is very abundant at the bottom of the sea. The limestone can also be formed from shells or skeletons, corals, etc. of many living beings that live in the sea and who have this composition.

The rocks of this outcrop have been dated from 420 to 360 million years ago by the presence of fossil remains of crinoids, orthoceratids and brachiopods, and by the type of fossils it is interpreted that they were deposited on marine platforms with some oxygenation.

Interest
The limestone has been used throughout the history of men as construction rocks due to their physical properties and resistance to weathering. Fine crushed grains are used to produce Portland cement. They are also used to make sculptures due to their fine grain size and homogeneity. The limestones have economic importance as oil reservoirs due to their large porosity.

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