At the Ansiola lighthouse we can observe a good example of a fault
<div class="ql-editor"><p class="ql-align-justify">Inverse fault in which the stratification plane.</p><p><br></p></div>">dip of the fault plane is at a low angle (generally less than 45<sup> o</sup>). It tends to refer to large-scale (regional) structures.</p><p><br></p></div>">thrust fault.
Thrust fault surface of the Ansiola lighthouse.
After this point, our attention is caught by the great lithological variety of the materials we observe, because in the Coll Roig area there appear yellowish-ochre limestones and siltstones from the Eocene (Tertiary), while the rest correspond to grey or whitish Lower Jurassic limestones.
In the area of the Ansiola lighthouse there are a considerable number of olistolites interspersed among the stratified limestones of the Middle-Upper Jurassic.
Geological interpretation of the cliffs in the vicinity of the Ansiola lighthouse.
Geological interpretation of the area between Coll Roig and Cap Vermell.
The Coll Roig area constitutes a Site of Geological Interest since it is one of the best outcrops of the Middle Eocene (Tertiary) of the island of Cabrera, been the archipelago’s oldest Cenozoic rocks.
