Rocks are not all equal. Before you call me a rock racist, what I mean is that they are very different in terms of chemistry and this causes them to behave very differently when they are altered by hydrothermal fluids. In the case that I am going to show, this means that some rocks are basically indifferent to chemical alterations, while in others the interaction with fluids produces beautiful crystals.
The Mediterranean Region is home of one of the most beautiful, yet mysterious, sedimentary rock in the world: the Rosso Ammonitico limestone. The beauty of… Read More »The Rosso Ammonitico limestone of Sassorosso (Garfagnana, Italy)
Today we venture in one of the most spectacular – yet lesser-known – places of Arizona: Walnut Canyon. Walnut canyon is a marvel of nature… Read More »How the geology of Walnut Canyon shaped pre-Colombian dwellings