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.
If you remember my previous post, you will remember that I have left you with one question: what are the ‘dark balls’ in the granite?… Read More »What are the ‘dark balls’ in the granite of Sant’Andrea (Elba)?
I was a student the first time I visited the outcrops of Sant’Andrea in the far 2011. We must have looked really weird: a class… Read More »What are the white ‘stones’ nestled in the rocks of Sant’Andrea (Elba)?
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)
Elba is a paradise for beach lovers and summer sports, with its delicate coastal sceneries and scented footpaths hidden by the Mediterranean scrub. Certainly, except… Read More »The ancient desert of the island of Elba
When I was teaching with the course of Geology I in Pisa, I used to tell students: “the best way to learn how to recognize… Read More »Walking on a carpet of HUGE calcite crystals (Moriglion di Penna, Lucca, Italy)
The glacier of Neves, located on the Italian side of the Eastern Alps at the border with Austria, close to the Neves Lake (Neves-Stausee), is… Read More »When two different magmas meet (Neves, Sud Tirol)
In Tuscany, south of the city of Livorno, the panorama changes from boring (well, for us geologists for sure) plains with houses and towns to… Read More »The deep sea sandstones of Cala del Leone (Quercianella, Italy)
Sun, sea, exquisite food, and beautiful panorama are likely the first things that come to mind when visiting Manarola, in the scenic Cinque Terre National… Read More »The geology of Manarola (Cinque Terre, Italy)
The small town of Castiglioncello is one of many seaside localities in Tuscany that are popular for bathers in the summertime. The prominent cliffs, battered… Read More »The ancient ocean hidden on the shores of Castiglioncello, Italy