Garraf, a mount of limestone

Eagles, turtles, shellfish and people form their structures due to calcium, a very strong element that is also part of the rocks of the Garraf. “Quèquicom” walks this park to explain calcium cycling.
The Garraf is a spectacular rough and rocky mount, located just 30 km from the city of Barcelona. It consists of limestone, that is, a rock with a high content of calcium. Interestingly, the inside is completely bored like a Swiss cheese for hundreds of underground cavities. How have they originated? To answer this question, the biologist Pere Renom practice speleology in the cave Emili Sabate, and delves into more than 20 meters deep. Combined with other elements the calcium presents constructive characteristics. Is part of rocks, skeletons, shells, teeth… and the man also use it as cementing material to make lime, mortar, cement or concrete. From the studio, the presenter Toni Mestres, shows how the carbide lamp is obtained precisely from calcium.