Get yours when you book a hotel on TripAdvisor and review your stay! Cabo San Lucas Tourism: Best of Cabo San Lucas. Cabo San Lucas, Mexico. As a well-known destination for both spring breakers and A-list travelers in need of a getaway, Cabo San Lucas has definite vacation cred. The beaches here range in temperament, from the serene waters of the Sea of Cortez and Playa del Amor to the kickinâ waves of Zippers, a surfing paradise.
Diatoms. The cell walls of diatoms are made of silica formed into their characteristic pillbox shape. Diatoms are composed of two valves or frustules, one on top of the other, within which the living matter of the diatom is found.
Specimens of diatom algae extend back to the Cretaceous Period, over 135 million years ago. Some kinds of rock are formed nearly entirely of fossilized diatom frustules. Considering the fact that they are microscopic organisms, the sheer numbers of diatoms required to produce rock of any thickness is staggering.