This is a large accumulation of calcium carbonate and stalagmites, Yok Balum Cave, Belize. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert!

Figure 1: As thermal water at 79.2°C reaches the surface, white calcium carbonate precipitates, forming a base for the proliferating red and green layered biofilms—woven bacterial mats ...

Between 252 and 66 million years ago, the ocean underwent a revolution. That's when plankton with calcium carbonate skeletons ...

One of the most common chemicals connected to calcium is called “carbonate”, and together they make calcium carbonate. Calcium carbonate is in eggshells, seashells, a rock called marble, and in ...