⚙️ how
How do coral reefs turn into limestone rock?
GeologyMarine geology
Quick Answer
Tiny coral polyps build skeletons of calcium carbonate, and over time those skeletons accumulate into reef limestone. If the reef is buried and lithified, it can become solid rock.
The Full Story
Reefs start as living structures built by coral polyps and other calcium-carbonate-secreting organisms. As generations grow, die, and are overgrown, their skeletons pile up into thick frameworks. Sediment fills the gaps, and over long periods pressure and chemical cementation turn the material into limestone. Ancient reef limestones are preserved in many parts of the world as evidence of former tropical seas.
Key Facts
1.Coral skeletons are made of calcium carbonate
2.Reefs can become limestone through burial and cementation
3.Ancient reef rocks record old tropical oceans
YouTube Angle
Suggested video title for this topic:
"How does a living reef become solid rock?"