![If you put chalk under a powerful microscope—white cliffs of Dover type chalk, not the modern blackboard variety—you will see something like this Because it's not just a rock. It's an accumulation If you put chalk under a powerful microscope—white cliffs of Dover type chalk, not the modern blackboard variety—you will see something like this Because it's not just a rock. It's an accumulation](https://preview.redd.it/hqcplrau7jc11.jpg?auto=webp&s=c8869075e246385d04c0e32ac122b12997ac4bc2)
If you put chalk under a powerful microscope—white cliffs of Dover type chalk, not the modern blackboard variety—you will see something like this Because it's not just a rock. It's an accumulation
![File:Chalk ("Upper Chalk" Formation, Upper Cretaceous; White Cliffs of Dover, England, southern Britain).jpg - Wikipedia File:Chalk ("Upper Chalk" Formation, Upper Cretaceous; White Cliffs of Dover, England, southern Britain).jpg - Wikipedia](https://upload.wikimedia.org/wikipedia/commons/5/52/Chalk_%28%22Upper_Chalk%22_Formation%2C_Upper_Cretaceous%3B_White_Cliffs_of_Dover%2C_England%2C_southern_Britain%29.jpg)
File:Chalk ("Upper Chalk" Formation, Upper Cretaceous; White Cliffs of Dover, England, southern Britain).jpg - Wikipedia
![The famous chalk White Cliffs of Dover on the south coast of Kent, UK, are subject to erosion and frequent rockfalls Stock Photo - Alamy The famous chalk White Cliffs of Dover on the south coast of Kent, UK, are subject to erosion and frequent rockfalls Stock Photo - Alamy](https://c8.alamy.com/comp/D00MH2/the-famous-chalk-white-cliffs-of-dover-on-the-south-coast-of-kent-D00MH2.jpg)