Conglomerate

Transcript:

Sarah: So this is the next new addition, and this is another one where i know our friends are going to know this by a different name, but this kind of lumpy bumpy stone that I know our friends are used to calling cobblestone, in our world is conglomerate. 

Kim: That's right so yes conglomerates are sedimentary rocks that form when a bunch of different sizes of other rocks that kind of get mixed together and then "lithified" or made into rocks. So they have usually pretty large pieces of other rocks. So you can see in the images there are some examples of it, and they're usually formed in sort of water that is moving very quickly so that it can transport or pick up some of those bigger rocks, and then they get deposited when the water slows down a little bit, and then all those big rocks get kind of stuck together with matrix or other smaller materials, and then gets kind of squished together to form another rock. 

Sarah: That is super cool. So when we have things like sand that get smooshed together and turned into stone we get our sandstone like we have over here, but then the bigger stuff becomes conglomerate. 

Kim: That's right.