Classification of Sedimentary Rocks Part 2: Biogenic Rocks

We talked about siliciclastic rocks, so now let's talk about biogenic rocks. These are sedimentary rocks that are derived from the skeletal materials of living organisms. That's right, rocks made of things that were alive! The most abundant of these are carbonate rocks, or limestone. How do these form? How do we classify them? There is a lot to talk about here so let's dig in.
Script by Jared Matteucci
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[@9fmradisapratama]

I REALLY need this for my story worldbuilding and map making. I think I was clueless about sediments and rocks before even trying to imagine fantasy plates. Thanks again, professor Dave.

[@billyr2904]

Can you please continue the zoology series, because there's so many cool and obscure animals that need to be covered, and people are looking forward for them.

[@ProfessorDaveExplains]

working on that now!

[@GcinaZondo]

Thanks for making this video because our teacher gave us an assignment about this Thanks 😊

[@tonydagostino6158]

One minor point and one critique. Micrite is pronounced with a soft "i" as in Mick, not Mike. The vast majority of geologists use the Dunham scheme of carbonate classification as opposed to Folk's. Mudstone, Wackestone, Packstone and Grainstone are used, with some variations in detail, to describe the mud and grain content in a limestone.

[@glennpearson9348]

Neat stuff, Professor Dave. I have spent many years looking for tools fashioned by Native Americans - arrowheads, knives, and other tools formed from flint (chert). It's a fascinating hobby and to now better understand the methods of flint formation only adds to the fun! Thanks for you and your team's hard work!

[@waelfadlallah8939]

Great video Professor and what a fascinating fact that Diatoms contribute 20 to 50 percent of O2 production, though i wonder about the mechanism involved in such phenomenon 😊

[@xJEMAx]

i have your videos used in my chem class, thanks!

[@geoffgeoff143]

Excellent

[@Donatovapo]

Where did all the material that settled above the layers you said were older come from?

[@razmen6341]

Busted, you are using flat diagrams

[@tannith2858]

​@@Geo_Seph if the earth is round why aren't shoes curved? Checkmate globe earthers.

[@anbesivam6426]

Bro in mathematics still we need more detailed lectures on permutation and combination , binomial theorem , sequence and series , statistics and probability .

[@nandospm]

Subliminar message at 1:33

[@Sara-nj7ox]

??

[@donchristie420]

Sedimentary brains are becoming common in America

[@julianshepherd2038]

America is laying down brains?

[@donchristie420]

@@julianshepherd2038 layer by layer 🤨

[@TheRogueRockhound]

I always get confused with jasper, chert, flint, and chalcedony. I usually know which one I am looking at, but the classifications get a bit confusing

[@-JA-]

❤️👍

[@granodiorite9032]

👍

[@alquienmernilo8139]

9:39

[@_Jimmy.Savile_]

Yay early

[@livingcodex9878]

おはようございます

[@nirmalmishra6404]

Dave marina= fake marina

[@Sara-nj7ox]

Why???