Rock Identification with Willsey: Intro to Sedimentary Rocks!

Learn the basics of identifying sedimentary rock types with geology professor Shawn Willsey. Explore concepts of grain size, shape, and sorting. Look for future videos that dive into specific types of sedimentary rocks.
Link to PDF of my notes: drive.google.com/drive/u/0/fo...
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Shawn Willsey
College of Southern Idaho
315 Falls Avenue
Twin Falls, ID 83303

[@davidk7324]

Thanks Shawn. I appreciate the time you put into these videos.

[@Rachel.4644]

I've had a great time checking beach sands, river sediment, etc. with my stereoscope. Lots of complementary information in this session, filling in what I hadn't learned. I really appreciate your preparation and time. 👌🏼

[@johncooper4637]

Considering I took Physical Geology in the early 1970s this is a great refresher.

[@balesjo]

So true! My classes were around 1980-1981 so I'm really enjoying a refresher..

[@jjensen554]

Thanks!

[@neilrusling3438]

Discovered this channel today 25th December...My very own tiny Christmas miracle that I have to not watch now because im forced to be "sociable" with the family in ten minutes...its a world of pain! MERRY CHRISTMAS from "Scrooge" Rusling.

[@shawnwillsey]

Glad you can retreat to this geo-sanctuary as needed. Thanks for joining and watching!

[@tiffanyannhowe1712]

Hello Professor Willsey! Checkin in, liking and saving video. These are my “quiet time” treats. Thanks for the vid drop! Hope you’re feeling quite better 🖤

[@valoriel4464]

Thx, very interesting 👍. Happy Holidays everyone.

[@bottomup12]

I like the classroom time. Great video!

[@miqsh70]

Thank you professor for bringing geology knowledge to our KZbin land! Happy Holidays!

[@shawnwillsey]

You bet. I love sharing Earth’s stories with folks.

[@roneldridge7991]

Awesome job

[@MrFmiller]

Another informative video. I know much of what you present but there are gaps you fill in nicely.

[@cadenhowlett]

Love your classroom Shawn! Great maps

[@christinamekelburger7928]

Thank you for another informative video. I would have liked to be your student - now I'm trying to be a teacher like you. I suppose there are two main things students (not only geology students) have to learn are these: 1. Watch closely and entirely and differenciated. 2. Draw conclusions only AFTER having watched closely. With enthusiasm for the subject but without emotions that would make you blind for facts. This applies to practically anything one stumbles over throughout one's life. You are a very good role model for that. Thank you!

[@naughtiusmaximus830]

Just learned about zirconium trace dating. That would be an interesting topic.

[@balesjo]

As always, an enjoyable and informative video. Wishing you and your family a happy and safe holiday season!

[@SamtheIrishexan]

Much appreciated. I went to school for Finance so I really regret not getting into a science, so this is like free college. I likely will not ever need this for making a living, but I can certainly use this on the trips out exploring with the kids, making dad look smart 😁

[@shawnwillsey]

Awesome. Dad needs as many angles as he can muster with the kids. Good luck!

[@JesseFout]

Thank you, been waiting for this!

[@7inrain]

Thanks, great topic. Can't wait for the next videos. Merry Christmas.

[@cherylb9859]

Taking a geology course this semester, love watching your videos

[@shawnwillsey]

Enjoy and soak it up.

[@roneldridge7991]

Merry Christmas

[@grandparocky]

Merry Christmas Shawn! I appreciate this information as I am currently working to ID a deposit south of Homedale!

[@ahmedaziz6062]

Meaning a lot for me , thanks for teaching us.

[@ianstonehouse]

Fascinating! I’m hooked

[@Rachel.4644]

I really appreciate being able to print out the information! ❤

[@Ontario_Rockhound]

Cool video!!

[@TheBoilingWater]

Thank you Professor Willsey! Love your videos!

[@briane173]

Not sure when you recorded this but if it was during the current spate of arctic weather I'm surprised you're even *_IN_* the classroom. I endured a lotta -35° days in 30 mph winds when I lived in Idaho Falls in the 1980s and it wasn't pleasant.

[@CragDawgs]

This is so great thanks shawn

[@jlr3636]

Microscope - I spend hours looking at rocks, find a rock with a hole, cavity, vug - look down inside and often find a small universe, sometimes a fantastic cluster if minerals in near perfect shape. You can even disect a softer pit and dig through simular to being out in the back country diging a pit.

[@dialallama]

Looking forward to follow up videos. Definitely interested to learn about the bedding structures. I’m trying to work out the local cliffs near me.

[@brucedymock6635]

Great revision thanks👍

[@nitahill6951]

Great!

[@rdc008]

Shawn ... guess all I had to do was continue watching your sedimentary lecture to see your link to your handouts. Thanks so much. I appreciate your lectures and field trip videos.

[@shawnwillsey]

You are very welcome

Morning class again today! Thank You! Willsey ways are gonna making me look at my samples with better understanding! It'll be very helpful, and I can't wait to use my little microscope for the first time! Yey - rock on! 🤘🏻🧐

[@saadimostafazadeh9975]

That's great, thank you

[@muzikhed]

Interesting explanation. Diamictite is a new one for me, I've never come across that word before.

[@jenneyalberts1336]

Hello, so I hand carve a sentiment rock called zebra rock. It's 1,110,000 million year old. This was great informative

[@dennisdye7270]

Thanks for the video. Always had assumed that clay was a composition, but turns out it is a size only.

[@carloscorreia8928]

Thanks!!

[@qiangwangwu6323]

Thanks~🌹🌹🌹

[@kristiyansyarov3076]

Thanks for the great video. Just when I'm studying for my rocks exam at uni.

[@shawnwillsey]

Best of luck!

[@destob9586]

Omg you are amazing thank you for sharing I love rocks!!! From Ma and our geology is very diverse yet kinda blah lol

[@lcuymoody]

Hi, I’m in a geology class in Oregon and I have a question about angularity. My teacher today was emphasizing that when you’re looking at angularity, you’re not looking at the entire rock, but the particles inside of it. She said “I could hit it with a hammer and shatter it and completely change the angularity of the entire rock”. But I noticed in your video, you said those rocks were well rounded. I was assuming you were going to talk about the particles in the rock. So yeah, I’m just confused now because I don’t know if it’s the rock as a whole you look at to decide angularity or the shapes of the particles inside it. I hope you’re having a good week. I enjoy watching your videos with my dad! Thanks

[@DrGeorginaCook]

Yes it’s the shapes of the individual clasts/grains in the rock not the rock as a whole 😊 but you could still call it a well rounded sandstone etc

[@itisitisirish532]

Iridium Layer is a clue, that tells the tale. Looked that one up. Iridium is not just "asteroid dust" - it's also found in the earth's core. It gets to the surface in two ways: volcanic ...

[@fredglesener3283]

At my dark sky site Anthony Lakes, Oregon. The granite rock holding down my tarp has glowing spots in it. I switched from astrophotography to photographing the rock. It has blue-green glow-in-the-dark crystals mixed in with classic granite. Is that doped quartz? I left the rock in the sun all day and that night's pictures were fantastic. The whole area was the exact same granite with no sign of blue-green crystals. This 10 pound sample should be in your collection, or the pictures of it. Thank you for your well done video series. Fred, Kennewick, Washington

[@rockroll9761]

Cool

[@wordswords2094]

Very interesting! When you mention biochemical, are rocks like Trinitite included there, rocks created by nuclear blast, and man-made things, etc?

[@gladysseaman4346]

You might be interested in a you tube channel called Just Iceland or Icelandic. He just posted a video regarding the earthquakes ongoing on the Rekjuenes (sp?) Pennisula along with a scientific paper which you will understand better than I did.

[@lauram9478]

❤

[@lauram9478]

❤❤

[@basara5496]

The part about old school types putting the rock in their mouths to test the gritty feeling reminds me of the "Can I Lick the Science?" Meme... If you haven't seen it look it up - it's funny.

[@3xHermes]

👍

[@rdc008]

Wondering if your hand outs presented in your sedimentary lecture are available on line ?

[@shawnwillsey]

Yes indeed. Look under video description for the PDF link.

[@DoNotEatPoo]

I decided The Rock Cycle is one of the slowest methods of transportation ever invented.... It rivals PeopleMover at Disneyland.

[@SamtheIrishexan]

I am curious where the deepest sedimentation has occured. I live in Texas on the Edwards Plateau so its limestone quite deep here.

[@shawnwillsey]

Hmmm. Good question. Are you thinking modern or ancient? In other words, where is the thickest section of sedimentary rocks (and how old) OR what current basin has the thickest sequence of sediments?

[@SamtheIrishexan]

@@shawnwillsey i was thinking more which basin has been filled over the years, though both are equally interesting in my eyes =)

[@MEMELIFEBABY]

Water or cough drops might help that lingering dry throat.

[@DrGeorginaCook]

We were taught to lick the rock to identify halite, but silt, clay no thanks! 😂

[@GabrielMercier-ue9gs]

I am a big fan of your videos, but when you claim that sedimentary rocks make up 8% of volume, you are not serious. Which volume? Crust? Lithospere? Moon?

[@2Goiz_1ShanDA]

🤦oh man i diddnt wanna say it but i have a handful (or a boxfull)😊 of rocks i cant understand🤷. I dont have hcl yet but have a microscope 🔬& neo magnets. they are ohio river or near ohio river finds. Wierd shapes consistency's colors and some could fall into adena people tools. there was an inland sea here in this area😅 real mess!

[@stevewhalen6973]

Thanks!

[@stevewhalen6973]

Thanks!

[@shawnwillsey]

Thank you!

[@margaretrodina5493]

Thanks!

[@shawnwillsey]

Thank you for your kind donation. Glad you liked this.