Two geology courses over 50 years ago from which I unfortunately retain nothing but an interest in minerals and rocks. Many books and videos later, I find your videos to be great refreshers. Thank you from New Mexico!

I like your presentation, I really do, but I have to say the camera work is horrible. Please invest in a tripod or find someone that knows what they're doing to run the camera for you. That would improve the watchability of your video a lot. Cheers.

It often occurs to me how clever the ancients were when they invented concrete. It is a substance that is very analogous to what comes from nature. It is a composite material consisting of a matrix surrounding larger particles. Those particles can be whatever happens to be available locally, rounded or more angular. And within the matrix itself is smaller grains of sandy materials. The cement itself is typically ground limestone (calcium oxide) set into place by hydration. This happens all over the earth. The ancients, and particularly the Romans, figured out how to bring this into their buildings, homes, roads etc. They saw how rocks are composed and reasoned that they could do this themselves.

Extra thumbs up just for mentioning Dairy Queen.

Clastic=Broken

I have no prior knowledge of Shawn Willsey. KZfaq began prompting his videos after I started looking at rocks recently

Just take a photo of the rock and your app for identifying rocks will tell you in seconds what you are looking at.

Phaneros

Rocks are easy to identify, most fit in one category and that's, leaveright. And that tells you what to do with it. Leave it right where you found it.

How come it's not pronounced "Gran-nite" like everything else?

Thank you so much,Shawn! I get so tied up in my underwear over the rock types because I haven’t had these introductory ideas. Nick’s classes do not have the touch and feel rock lab with them. So you are our ROCK LAB. I love your concept of the “minerals that hang out together”! I’ve seen that chart but not really understood it. Perfect! Thanks

I really like your showing us whether the minerals are all crunched together and sharing boundaries vs crystals in a background matrix. I see that now. Whoa! So simple yet.... new! Thanks again. I will watch your minerals video next.

This is an amazing presentation professor Willsey! You are a wonderful teacher!!! Thank you!

Thank you, Shawn! All of your videos are great, and looking forward to more!

Thank you so much for doing this. I absolutely love geology and have always wanted to learn more about rock types. Love this.

I really appreciate this series. I’ve watched countless videos about identification. They present the same information but your approach at teaching is easy for me to follow. My persistent desire to learn and previous exposure to all the information gave me the background to understand what you are presenting but the way you teach really made it easy to absorb. I’ll give you credit for that. Maybe I’ll retain more of the information. Thanks.

Very helpful! Some of the mystery has been solved! Thank you again, Shawn.

Great series of classroom videos!

Their story. I love it. That’s what I need to help me learn. Looking forward to this.

Thanks for making these Shawn! I especially enjoy learning about Idaho's geology but these long form videos are very engaging as well.