An instant favorite video on YT!! Thx!! We still want to know what the original shape of the volcano was. Was it a typical shield volcano of say a few hundred feet in height, or was it a low lying caldera that then erupted creating the current ring structure?

Superbly presented, beautifully illustrated, another vein of gold to pursue! Thank you!

Fun fact: The area covering large parts of Cumberland, Franklin, and Adams County PA(plus a very small part of York County) are the northernmost point of the Blue Ridge Mountain region. It's the only part of the state within that region of Appalachia.

Thanks for this great explanation

Sedimentary record meets paleontology! So fantastic we have this gem right in our backyard in VA

You want to know where you can experience this frequently? Desert mountains in Southern California. Some of the debris slopes are treacherous to walk on because they are steep, and everything is at the angle of repose. The rocks erode readily into lots of small loose debris, and it just sits there at the angle of repose, I assume because of the scrity of water flowing on the surface to move the debris. I can think of some off trail places in Death Valley. Also the Union Wash fossil location near Lone Pine (Lower Triassic ammonoids mostly) is another good example.

First!

thank you thank you for sharing this site! Tell us more about the history of the finding.

Retired geology enthusiast here, I live in Fairfax, would love an opportunity to see these fossils!

Prof Bentley, great find and thank you for sharing more Virginia geology!

Great to see those dinosaur footprints. We thank the quarry operations folks for noticing the footprints and saving them when they got to that layer of rock.

Your video is amazing, keep going.

You lead such a cool life and you definitely deserve it. :) Thank you for sharing and teaching! 💕

So interesting. I wish they taught us this in school.

Wonderful how a boat that goes nowhere can discover so much thank you

Kyle Noseworthy and Jason thats crazy

Great advice for many fields not just geology thank you

Thank you very much, this video of yours solved my big problem.

The new bird sighting almost seems pie worthy

Sounds like a great experience.

Also, I agree - Education is guiding students in what detail deserves their attention and focus.

Yay for Barberton. I am from South Africa, we are blessed with fascinating geology there. I always expose travelers to geology as much as I can on safaris, some people really get into it once they realise how primary geological inquiry is. Namibia is one of my favourite geological wonderlands to visit! Have you been there before?

Hi Callan! Awesome, thanks so much for answering some of my geography students' question here from Costa Rica! Looking forward to sharing this with them.

Wow. So beautiful. And so cool. How lucky you are.

Way to LIVE Callan!

Blows my mind….an engineering marvel!

These outings are wonderful, I learn something new every time!

I have a rock that is ejecta from that impact.

So exciting!

I am so jealous!

Dear Callan, I know that your schedule time on board is demanding, but may I ask if there is any particular thing that has impressed you concerning the core sample contamination protection?

You would probably have made a good engineer. We're surrounded by ingenious devices and solutions that allow us to live the lives we do.

Very cool. Looking forward to seeing some drill cores. Maybe explain what you're expecting to find and what that tells you. Have fun.

Really cool. I assume there are a slew of Geophysicists on this project? Keep us apprised. Thanks.

Im a geology student at UH and been hiking around Hawaii since I was born here. Awesome video and I love seeing Geology explained about Hawaii. I always love to learn more and you have provided a great video. I hope you can make it out here again and do some other hikes around the island, there are some amazing spots of geology in these hikes. Great vid

How exciting, Callan!

Great Callan!

Wow. Very exciting project. I hope you get the chance to make some videos at sea describing the operation and how things get done out there.

Thank you

Nice brief video on the mud volcanoes.

Your students are lucky to have an inspiring teacher (in one of the best subjects!) Keep up the good programming. You pack a lot of info into a short period...

You mean non-conformity?

I don’t know why people are just walking by, you make visiting Diamond Head far more interesting.

Right! It shows us the history of Earth. Thank you from a non geological person.❤❤❤

Why walk? Why not just talk. 😅

Gneiss? In Southern California? What? That jumped right out at me, considering that well into the Mesozoic, southern California did not yet exist as continental crust. What the heck is gneiss doing there? But the age jumped out to me as well, 1.6 billion years; that puts it in super continent Columbia time. So, are these broken remnants of the continental breakup and existed as submerged blocks on the continental shelf all that time? Or were they carried in with an exotic terrane? So much we don't know. I wonder if they could be chemically matched with other gneisses, and we could put the puzzle back together that way?

What kind of lithofacies contain by that sedimentary rock?

I love this stuff.

I subscribe to The WV Explorer to appreciate Alleghanian present day speleology. Started my journey into where the sun never shines with organized exploration in 1964. Offer readers another perspective: Horsethief LIDAR Flythrough

Do we know at what temperatures those folds occur at? Or how far under the surface during the folding period? As someone who knows little about geology, it’s difficult to imagine how the resulting folds are smooth and wavy and why the brittle rocks just don’t fracture into crumbs. I always hear “high temperatures and pressures” but are we able to quantify those parameters for specific types of rock folds?