I just found your channel and I can't get enough of it. I hope you are still filming. I live on Central Coast, close to San Luis Obispo. We have the same shale and sandstone mix plus a lot more. Have you ever visited Morro Bay and the Seven Sisters? Keep on educating us, please!
Maybe more a titanosaur than a velociraptor would lay an egg that size :-) Fascinating "rock pearls" tho' :-) Also another "Zentnerd" here. Appreciate the time you take to show these fascinating snippets from the geologic past.
Interesting and very informative. I used to collect fossil concretions in an area known as the Mazon Creek deposits outside Chicago. The smaller concretions are found in the Francis creek shale in various sizes and look like baked potato’s. The explanation is that organic material from the Carboniferous period (plants, insects, etc.) were rapidly buried in a river delta and in an anaerobic environment formed a chemical change in the surrounding material causing a concretion. The fossils when cracked open are amazingly detailed and beautiful. Thanks for these entertaining and nicely made videos.
THANK you. That process shows up in so many places- calcite crystals in seams- now I understand it better. And I can look for these concretions the next time I'm at Crystal Cove! I think the cliffs of Little Corona Del Mar are Monteray Shale as well. I'm another Zentnerd, someone who's been reading geology blogs and watching geology vids and sloooowly learning geology 101 for years until I've got a lot of the basics, but I really REALLY appreciate having a geologist walk us through particular formations and rocks around the area so we can get more than "yep, that's marine sandstone," and "yep, that's shale" and "there's gotta be marine fossils somewhere around here, right?" If you have a chance, could you explain the vertically uplifted layers in the water just off the beach at Little Corona Del Mar? It's shale (I assume), looks like wood grain, but it's tipped up all the way on its side, and I don't think it's Monterey; it may be the next layer under it. I used to call it the "bones of the sea" when I first moved here, which betrays the fact I'm a humanities major, not a geologist. There's a nice sea arch there too, by the way, but I think that's probably Monterey Shale. This is the beach just north of Pelican Point and Crystal Cove. Crystal Cove has some of those upturned layers in the water as well, but not quite so much. Those layers holding tidepools between their "pages" really caught my attention when I first moved to California from back east where there's dirt and plants all over everything.
In north Texas the Arcadia Park Formation produces lots of these septarian nodules with smaller calcite crystals inside like a geode or giant blocky crystals that run in veins throughout.
Hey Todd, having just studied the various forms of Monzogranite in Joshua Tree I was pleasantly surprised to find out that the park is basically a series of Batholith's. The eastern part of the park is 240 mya out by Forty nine palms, and the Queens, Palms and White Tank granites from more recent formation and uplift. I understand that the Sierra Nevada batholith was from the Farallon subduction. Do you know what microplates? were responsible for these older batholith's? Thanks for your reply. Oh and the old Rhodinian mtn range which left the Pinto Gneiss is just an amazing story as well.
I just found your channel and I can't get enough of it. I hope you are still filming. I live on Central Coast, close to San Luis Obispo. We have the same shale and sandstone mix plus a lot more. Have you ever visited Morro Bay and the Seven Sisters? Keep on educating us, please!
Maybe more a titanosaur than a velociraptor would lay an egg that size :-) Fascinating "rock pearls" tho' :-) Also another "Zentnerd" here. Appreciate the time you take to show these fascinating snippets from the geologic past.
Greetings fellow Zentnerd! Hahaha! Yeah, I got lazy. 😉 Thank you for watching!
Thanks, right in my backyard and I never thought to look. Also a "Zentnerd".
Same here, love Nick and he recommended this gent 👍🏻
Greetings fellow Zentnerd!
Here's another Ned Zinger fan!
Interesting and very informative. I used to collect fossil concretions in an area known as the Mazon Creek deposits outside Chicago. The smaller concretions are found in the Francis creek shale in various sizes and look like baked potato’s. The explanation is that organic material from the Carboniferous period (plants, insects, etc.) were rapidly buried in a river delta and in an anaerobic environment formed a chemical change in the surrounding material causing a concretion. The fossils when cracked open are amazingly detailed and beautiful. Thanks for these entertaining and nicely made videos.
THANK you. That process shows up in so many places- calcite crystals in seams- now I understand it better. And I can look for these concretions the next time I'm at Crystal Cove! I think the cliffs of Little Corona Del Mar are Monteray Shale as well.
I'm another Zentnerd, someone who's been reading geology blogs and watching geology vids and sloooowly learning geology 101 for years until I've got a lot of the basics, but I really REALLY appreciate having a geologist walk us through particular formations and rocks around the area so we can get more than "yep, that's marine sandstone," and "yep, that's shale" and "there's gotta be marine fossils somewhere around here, right?"
If you have a chance, could you explain the vertically uplifted layers in the water just off the beach at Little Corona Del Mar? It's shale (I assume), looks like wood grain, but it's tipped up all the way on its side, and I don't think it's Monterey; it may be the next layer under it. I used to call it the "bones of the sea" when I first moved here, which betrays the fact I'm a humanities major, not a geologist.
There's a nice sea arch there too, by the way, but I think that's probably Monterey Shale. This is the beach just north of Pelican Point and Crystal Cove. Crystal Cove has some of those upturned layers in the water as well, but not quite so much. Those layers holding tidepools between their "pages" really caught my attention when I first moved to California from back east where there's dirt and plants all over everything.
Great content! Keep them coming.
Thank you again, Todd. This is new information to me and I'm glad to see inside a few. They are beautiful! Yes, another Nick fan. 👏🏻 🤩
Enjoyed your video! I was there and missed that somehow!
Thanks Mary! You'll have to check them out next time!
Dosh garnet another excellent geo-video from OC.
In north Texas the Arcadia Park Formation produces lots of these septarian nodules with smaller calcite crystals inside like a geode or giant blocky crystals that run in veins throughout.
in the 80's i used to find small versions of these in the hills at my parents house in Encinitas ca.
Yep! Very common within shale layers and I believe this Monterey Formation is down there in Encinitas as well.
Hey Todd, having just studied the various forms of Monzogranite in Joshua Tree I was pleasantly surprised to find out that the park is basically a series of Batholith's. The eastern part of the park is 240 mya out by Forty nine palms, and the Queens, Palms and White Tank granites from more recent formation and uplift. I understand that the Sierra Nevada batholith was from the Farallon subduction. Do you know what microplates? were responsible for these older batholith's? Thanks for your reply. Oh and the old Rhodinian mtn range which left the Pinto Gneiss is just an amazing story as well.
You are freaking amazing.
we have lots of these in laguna hills 4" to 8" always a little shells inside :)
You did not mention the shell formation on top of the rocks. There is a layer of shells about a foot thick near the top.