I grew up in the SF bay Area. Had to move north as an adult. I miss California's geology. Your geology is much more interesting than my area. We are surrounded by the Columbia River Basalts. Lots of basalt. Catastrophic flood stories get old after awhile. until you start looking at the accretions of Siletzia into the North Cascades .
Yea! You're northward to the Topanga sandstone. If you venture a bit farther north to Topanga Canyon Boulevard, between Hwy. 101 and the beach, you can easily see some awsome layers of different size pebbles etc. across the canyon from the Blvd. in the gorge. Old Topanga Canyon has a hill face eroding onto the road that has small shell fossils in it. I found some many years ago, but no longer live in the area, so the exact spot has faded in my memory. Topanga State Park, Eagle Rock has some nice erosional carving. Also, if you drive Malibu Canyon Road between the beach and Hwy. 101 (it's called Las Virgenes on 101), there are more beautiful, uplifted layers.
Great stuff. Your personality and information are perfect for this, shall I say, "fossiliferous" subject. Interesting that the schist is so fragile compared to other older forms such as the Vishnu in the Grand Canyon. I have a rock collection in my office and teach my patients about this wonderful science all day.
Thanks Doc! This glaucophane schist chunk has been separated from its source rock for 15-20 million years and has been heavily weathered. You're right the Vishnu is much older, but has only been exposed (they think) for approximately 6 million years when the uplift of the Colorado Plateau caused the Colorado River to cut down at a rapid rate. I suspect if we break a chunk of the Vishnu off and let it get weathered for another 15 million years it would be in a similar condition....maybe not, but fun to think about.
@@geologicallyspeaking I guess I just drew the false conclusion that once these sedimentary rocks were crushed and morphed into the dense version that they would withstand any weathering events. Keep up the good work.
Hooray! Again, it's such a delight having our very own local Zentner! I know that trail, and you just confirmed for me some smaller and less distinct shell-bearing rocks and chunks eroding out of the sandstone at the top of the Quail HIll Loop hiking trail just inland from Laguna Canyon, near the 405. I take it Irvine and Tustin are gonna wiggle like sand on a trampoline, same as the LA basin, if and when the Newport-whatsit fault or that Cochella-Valley-Doom bit of the San Andreas or (heaven forfend) the Elsinore fault let go. Alluvial fill, such a great housing foundation, riiiiiight?
Nick Zentner fanboy who he steered over here. You might be asking then, "What the hell dude, this isn't anywhere near Washington." Turns out most of my childhood I grew up in Simi, Palmdale and Ventura. I know California geography well from Boy Scouts, etc. I regret that I didn't appreciate this particular science when I lived there. Anyway, I like your presentations and personality. Can I be your fanboy too?
Haha! I would be honored! I really love CA Geology; there is so many different facets to it in such a small area just here in SoCal. Thanks for the kind words and for watching.
No apology necessary. Your enthusiasm gives me a thrill thinking of how to spend my days.
Very nice visit 😊
Next best thing to hiking with ya!!
Thank you 😊
I grew up in the SF bay Area. Had to move north as an adult. I miss California's geology. Your geology is much more interesting than my area. We are surrounded by the Columbia River Basalts. Lots of basalt. Catastrophic flood stories get old after awhile. until you start looking at the accretions of Siletzia into the North Cascades .
Yea! You're northward to the Topanga sandstone. If you venture a bit farther north to Topanga Canyon Boulevard, between Hwy. 101 and the beach, you can easily see some awsome layers of different size pebbles etc. across the canyon from the Blvd. in the gorge. Old Topanga Canyon has a hill face eroding onto the road that has small shell fossils in it. I found some many years ago, but no longer live in the area, so the exact spot has faded in my memory. Topanga State Park, Eagle Rock has some nice erosional carving. Also, if you drive Malibu Canyon Road between the beach and Hwy. 101 (it's called Las Virgenes on 101), there are more beautiful, uplifted layers.
love the geologic information from my local beach area.. 😁👍
Lovely fossils, great information and presentation. Thanks from UK.
Wow the UK! Greetings from SoCal. Thanks for the kind words and for watching.
Great stuff. Your personality and information are perfect for this, shall I say, "fossiliferous" subject. Interesting that the schist is so fragile compared to other older forms such as the Vishnu in the Grand Canyon. I have a rock collection in my office and teach my patients about this wonderful science all day.
Thanks Doc! This glaucophane schist chunk has been separated from its source rock for 15-20 million years and has been heavily weathered. You're right the Vishnu is much older, but has only been exposed (they think) for approximately 6 million years when the uplift of the Colorado Plateau caused the Colorado River to cut down at a rapid rate. I suspect if we break a chunk of the Vishnu off and let it get weathered for another 15 million years it would be in a similar condition....maybe not, but fun to think about.
@@geologicallyspeaking I guess I just drew the false conclusion that once these sedimentary rocks were crushed and morphed into the dense version that they would withstand any weathering events. Keep up the good work.
You should offer tours to the public of these wonderful Orange County fossiliferous sites.
Love the music 🎶 🎵
Love this channel! I know it's a ways from you but if you can do somewhere in Ventura county, that'd be super cool!❤️
Hooray! Again, it's such a delight having our very own local Zentner! I know that trail, and you just confirmed for me some smaller and less distinct shell-bearing rocks and chunks eroding out of the sandstone at the top of the Quail HIll Loop hiking trail just inland from Laguna Canyon, near the 405.
I take it Irvine and Tustin are gonna wiggle like sand on a trampoline, same as the LA basin, if and when the Newport-whatsit fault or that Cochella-Valley-Doom bit of the San Andreas or (heaven forfend) the Elsinore fault let go. Alluvial fill, such a great housing foundation, riiiiiight?
Nick Zentner fanboy who he steered over here. You might be asking then, "What the hell dude, this isn't anywhere near Washington." Turns out most of my childhood I grew up in Simi, Palmdale and Ventura. I know California geography well from Boy Scouts, etc. I regret that I didn't appreciate this particular science when I lived there. Anyway, I like your presentations and personality. Can I be your fanboy too?
Haha! I would be honored! I really love CA Geology; there is so many different facets to it in such a small area just here in SoCal. Thanks for the kind words and for watching.
No lady - I'm not a stalker ... I'm a rocker ! Rock on !
Hahahaha! Perfect.
Interesting…I live in Topanga, CA near the Topanga formation in the Santa Monica mountains. Check it out sometime, talk about fossiliforous…😛😉
Why the name Topanga? I clicked thinking you were in Topanga Canyon in the SaMo Mts
Same here
Best TH-cam recommendation I've had in a long time! You ROCK 🪨 dude!! 😛✌️❤️