I haven't been but I'm always looking for places to check out so I'll add it to the list! I understand the sensitivity to its location so I might not be able to make a video but it still would be cool to see. I looked it up on a geologic map and although there's a fault in the next canyon to the south and the San Andreas about a mile offshore there's no obvious reason to explain the hot spring's presence. Typically we'd expect a fault to cut right through the area or a transition between two different rock types that creates a crack for hot water to rise to the surface, but that doesn't seem to be the case. All the more reason to check it out on the ground to see what's going on, thanks!
@@PoopyArchaeology There's also a natural spring in the parking lot directly above the place. Three plastic pipes stick out of the hill and people stop to fill up there jugs. It tastes great! As for the hot springs, last weekend at low tide would have been the perfect time to go...If it weren't for the virus. You also have to be comfortable getting VERY close to a bunch of naked strangers. Not for everyone, but I've been enjoying this spot for decades.
I'm glad you've been liking the geology videos! And good idea about Kern River - it's beautiful and has some cool geology. For now I've just been doing wherever I happen to be near, but it would make a for a good excuse for a camping trip! In the meantime here's a link to a geologic map of the area, which can tell you the rock types and their ages along the river: ngmdb.usgs.gov/ngm-bin/pdp/zui_viewer.pl?id=7660
@@PoopyArchaeology p.s. If you ever want to collaborate on granite pegmatite/possible extensions fault scraps, let me know. It would make a great vid someday.
@@Suburbanstoneage I sure will let you know - my wife and I are having a baby any day now so will probably be out of commission for a little but if we're ever out that way that would be great idea!
@@PoopyArchaeology Yay and congratulations on your pending arrival ! No worries, good thing about geology is that the mountains will still be there for a long time. That area is so great for families. Hubby and I have camped there with our kids since before they were born. Enjoy your new blessing and Happy Holidays!
Hi Dorothy, thanks for subscribing! I'm guessing you saw the recent Marin Headlands video (czcams.com/video/DUdktsdb4tw/video.html) - if you look in the text description underneath the video I've provided several links to other sources of information about the Headlands. Hope that helps!
I really love that area for geology and rocks too, I have a video collage of me mineral collecting near stinson beach for a mineral called ferroaxinite: czcams.com/video/Bb0rJ7PMSes/video.html. The rock in the area was made up of fine grained hornfel, i think it was a exotic terrane that was uplifted by the fault action around there. The video goes over a little bit of the regional geology.
On the agate beach place, I found the small oil agates (before it was illegal) a good 1/2 mile down the beach, in a very high concentration. I wonder where the chalcedony was eroded from, because the cliffs around didn't have any chalcedony veins.
You're right! But the water that filled the bay came from rising sea levels about 10,000 years ago, so the sequence of events was 1) the San Andreas created a long valley through lateral movement along the fault that 2) later filled with water at the start of the Holocene and formed the bay as we know it now
@@PoopyArchaeology - thanks BTW that long valley is called the Olema Valley and at the northern end which you probably already know is the Tomales Bay a continuation of the San Andreas Fault line. I have lived in the area since the 1960's, always heard San Andreas fault, was prominent in the Bolinas area never end about the San Gregorio (I think that is right, sorry if I forgot, I recall you mentioned a G word). I enjoy your videos, I love long involved geology of California Videos, so many are 2 minutes, which drives me nuts... not enough time to really sincerely talk about the fascinating geology of California, Thanks for sharing your knowledge hope to see more videos in the future
lived in stinson, bak 30 yrs. ago miss it miss bolinas too very unique beauty and people
what kind of marine life one can see at bolina's
I love rocks and the Bay Area. Good content!
Love this ... more more more
From this area so it really resonates
Awesome to hear, thanks! Stay tuned for more in November
This is so fascinating, thank you!
Thanks for the feedback! Will try to get some more geology videos out soon
This is awesome, thanks! More please!
love it brother! big picture geology ☮
Without disclosing its exact location, could you do a video about the hot springs south of Stinson?
I haven't been but I'm always looking for places to check out so I'll add it to the list! I understand the sensitivity to its location so I might not be able to make a video but it still would be cool to see. I looked it up on a geologic map and although there's a fault in the next canyon to the south and the San Andreas about a mile offshore there's no obvious reason to explain the hot spring's presence. Typically we'd expect a fault to cut right through the area or a transition between two different rock types that creates a crack for hot water to rise to the surface, but that doesn't seem to be the case. All the more reason to check it out on the ground to see what's going on, thanks!
@@PoopyArchaeology There's also a natural spring in the parking lot directly above the place. Three plastic pipes stick out of the hill and people stop to fill up there jugs. It tastes great! As for the hot springs, last weekend at low tide would have been the perfect time to go...If it weren't for the virus. You also have to be comfortable getting VERY close to a bunch of naked strangers. Not for everyone, but I've been enjoying this spot for decades.
@@tritisan Haha CZcams might not be cool with nudity and all but great to know about, thanks!!
This was a great vid! Fan request: can you do a vid on the Kern River Valley? South Fork even?
I'm glad you've been liking the geology videos! And good idea about Kern River - it's beautiful and has some cool geology. For now I've just been doing wherever I happen to be near, but it would make a for a good excuse for a camping trip! In the meantime here's a link to a geologic map of the area, which can tell you the rock types and their ages along the river: ngmdb.usgs.gov/ngm-bin/pdp/zui_viewer.pl?id=7660
@@PoopyArchaeology awesome, thank you for the map link! Definitely worth a visit there when you can. Keep up the awesome vids!
@@PoopyArchaeology p.s. If you ever want to collaborate on granite pegmatite/possible extensions fault scraps, let me know. It would make a great vid someday.
@@Suburbanstoneage I sure will let you know - my wife and I are having a baby any day now so will probably be out of commission for a little but if we're ever out that way that would be great idea!
@@PoopyArchaeology Yay and congratulations on your pending arrival ! No worries, good thing about geology is that the mountains will still be there for a long time. That area is so great for families. Hubby and I have camped there with our kids since before they were born. Enjoy your new blessing and Happy Holidays!
Love bayarea geography/archeology! Subbed. I would like to know more about marin headlands how they used to be ocean bed. Please
Hi Dorothy, thanks for subscribing! I'm guessing you saw the recent Marin Headlands video (czcams.com/video/DUdktsdb4tw/video.html) - if you look in the text description underneath the video I've provided several links to other sources of information about the Headlands. Hope that helps!
I really love that area for geology and rocks too, I have a video collage of me mineral collecting near stinson beach for a mineral called ferroaxinite: czcams.com/video/Bb0rJ7PMSes/video.html. The rock in the area was made up of fine grained hornfel, i think it was a exotic terrane that was uplifted by the fault action around there. The video goes over a little bit of the regional geology.
On the agate beach place, I found the small oil agates (before it was illegal) a good 1/2 mile down the beach, in a very high concentration. I wonder where the chalcedony was eroded from, because the cliffs around didn't have any chalcedony veins.
Right on! I'm not too familiar with the mineralogy of the area, so this is good to know. Also loved the Dio in there, that was a nice surprise!
I thought Bolinas Bay was formed by the San Andreas fault....
You're right! But the water that filled the bay came from rising sea levels about 10,000 years ago, so the sequence of events was 1) the San Andreas created a long valley through lateral movement along the fault that 2) later filled with water at the start of the Holocene and formed the bay as we know it now
@@PoopyArchaeology - thanks BTW that long valley is called the Olema Valley and at the northern end which you probably already know is the Tomales Bay a continuation of the San Andreas Fault line. I have lived in the area since the 1960's, always heard San Andreas fault, was prominent in the Bolinas area never end about the San Gregorio (I think that is right, sorry if I forgot, I recall you mentioned a G word). I enjoy your videos, I love long involved geology of California Videos, so many are 2 minutes, which drives me nuts... not enough time to really sincerely talk about the fascinating geology of California, Thanks for sharing your knowledge hope to see more videos in the future
Great! thanks for watching and I'll try to get some more ready soon, stay tuned :)