Southern California Geology | A Volcanic Plug of Dacite Columns

Join me as I explore a volcanic plug of dacite columns and associated lava flows of a volcano that erupted in Southern California some 15 million years ago!

Music: The Elovaters

[davekim]

I'm a mailman who has been delivering mail in the area where this volcano is. I've wondered for years the history of this volcano as I drove by it daily in my mail truck. Lately I became curious about this area and found your video. It was just what I was looking for. Now I know so much more regarding the area I have been delivering mail for years in. Thank you.

[socalpal]

Before the developers came in, this area was pretty much wilderness. We used to ride our dirt bikes here as well as leap into the lake from it's rather high cliffs. This area was a rock quarry at one time hence the lake. Glad to see it's been preserved. Fun video mate.

[Naturallystated]

Never heard the description of the transition from subduction to transform described and shown so clearly. That info-graphic should be required in all SoCal intro to geology courses.

[sdmike]

WOW! How friggin cool! I was thinking while watching a recent Nick Zentner video of Cascade geology, ‘it’d be cool if someone covered SOCAL geology in similar fashion”. BOOM! Thanks for posting! Very well done!

[harmonyway]

Awesome video !!! Awesome knowledge !!! Thanks for sharing !!!

[tonidougsmith-congratulati]

Awesome! Didn't know there were columns in the plug. When you showed the spherical weathering shot, I thought you had found a skull!!😂 very informative and you make it easy to understand. So glad you survived!! Mom

[TnTMyers]

Thank you so much for a very informative and easy to understand geology trip!

[earthandtime]

Excited to explore this area next time I am in Carlsbad. Thank you for the informative and fun video :)

[astrogeo]

Very interesting video ! Watching this from Norway. We have such magma / lava columns in parts of Norway too, not basalt. Strangely not even recognized. Been talking to top geologists about it, they hardly believe me. Much of the Earth's surface have yet to be explored by a discerning eye.. 🧐 🌍

[vernonvillasenor]

I am an armchair geology fan and absolutely love your videos! I live in Southern Orange County. Would you ever consider hosting a field trip? Any ideas on if any geologists do local tours?

[eddieagnich]

Very informative and interesting. I really enjoy these little facts of nature. Thanks,

[mikethierry]

Just flipped your channel . And I tripped out on the fact you were in Carlsbad . I live and have been in Carlsbad since 84 . I found just by chance and watched the video .keep it up . Maybe talk about the old hot springs that are around the lower dam towards the coast .that's how aqua hedionda got its name.n

[oscar_m_san-diego]

Thank you for posting your video. Me and a bunch of geology enthusiasts visited the location just because of your video. Six of us Zentnerds explored the volcanic plug. Your video helped a lot.

[JonnyHuman]

This was fantastic. Thanks for this -- more pls! :)

[j]

Excellent again! Thank you for scrambling the risky heights to get up close - great to see those joins. Cheers from England.

[Kompressor]

Wow. Great find Todd! As you told the story and then explained, light bulbs kept lighting for me. Columnar Dacite. I have seen the Columnar Basalt in the NW, but, I never thought about Dacite cooling and developing columns. Geology is made cool by teachers like you. Great Video! Oh, and thanks for not falling off the wall.

[rdgurule]

I live at the west end of the Columbia R Gorge. Very lucky to see all the basalt layers and columns. This video was very informative. The Nick Zintner YouTubes are amazing.

[stevenrey]

Your an allstar! I found that very interesting.

[charliedoyle]

Great job zooming in on the map, and with the charts. They make your field trips even better!

[tonecola]

You have family here if so next time your in town check out the waterfall below there to the north. There was another quarry there next to the I 78. Now there's a Walmart and a kohls well drive to the kohls sign and look over the fence. It was way better when I was a kid although still cool to check out. We would follow the river west through the marsh . There's still a couple of lakes there too. Actually now that I think about it the whole area is interesting.
Also check out De Luz Canyon, really cool.