Geology Field Trip of Torrey Pines Beach, San Diego California: Videographer Kevin Campbell

[@felipericketts]

I have walked that beach many times. I now see it in a much different and more interesting way! Thanks 🙂

[@marietjiehildebrandt1324]

Fascinating

[@lucyj1261]

Wetland like the sand dunes of Florence Oregon. Nice exolanation! DO MORE WITH MORE DETAIL OF ROCK CLOSEUP! ❤

[@cegbryan]

Hi Lucy, good suggestion. More closeups would be great but I want to keep the videos short; I think I did provide some fossil closeups. If you have the chance, visit the beach!

[@tdcfpc3630]

Great geologic cross section, thank you!

[@cegbryan]

Glad you enjoyed it, thanks for watching

[@balooga111atyahoo]

Correction- water expands when it freezes. Water contracts when it warmit warm

[@kmacdowe]

Nice chat, thanks!

[@cegbryan]

You are welcome, Kevin. Glad you like it. Visit the Beach if you haven't already!

[@madcolor]

Thanks much. Do we know when the event that formed the last part of your discussion happened (the massive land-slide that created the bench and rocks in the surf)?

[@cegbryan]

Hi there. I am not certain anyone has ever dated the landslide. I would say it is fairly recent, and still slumping due to wave action at its base. Thank you for your question.

[@lucyj1261]

Are there any fosils studies? Do you have knowledge of what research has been done on these rocks/deposits?

[@cegbryan]

As I pointed out in the video, the DelMar formation has many oyster and other fossils, as well as trace fossils. Yes all formations in San Diego and at this locale are well researched. One of my sources that I used to design my field trip was Dr. Patrick Abbott's excellent book, The Rise and Fall of San Diego, 1999, Sunbelt Publications. I also went on a field trip with him to this location, previous to recording my version of the field trip. Thank you!

[@michaeldose2041]

San Diego had a great natural harbor. LA had a pass through the mountains which is where I 10 now runs. LA built a harbor in San Pedro one of the biggest in the world. John Spreckles attempted to build a railroad through the mountains to the East of San Diego but it failed. That is the reason San Diego is a cul-de-sac rather than a corner. I don't believe anybody thought there were significant coal deposits in San Diego EVER. I am not sure why this guy would repeat such a silly story.

[@cegbryan]

See page 109 of Dr Pat Abbot’s book The Rise and Fall of San Diego…granted I am not a San Diego historian. Note that I mention this is one of the stories about Flat or Bathtub rock. There is also a reference to hopeful mining for coal by a Welshman named Bloodworth in the 1890s at Flat Rock in a Sept 2009 edition of the Torreyana newsletter for the Torrey Pines Reserve. On my trips to the location, I never saw anything which could be high quality coal.

[@michaeldose2041]

@@cegbryan I was a geology student when professor Pat was at SDSU. One of the better teachers I would say. I haven't read his book because I am still waiting for the ''fall'' of San Diego, I am sure it will be any day now. Pun intended. I can tell you definitively there is no coal here and table rock would be a dumb place to look. Coal had nothing to do with the railroad failure in San Diego. There has been MUCH written about why it failed. Check out Goat Canyon and the struggles there for starters.

[@cegbryan]

@@michaeldose2041 Right. I know Pat as a fellow member of the San Diego Association of Geologists. We were on a field trip led by him when he mentioned the coal story, and it may just be a story although there appear to be historical references. I am not steeped in San Diego history, being a graduate of Oregon State. If you are not a member, I encourage you to join SDAG for our monthly talks and our field trips and other activities

[@johnboach9493]

This infuriates me, a history lesson at the base of the La Jolla/Torrey Pines cliffs, and its about the Railroad !?! John Spreckles would F- in flip. Gomer go home !

[@cegbryan]

Thanks for your comments, although I must say I don't get the anger. My source material for the "story" about Bathtub rock and railroads is the 1999 book by Dr. Patrick L. Abbott, "The Rise and Fall of San Diego" Published by Sunbelt Publications. See page 109. Dr Abbott is a highly respected local geologist and often comments on San Diego geology on TV and online.