Geography, geology, and oil refining all in one video. Well done. My last job was writing training manuals for oil refinery operators.

All my backyard. Born & grew up in SoCal. So much has been learned about these areas since I last studied geology in 72.

San Georgonio PK is the highest point in the transverse ranges and southern California. San Antonio mountain is the highest point in the San Gabriel mountains. Cheers

I'm not sure I can take you seriously if you're making an error 40 seconds into the video. The image is of the Ojai region, with the Oxnard plain in the lower right, and Cuyama Valley in the upper left. Interstate 5 is not in the picture. San Antonio is not the tallest peak in the transverse range. San Gorgonio is ~ 1500ft higher. No mention of San Emidgio Mountains.

I enjoyed this presentation. Thank you!

Wonderful presentation! Thank you for your knowledge, and you are a delight to listen to as well!

I've been soaking up West Coast geology for well over a decade-and-a-half at this point, and having lived in the L.A. area as a child the mountain topography and earthquakes have always fascinated me. I was there for the Sylmar quake in 1971 and ever since then I've tried to absorb as much knowledge as I could about how CA and its mountain ranges came to be and how they continue to evolve. Excellent work and thank you. -- _From a non-student_

It's the Santa ClarITA Valley and Simi is pronounced like see-me.

I Love This! I have seen vids like this but you gave aaaaalllllll the detail. Thank you

Ms. Ford 'brea' means tar in spanish and La brea tar pits in LA is 30-35 miles away from Brea near Olinda in Fullerton. I am sure that there more than enough places could be named brea I have walked on southern california beaches and have some brea on my foot

Mt. San Gorgonio is higher than San Antonio Pk.

a most excellent video thank you

Did you mention that the Transverse Ranges / Santa Monica Mtns / Channel Islands moved north by about 20° from off the coast of San Diego and Orange counties while being rotated? Distance from San Diego plus 195 mile movement on San Andreas fault plus other movement… Rocks on San Miguel Island match in looks and geochemistry with rocks found in San Diego (Scripps, Mission Valley, Poway). Source was a volcano in northern Sonora Mexico, transported to coast in a large river system during the tropical Eocene. Channel Islands National Park website has videos showing rotation… the first paper showing rotation was published in 1979! Doheny’s first well was located in Los Angeles.

Are the Sierra Pelonas part of any of these ranges? Is it a separate range and if so, shouldn't they also be included in this list of transverse ranges?

Skipped right over Tehachapi.

This current youth established as educators forgot to listen to themselves!!!! If you were to add a musical note to the rythum of the tone of the voice it could put to sleep 😴.