It's fantastic to take a sidewise look at rock layers representing millions of years of time and incidents of uplift, seems a little similar to being able to look at tree rings and see the changes in climate over decades or hundreds of years. Thanks for taking us to another place with such amazing geology.

Anza-Borrego was my best birding trip with 27 new bird species for this easterner. Had a friendly chat with a road-runner who didn't want the food I offered!

In the 90s, 30 odd goths from San Diego hiked Anza Borrego. I still have all our moody black and white photos from the day. Such a beautiful area, one of my favorites in the world :)

Wow Professor , I have traveled through this canyon many times and wished I had a geologist with me, this video made it happen, in a way. I'm heading to the Cargos Muchachos this weekend, will be in a wash called the Araz. Also spectacular. Thanks so much for the video, cant wait for part two.

I grew up in east county San Diego and used to trek out to Anza Borrego and many other east county San Diego spots. It is what opened my interests in Geology and Rockhounding. It would be way cool if you did a segment on the pegmatite formations in the Pala / Hemet areas, down to Jacumba. There is very old history of gem mining in the area, tourmaline mostly, but other gems as well. Many of the mines are still active and being redeveloped by the Gems of Pala team.

“Moonwalking across the wash…”🤣. Thanks for the slickenlines and sides!

My favorite thing at Anza-Borrego is (I like to do it as a multi-day journey) a trip that starts at Canyon Sin Nombre (visit the slot canyon there) goes up Arroyo Tapiado (Mud Caves) and down Diablo drop off into upper Fish Creek, then visit Sandstone Canyon, the mud palisades, and split mountain on the way out.

Well THAT is showy-- I was gone on the roadrunners and lizards and ocotillos blooming and dodging cholla too much to even know about this showy jaw-dropping wall-

This area is especially gorgeous after a light rain with the absorption of water into the rocks. They really show some spectacular coloration.

I was there in November with my geology class… that place is gorgeous and super friendly campers

This is fantastic! A geological wonderland indeed, thanks for sharing with us!

You can see the surface corrugations in the line down that strike-slip fault. Thanks Shawn. 🙂

Geeeez!!!! (This was my first Discover-Alone place, very sentimental. For birds, pre-geology.) LOVE the layering, colors, textbook faulting. On my list to visit again. Exciting stuff! ❤

Thanks for covering one of my favorite places on the planet.

It’s looks very cracked and floating but massive. Some history there! I always see things and face too just like in the clouds. Thanks for this educational dope vid Shawn 👍🏻

I've been there as a kid!

I spent my very first night in California here! Awesome! One of my most favourite places on earth, that and the Mt Lassen area and my own Jurassic Coast in Dorset UK where I live ! Thank you for this video - I want to come back 😍

I did my final geology field camp in this area. It's really awesome as far as geology goes. Thanks for the great video and commentary.

Love it there! Every time I visit I am pulled in by the rocks! Interesting energy. I have a couple of geology books specific to the area. Great to have your on site analysis! Thanks😊

Great location. Just beautiful to see all those layers and faults. Thanks for showing us.

I lived in Southern California years ago and was amazed at the Geology there. Listening to you naming certain faults brings back memories. Thank you.

This Marylander is so envious of all of you who live in or near this area. I love the colors and shapes and thank Shawn for taking us here.

A fantastic video Prof. I stumbled upon a random video three months ago about the magma intrusion in Grindavik, knowing absolutely zilch about geology. I have learnt so much since, just by catching up on your back catalogue.

This is so awesome to see how different types of events that create these folds and mini faults. It certainly helps us to understand how all this works . Thank you again

Finally a person that can explain what I see in my Anza Borrego Desert canyon hikes. I think a binge watch is in order here on the Anza Borrego Desert. Thank you. Cheers!

For close to a decade now our annual migration destination from Pacific Northwest winter has been the Anza Borrego. It’s a treat, and an education to see familiar canyon walls through your eyes. Looking forward to the next installments. I’ve also been bookmarking unfamiliar locations you have investigated for future visits.

That was really awesome. It's difficult to get a good feel for the size of those strata. But the different layers of sediment and minor faults are so fascinating! Looks like a fun trip.

Having grown up in San Diego County I spent a good bit of time looking for Reptiles in Borrego as a kid. Years later, I surveyed much of the area surrounding the park for prairie falcons nesting on cliffs. As I recall, most of the minor faulting I noticed was sinistral rather than dextral, as you found, but that was fifty years ago and I may be misremembering.

Thx Prof ✌🏻 enjoyed your excellent geo-ed adventure.

❤Amazing vídeo from you great. America Teacher. I love the way you made all your vídeo; I really love to hear the sounds. From o little Hammer.🛠🔨🔨🔨❤🇺🇸❤. As much as I see your video, I do love your geology classes. Thank dear teacher SHAMN WILLSEY. You are the best.🤗💚📌🖍📗👏

Thanks!

Very interesting! I camped at Anza borrego years ago with a group. It is lovely for winter camping, and has lots of great hikes. Wish I’d had a geologist tour guide!

Great eye! I would never see the faults etc but when you point them out they’re amazing! Thank you again!

Amazing rocks thank you Shawn

I wasn’t surprised to see the transform faults in these young rocks as the rock movements have occurred in the last few million years as the Sea of Cortez rift has appeared. But I was quite surprised to see the normal faults. Further north near the San Andreas fault there is a lot of reverse faulting from the San Gabriel and San Bernardino uplifts and to the north. I don’t get to the Anza area much and I didn’t quickly recall how close it is to the rift zone just to the east. The change from compression to expansion changes in a fairly short range in Southern California. I’m from back east where the geology is hidden. The Western geology is amazing to me. The last few years I have had a chance to drive across the Garlock fault. It’s relatively hidden and every every transit I see it more clearly. Thanks for the video. 😊

I am learning so much from you!

Definitely will be reviewing this video before I head south from OC to explore - maybe for spring bloom. Thank you! :)

Amazing.

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THANK YOU!

I am so pleased you are exploring and doing videos about S. California. This is my neck of the woods and your videos are helping me understand local geology. Your video about Gargoyle Canyon was fantastic. I learned a lot. Thank you!

Awesome explanation. Thank you

Very interesting to learn more of this area. I like learning more about faults. Far different from the PNW.

While you’re there in socal and east San Diego is my neck of the woods. The hills from the boarder from campo through Alpine, descanso, Julian, Ramona, on up. There loaded with large granite boulders. I can’t figure out how did it get like that? It looks like boulders the size up to a house are just peppered everywhere.

So many geologically fascinating areas in southern California. If these are Miocene deposits, as you indicated early in this video, then this material would have been deposited roughly 50km to the south of where they are today. My question is whether this material was then in a shallow water environment, at the northern end of a young Gulf of California.

I was raised there.

These faults you're finding are actually off-shoots or cracks caused by bigger events of the San Felipe fault which is mainly located at the entry of fish creek canyon. Nice video dude.

Our winter house is to the west of there in the most SW part of the park; if you look on map you can probably figure out where we are. We've been coming to Anza Borrego since the late 70s so we have explored a lot but it's always nice to learn more. You probably posting this far after you were here, but if not contact us and we'll show you our part of AB.

If I may suggest an interesting area to see, Paria Utah. I 4 wheeled in there in the 90s. Remains of the set from “outlaw Josie Whales” set were still there.

Anza-Borrego *Desert* State Park. Almost my home territory. I live uphill in Anza (not "Anza-Borrego") at almost 4,000 ft elev.

You were checking out my old stomping grounds.

1ST. and glad to be here.

Can you give us a Death Valley video series? The rocks and geology are so bare and dramatic, would love to have them described beyond “wow!look at that red and orange and green bit over there”. ** isn’t it cool that these California desert parks can be so very desolate, but you can still find such beauty and interest?

You need to come back for a super bloom.

What is the difference between a "normal fault" and a "reverse fault"? This old geology text I have ("Structure of the Earth" by S. P. Clark Jr, 1971) has a diagram illustrating the two but one looks to be the mirror image of the other. In the normal fault, the right side moves up and the left side down. In the reverse fault, the right side moves down and the left up.

We are between the Elsinore and San Jacinto fault zones and in an active but smaller sized Earthquake prone area. The outdoor camping is great there or so I heard.

As far as I know, the Elsinore fault is not part of the San Andreas fault system. While It basically parallels the San Andreas, it extends to the South down into Mexico. On the North end it splits with one of the branches becoming the Whittier fault. I live within walking distance (less than 2 miles) of this fault as it travels down the West side of our city.

Pilgimage to the Mecca Anticline.

❤

Have you seen the "moving quick sand"(between where this video is and the salton sea)?? Any thoughts on it's path, origin, destination?

At 6:56 your looking up at Dum dum want some gum gum rock!

Thanks for pointing out the faults. Part of the cliff is going up and part is going down. What is causing that?

Can you put dates to the different layers? How much geological time are we looking at from your “ground level” to the top layer? Thank you.

Where did the energy come from to generate these faults?

Still love your content, but missing out on so much details, because it's always at 1080p for example i could not see any rock polishing. I have plenty of 4k action cams you can record atleast 1440p if you're worried about slow upload speed & I would gladly send you one for free.

What causes the abrubt changes? What causes the alternation of layers, as opposed to just a change? Please pick some layers and tell us how much time it represents.

Strike Slip Faults

It's not "Ahnza". It's like "An-za". I live here and hike here with my dogs almost daily. I've been here eight years and feel like I've barely seen just a bit. And FYI...the Jacinto Fault is directly under you right where you are there!!! There are a lot of fallen rocks in the area from the constant jolts. 😎

How much of the rock and sedimentary layers were created by the melting of the last glaciers when there may have been a catastrophic melting of the North American ice sheets?

If the slicken lines reflect "rubbing" by another surface, where did that surface go ? Excellent presentation, thanks very much. don't hurt yourself climbing.

It's not a geologists fault they are fascinated by terrorferma the rock we stand on for it tells the story of earth in its entirety we also can learn about what to expect in the far future too because the processes persists of change of our dynamic planet?

This time, it is not easy to understand!

How could you tell that the “normal faults” weren’t strike slip faults.

The fault you are describing at 5:59 Why does it seem to homogenize toward it's top?

I have camped there many times and different locations. I still have great memories of the area.

Thanks!