Відео

Well done from someone who lives on the south side of the Santa Ann plateau. This area has extensive of rock compositions. Looking forward to more field trips!

I have a rock sample that looks just like that dacite, I wasnt sure until now, thanks

@11:18. When you say current. Do you mean water current or the land on the plate? I say this because water currents in that area change a bit from Winter (from north) vs Summer (South or south current). Basically I think.

Well, I had to stop by and say thanks for expanding my understanding of "pegmatitic" rock. Here I thought it had to do with a secondary injection of hot/high pressure material into a hot solidifying rock body, and that the insulation in that rock body allowed slow cooling and differential crystallization to occur... Any recommendations for further reading?

world class content

"Refuheeo"

20:26: Pretty apparent quarry cut into the hill

I had no idea that we had such nice columnar basalt in San Diego County ^^. Oh. Not basalt. I learned something. Now my head hurts, thanks a ton.

What book are you referencing in this video?

Thanks for sharing.

Espactaculare

01:10: What is with that pink formation with straight edges and a right angle to the south west? Is that an estimated, non-surveyed boundary???

I would like to see some formations in situ.

I believe semi-desert, but, ok.

Big thumbs up on this vid! But, you’re the kind of guy that surely needs a pocket protector 😂

Highway 14 has some remarkable road cuts for a long distance thanks

Excellent lesson, Sir

One time I took a rock from Georgia to Texas

Fossiliferous Mudflood layer 😅. It's definitely an interesting feeling seeing the Great Flood cause so much shifting of era's content to places above even to be finally seen by eyes. Tectonics.

Thank you for the video! I have lived in the area since 1970. We always called that place "The Quarry." It is a great place to hike to.

I lived in Altadena California it in Southern California. I am 70 now i was in third grade. They were grading some hills for new homes. I found fish fossils about six inches long . Even big bugs and leaves . Did a science project on it .

I have been to Catalina in my scuba classes . But I enjoyed the free diving most . You cover more area. Number one thing to do there .

I like that you do videos of the local (to me) areas. What type of rocks can be found here?

Fascinating!

I found a granodiorite rock in suncity, Menifee. I was so excited and I had fun identifying it with my rock encyclopedia 😄😄😄

My favorite road cut! Nothing like seeing rock compressed into a serpentine

I've lived in the IE and have often wondered about the Mountain/Hill ranges around, and their faultlines. The Hills along the 60 freeway (The Jurupa Hills), and the rock lines in them, I've always found interesting.

Local here, i live cloer to old town san juan and the creek running through there is my new rav roaming area. Id love to look for these rocks now that i cab identify them. I have no idea what rocks are around this area. But i enjoy looking at them in the creek

Where are the diamonds? Lol

Looks like it may have been much more hydorthermically active in the past, now just a few hot spots. Nice drone video.

Excellent work

Every time I drove though that area, I have pondered just how this geology was formed. Now I know. Thank you.

Your videos help ad a gold prospects but you are vague on locations

That is a really curious zone there, interesting minerals there!

It kills me that I worked for the USFS in Hemet and was surrounded by this geology but didn’t know about it yet…

I spend all day polishing rocks and here I am staying up late watching videos about rocks and wishing I had some of those too. I have a 🪨 problem. 😂

A great video but where is Green acres?

Years ago, I was driving by here and had to relieve myself in the worst possible way. I pulled off the road near there to do my business and I stepped on a rattle snake. Thankfully I had boots on and he did not penetrate them. He had a clear shot at my "full moon" if you know what I mean. I ran back to my car ASAP and never looked back..

I live in San C, 92672. What semi Precious minerals can be found in the streams immediately south of SC which empty in to the oceans near threastles beach? Thank you.

I like to think of SoCal as an area of crustal thinning, with magma oozing up through cracks in the crust. If you look at Panamint valley which is a long thin crack, you can see black mounds of basalt all along the length.

I can't tell you how tickled I am about discovering this video. I know this pit well, as I discovered it back around 1983 when I was an undergrad geology student at UC Riverside. I found out about it from a mine resources map with the County Geologist when I had an internship there and even led field trips for minerology class to the site. I'm glad to see it's still accessible, though a little disheartened by the graffiti (which there was none back then). My classmates and I were most impressed by the mega-zoning of the deposit with the massive quartz and feldspar dominating the core, followed by the shorl zone and the stellated mica exterior (I thought the mica was more phlogopite than biotite, but that's splitting hairs). I vaguely recall researching on the So. Pacific silica mine and there being an article of a second pit, a little further west of this, where they were pulling out shorl crystals the size of "telephone poles" but I never was able to verify it. Anyways, thank you for bringing back not only some great memories, but providing the excellent visuals of a place that I've only seen in my mind's eye for 40 years.

what type of volcano is that one? Also, its safe to say its an extinct volcano right now

I know this is over a year old now, but if you see this, I am curious if the pink streaking we see at the 8:28/8:29 mark is graffiti traces, or in the actual face? I ask because right at 9:00, near the lower-center of all that gravel, there is what looks like a dull pink crystal, maybe? It's just to the top left of the smaller grass clump, and also to the left of a fist-size gray rock. Maybe it's pink feldspar, or merely some litter. Thanks for the great video. What a wild place to explore. I would probably be climbing (or trying to!) up to those horizontal fissures we can see from your drone, and digging my hands in to find some nice gemmy....... scorpions.

Looks just like the rock formations at Mormon Rocks.

Thanks for the geology lesson(finally lol)in an area of SoCal I have been driving through or around for 60 years.

Plant notes: 0:18 _Cylindropuntia echinocarpa_ (silver cholla). 1:14 _Washingtonia filifera_ (CA fan palm). 6:23 Gasp. Deeply offended as a botanist that anyone would even consider that position.. 😂

Plant and lichen notes: 4:17 _Encelia farinosa_ (brittlebush) white plant in background, also lots at 14:16. 6:15 _Acarospora socialis_ - green lichen on rock, also lots at 8:06. 8:45 _Xanthoparmelia cumberlandia_ - white lichen on rocks, and lots at 15:04. 10:24 _Salvia mellifera_ (black sage) at left. 13:03 _Eriogonum fasciculatum_ (CA buckwheat) - at center.

As a botanist, people are always humored when I casually use the word "botanize". But it's a common and long-used word. Didn't know the geologists did the same grammatically!

I grew up hiking these hills and still live in the area. You gave the best explanation I have heard on the composition of minerals.

Novice here! Please forgive this ignorance of my question... Looking at that last rock, I would immediately assume it to be sedimentary because, in my simplistic mind, striping means layers, which means sedimentary. So, is there a quick and easy way to decipher sedimentary rocks from striped metamorphic rocks?