The Odd and Interesting Geology of the Henry Mountains Laccolith at Trachyte Mesa in Southern Utah 

Why would I do that, most of geological theory is 100% in correct. Here I debunked volcanic Intrusions for the Menticides. it never was igneous intrusive basalt! it would be the same hardness on Mohs scale... Geological theory of volcanic intrusion like I show is complete nonsense! Did anyone stop to think? NO! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-fhxAzdMeZ7M.html

Win-win! It's all about a few buzzwords and convincing salesmanship. 😉

We ARE smarter because of Shawn's videos!

Lot of sites of siliceous nodules after barite indicating sea floor, maybe shallow lagoonal structures in the Mountain flanks, not identified elsewhere in the West.

Passion x knowledge

You are most welcome. Thanks for the compliment. Glad this was helpful.

This is rattlesnake habitat. I spooked three of them within four days of hiking around Mt. Hillers. I've never seen or heard one anywhere else, in spite of hundreds of miles of hiking in SW Utah over the years. Beware of rattlers!

@@toughenupfluffy7294 You forgot the Dolores Triangle sighting when you were doing field work there. :)

Thanks. Much appreciated.

Glad it was helpful!

That's Sad. I grew up in Provo and have been all over Utah, and the USA. The Henry's were the last Mountain Range to be mapped in the USA.

I love hiking the east side of the sangres, on the slopey east of crestone peak down to the backside of mt. Blanca and the Huerfano Valley. I stop in westcliffe every trip to stock up!

Trachytes are not just lava, but marine lava with a lot of sodium and potassium. Would infer the feldspar is albite.

What about the San Juan's in Colorado, the abahos are south but I don't know about east of Lasalle. And Navaho Mt in north AZ, are the conected,?

@@jeffbybee5207 the San Juan’s are volcanic surface eruptions, the Abahos and Navajo Mountain are laccoliths, the later is still covered by overlying sedimentary layers.

I agree.

Awesome! Thank you!

@@shawnwillsey I live in Boise and am looking forward to visiting Craters of the Moon and other sites this summer with my two grandboys. We'll watch some of your videos before we head out :-)

@@jameskrause4606 Great. Have a fun adventure.

Thank you! Cheers!

Glad you enjoyed it

Look for a few more dropping soon.

You bet. Enjoy your trip

Excelente, amigo. Best advice is to just be yourself and find the style that works for you.

It is important that you are are providing your videos in Spanish. Yes many people in the US are bilingual. However, the understanding of concepts is easier in one's primary language.

I agree with Anne5440 that it is important you provide your videos in Spanish. Many Spanish speakers, both in the US and through the Americas, are NOT bilingual, and there is very little content about geology I have found for them. Though I grew up in central Idaho and have hiked all over Idaho and Utah (and remember seeing the Henry's for the first time up close from Capital Reef like 30 years ago--stunning), it is only recently that so much content about the geology of the Western US is becoming so accessible from people like Shawn and Nick Zentner. (I'd love to spend a week with both/either of them, hiking or driving anywhere!) I now live in Puerto Vallarta, Mexico, next to a huge batholith (that reminds me of the Idaho batholith) called the Sierra Madre Del Sur. Going up the river canyons into the Sierra Madre is like walking up the slot canyons in Zion, only everything is grey and igneous--mostly granite, but basalt and gneiss in places--so far as I, a non geologist, can tell. I have tried and tried to find video content, or any content really-- in Spanish or English--about the fascinating geology all around this area, which has lots of tourists--and there isn't any--or none that gets into any detail. There is an internationally acclaimed botanical garden on the Rio Horcones 30 minutes south of Vallarta---so much richness about the flora and fauna and information in these gardens--but NOTHING about the geology of the fascinating landscape I have been able to find. So if you are a geologist who makes videos, y si hablas español, be proud to be so lucky because you will be doing a huge service for thousands of interested people, because the huge world of Spanish speakers has very little access to content like what Shawn and others are providing, or books such as those Shawn has written or helped write.

Y, si hagas or produces videos de la geología de cualquier lugar en español, me gustaría mucho verlos!

@@bingyoung3228 Tengo algunos vídeos de campo en español.

Hit me up with some of the questions you have about the Kolob area. I'll be down that way later this year so maybe I can hit that area.

Also, I wanted to ask : what is the relationship between the Henry Mountains and the Little Rockies?

The Little Rockies in Montana?

Great news all around. I'm sure you will enjoy my other existing videos plus the new ones to come. Thanks for watching and learning with me.

Very large and juicy.

Not in this area.

No quartzite was observed here or elsewhere (based on published literature) which is interpreted as lower magma temps and rapid cooling rates.

@@shawnwillsey Thanks

Yes which is a why a visit on a chilly March day was fine with me.

@@shawnwillsey I was wondering if the composition of the rock in the dikes is identical to the rock in the mountains/laccolith.

@@MartinReiter143 It is as far as I understand. Little variation overall.

GPS location is in video description. If you drive UT highway 276 south from its intersection with US 95, you will be able to access these shallow intrusive rocks at several locations. My video is from Trachyte Mesa.

A laccolith is a type of pluton that is concordant (meaning that it does not cut across rock layers (for most part) and domes overlying rocks.

Yes. Sedimentary rocks are about 280 to 130 million years old. Intrusion was only about 25-30 million years ago.

Groundwater leached out iron oxide cement around grains in the Page area (and others) such that sandstone is more white than red. Happens with the Navajo sandstone as well in places.

@@shawnwillsey awesome. 😎 I appreciate the response.

I've improved a bit but still working on this. Too much excitement I suppose. Thanks.

The mountains in the background are the Henry Mountains which formed by intrusion of magma and doming of overlying sedimentary rocks. See the illustration I show in the video.

Watched again and see where I missed the description. It’s even more amazing to think of the massive amount of intrusion to force the mountains up.

Boulder Mountain is capped by basalt lava flows and is most definitely not a laccolith. I’d have to look into it more to give more details.

Yes, Table Mountain is another spectacular feature at the NW end of the Henry Mtns. It is not a true laccolith but a bysmalith, an intrusion that has been uplifted by faults along its margin. This is why Table Mountain has such a steep perimeter, especially along its western and northern margin.

I'll be out that way in the fall. Let me know if there is a particular location.

These are some topics I'm interested in if you happen to make a video of the Sierra Nevada mountains while you're over there. 1. Is the mountain range still growing. 2. How fast is the mountain range growing if it happens to be growing. 3. If the Sierra Nevada mountains are still growing, how much longer will they continue to do so? 4. why the southern portion of the Sierra Nevada is taller than the northern portion. 5. How the mountain range got so tall. 6. If the Sierra Nevada mountains were taller at one point in time? 7. How do the Sierra Nevada mountains relate to Basin and Range extension? 8. How the Sierra Nevada Mountain range come into existence. 9. why are the Sierra Nevada mountains steeper on the east face when compared to the west face of the range. 10. The geology behind lake Tahoe. 11. the geology behind Yosemite. 12. What does the future hold for the Sierra Nevada mountains? Thank you so much for responding. It means a lot to me since I'm really intrigued by the geology of the Sierra Nevada mountains.

They aren't classic columns but definitely joints, likely caused by magma cooling.

Yes, I had hoped our travel adventure would take us over toward Capitol Reef and the Waterpocket Fold but it didn't work out. I'll try to visit there this fall.

It can cause metamorphism depending on how drastic the change. Technically, if new minerals are crystallized along this intrusive contact, then it would be considered contact metamorphism. Sometimes, the change is less marked with no crystallization but a color change of host material.

GPS location is given under video description.

It was cold and windy when I was there so I was not concerned. Otherwise, watch were you put your feet. Snakes are much more of a perceived than real risk with basic common sense.

It does resemble one in shape, but its an eroded hill of sedimentary rock.

Too cold on this particular day.

Humans incredibly short timespan is the main obstacle. Recorded human history only goes back a few thousand years, not nearly long enough (or geographically widespread) to have recorded most geologic events. Plus this particular feature (a laccolith) formed underground and has only been exposed at the surface due to extensive erosion.