How beautiful! Thank you for taking us with you. Much to my regret I've never been able to go to Hawaii. Even if I could go now, my condition would not let me go to that beach. I've heard so much about it since I started studying geology by videos and books. What an amazing stratified cliff. The small cove is so dynamic. You and your students are blessed to be there. Just the kind of study trip I would have loved when I was young.

I was stationed in Hawaii and got to see the black sand beach on Maui. I also got to see the lunar-looking landscape in the saddle between Mauna Kea and Mauna Loa. Remarkable place.

@shawnwillsey

Жыл бұрын

Look for Mauna Kea video soon.

Very cool beach! Your videos are working...I guessed both the olivine and the tuff!👍🏻 The bedded cliffs are so beautifully sculpted by the sea. At 50,000 yo, I think these are some of the youngest formations I've seen with you, except for the new lava flows in Iceland, of course.😊 Enjoy Hawaii!

@shawnwillsey

Жыл бұрын

Strong work on your sleuthing skills. On to Iceland next week!

What a great benefit of the work you do that you get to travel to such cool places. I hope your students know how lucky they are to be able to enjoy field trips like that.

@shawnwillsey

Жыл бұрын

We were all fortunate to go and have the support of the college. A great learning experience for our students.

Excellent video, thanks for sharing! I found a small amount of green sand on Oahu (Kaneohe), on the Marine Corps Air Station North Beach, as best as I can remember - this was in the mid 1970's. Of course, at the time I had no idea why sand would be green... now I know!

Thx for sharing your excellent geo adventures. ✌🏻

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Man, Hawaii! Quite a field geology course. Back in the day when I was an undergrad & grad student, we alternated between the Florida Keys one year and the Grand Canyon the next. By vans, no airplanes involved! Hope you all had a great time and I'm sure the learned a lot.

My dream beach! It's even more cool than imagined. What fun to see it and know how much you and your students are enjoying sharing and learning. Thank you Shawn! 🌊🌋😊

I have been on the green beach in the Galapagos about 20 years ago. I went to see the birds, but the landscape was amazing also. I saw several dormant craters as well. The Galapagos are fascinating. I’ve never been to Hawaii. I didn’t know it has a green beach. Thanks, Shawn.

Thanks for that short snippet and have fun on the island.

Another amazing educational video, up close and right there ............... 313 like

that is so cool it blew my mind when you said that

Nicely done. There is a lot to digest in how we see yesterday's clues today

Well done! Spectacular place.

This is great! Thanks!

Hey Shawn, my girlfriend and I are amateur geology enthusiasts(thanks to your videos)and we live in Boise. I was wondering if there were any geologic oddities you’d recommend. We went and saw celebration park and had a blast!

@shawnwillsey

Жыл бұрын

Celebration Park is great. Check out Swan Falls area just upstream. Reynolds Creek road has some great geology too.

Very interesting!

Thanks!

That area looked very similar to where i live in Southwest Victoria Shawn 👌 Only missing the green sand & it's sometimes cooler than Hawaii 👍

It’s a long walk, best to keep close to the coastline on that trek for the cooling of the ocean.

yes, that was a Nice ass view to sign off to.

Hawaii crazy

Daimond Head has some olivine sand. In the sun it sparkles like Daimonds. That’s how that crater got it’s name.

I'm sitting here watching this and turning green with envy for not being there...!!

Damn Willsey, you do get around. Are the black beaches on Maui your next destination? I may be all wet, but are there pink beaches on Maui, too? Great video, btw Keep ‘em coming.

@shawnwillsey

Жыл бұрын

We saw some black sand beaches on Big Island too.

I'm thinking there is a small, green sand beach in Costa Rica not too far from Jaco....I could be wrong...I think it's a green tuff that is eroding.

👍

The green sand beaches in Guam and the Galapagos are also created by olivine sand.

The bedding has so many fine, beautifully horizontal layers! So many fine layers suggest a powerful, long-running (years? centuries?) geyser-like eruption. Might falling sea levels have allowed a small stream that formerly entered the ocean to fall instead into a large, stable magma chamber with a constricted (and thus geyser-like) throat?

@shawnwillsey

Жыл бұрын

Good thinking but the porous and permeable nature of the basalt and lack of soil development conspires against any streams on Mauna Loa. Despite all the rain, there is not one stream on its immense flanks.

@TerryBollinger

Жыл бұрын

@@shawnwillsey fascinating, thanks! - And a great example of the critical importance of “little” details :) when proposing/assessing/discarding initial wild (brainstorming) hypotheses. I'm intrigued, and may look for papers on the fine horizontal layering at that site, if they are accessible.

Would you please comment on the discontinuity seen at 5:55? What is the lighter colored material? Are there more and larger clasts in the material above the white band -- It looks like that to me. What is the material in the white band and how does it differ from the darker material(s)? What is the difference in the ages of the materials?

@shawnwillsey

Жыл бұрын

Hmmm. Might be a fine-grained interval that is less porous and permeable to groundwater flow and therefore stained with minerals contained in groundwater. Not sure totally. No obvious unconformities or breaks in deposition. This was all one, fairly continuous eruptive phase. Yes, there are layers with larger clasts above (pulses of higher explosivity).

How rapidly are those olivine grains dissolving? Olivine is fairly easily chemically weathered, since the silica tetrahedra are not covalently linked to each other (a nesosilicate).

@shawnwillsey

Жыл бұрын

Not sure what the rate would be and the deposit is fairly young.

Fr why did they painted SanS green 💀🗣️🔥

Green sands ☠️

1. The moon was formed from a collision of another planet with the Earth. 2. The moon is made of green cheese. 3. Ergo, the sand is made of green cheese. 😎 Your move, "geologist." Have fun out there, Shawn. Maybe you should get some t-shirts made that say, "I went to Hawaii, but all I got to do was look at rocks."

@shawnwillsey

Жыл бұрын

I'd buy that shirt.

I must be color blind because I don't see any green.

WHAT?????? YOU TAKE YOUR STUDENTS TO HAWAII???? Where do I enroll?????????

@shawnwillsey

Жыл бұрын

Ha. The Field Geology course runs each spring but the location varies. We do hit the Big Island every 3-5 years on average. Also have been to Iceland, Grand Canyon, Scotland, Yellowstone, etc.

Wait. You take your students to Hawai’i??? Obviously, I chose poorly in my education. We didn’t get field trips, we just sat in a lab.

@shawnwillsey

Жыл бұрын

Field Geology course for students who have taken GEOL 101 and did well. They learn about Hawaiian geology during semester then cap it off with a trip. Mind blowing experience for them. Many had never seen ocean or been on a plane.