A Geological Journey Through Oman

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Join James Cresswell for a geological journey through the mountains of northern Oman. The geology of Oman is spectacular, with exceptionally well-exposed rocks and unique, often breath-taking, scenery. Mountain ranges of 10,000ft+ altitude and deeply incised canyons, with turquoise-colored perennial streams, contrast with dry but golden sand deserts. Oman’s most famous geological feature is the world’s largest and best-exposed ophiolite complex, the Semail Ophiolite; in it, you can see rocks that were part of the mantle, you can touch the moho, and you can see sheeted dikes, incredible pillow basalts, and fossilized white and black smokers.
But that is not all! The structural geology is also superb, with the world’s largest mega sheath fold, many spectacular, photogenic sequences of folded marine sediments, thrust faults, and metamorphic rocks that formed in a subduction zone.
There are also many other extraordinary geological stories to be seen, including snowball earth deposits complete with cap carbonates, Ediacaran-aged stromatolites, and rare types of volcanic rock (such as kimberlites and carbonatites). In addition to all this, the country as a whole boasts great archaeology and several World Heritage Sites.

Опубликовано:

18 сен 2024

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Комментарии : 23

@peggieincolfaxca3818 2 года назад

Absolutely amazing !! Thank you!

@subinvarghese9260 2 года назад

I am feeling very much knowledgeable. I live in Oman and from past 3.5 years till date, i have been collecting and analyzing all kind of stones and have found lot of Fossils too. If you need any shipments of stones particularly from here. please do let me know. And James Cresswell Sir, I am basically a mechanical engineer and am very much interested in Geology too. If you have a spot and looking for a guide around for the same. count me in. Have a good day ahead. Oman is truly a natural wonder!

@RoySATX Год назад

Since the 70s I've spent many summers in Port Aransas, Texas and it seems every time I visit I gain new appreciation for the ecosystems of the Gulf. I remember as a teenager being a bit embarrassed whenever people from the Pacific or Atlantic coasts would show up, they always seemed to come from much more interesting places. Thankfully, however, I soon discovered it all depends on what one finds interesting and the gulf certainly hasn't run short of things to keep me interested, entertained, and educated. And thanks to this fantastic discussion I now have even more to keep me coming back to the gulf like a horse to a saltlick!

@carolusprasetyadi8093 Год назад

Thank you for amazing geological scenes and outcrop, I learned a lot from this amazing field trip👍

@GabrielNLaera Год назад

What a fabulous talk. I have just come back from a very short trip to Oman and this video helped me so much making sense of what I saw there. Brilliant.

@okboomer6201 Год назад

Thank you, wonderful presentation.

@rogerdudra178 Год назад

Greetings from the BIG SKY. I'd wager this is real interesting for a country gopher.

@joseangeltorresespinosa7997 Год назад

Felicidades, un buen video y el contenido geológico donde se puede ver de un buen ejemplo de secuencias conformadas por rocas en la corteza oceánica y del continente a detalle, en el entendimiento de la teoría de las placas Tectónicas en nuestro planeta, un buen saludo desde México DF.

@pauldavis1943 Год назад

Fascinating material but I could not help but feel like I was listening to Eric Idle and kept waiting for a Monty Python skit to emerge.

@AvanaVana 2 года назад

I believe the mid ocean ridge interpretation for the Semail ophiolite is now an outdated model, and that geochemistry supports a suprasubduction/forearc genesis for the ophiolite. PS, why does he read the word “diamictite” as “die-suh-meet”? The snowball period is the Cryogenian. I have spoken to Prof. Hoffman about the other Neoproterozoic glaciations and he is convinced that none of the others in the Tonian or Ediacaran were anything but regional. Also, amphibolites are NOT granulite-facies. Amphibolite-facies and granulite-facies are both high grade metamorphic facies, but granulite-facies is higher grade yet, and it is usually defined by its dryness, that is the water content has been removed due to the high grade metamorphism, whereas amphibolites by definition require water, as the mineral amphibole is a hydroxlated mineral.

@marksinger3067 Год назад

Do you ever go to the Pamir Knot where the great mountain chains twist out.?

@alexburke1899 2 года назад

I think those Ediacaran fossils around 22:45 are the bases of ocean biota and they’re missing the upper pieces that looked like a single leaf. The base kind of held them to the algae mats or sediment on ocean floor and they often just left the base when they got fossilized. I wonder if really early humans that lived in or passed through that area were happy to find that chert mound to make their stone tools and spear tips.

@daleeason9687 2 года назад

They also look similar to liquefaction poring out onto a surface during an earthquake. I saw similar on on a TV show about the earth and those were found in the mountains of western US or maybe Utah.

@AvanaVana 2 года назад

Yes, they are the holdfasts of arboreomorph and rangeomorph “avalonian biota” frond-like fossils. Which makes sense, as Avalonia was located relatively near the Arabian-Nubian shield during the Ediacaran.

@alexburke1899 2 года назад

@@daleeason9687 there’s some really amazing examples of liquefaction if you check out the town/city of New Madrid in Missouri on google earth. There’s some that are over 100 feet wide (maybe much bigger not sure how big they got) and still visible 200 years later. That fault seems to pop off every 500 years and will seriously mess up the Midwest next time it happens because the whole area is silt for hundreds of miles with no basement rock. Same liquefaction happened recently in that ChristChurch quake because that city was built on silt.

@glennquagmire1747 Год назад

Day of two Dr Seuss 🤣

@mistysowards7365 2 года назад

So you mean the earth warms and cools drastically naturally without all these nasty cars and trucks and cows ? Lol wow that has to deserve the Nobel....

@paleo1019 2 года назад

What a ignorant comment. It is not that Climate Change happens. It is the rate in which it happens and that is quickly. Not on the scale of millions or thousands of years but drastically changing over hundreds of years and decades due to high amounts of CO2 gases. Glaciers are melting faster, fauna and floria are decreadings and temperatures are getting warmer and the storms such as hurricanes, snow storms, and tornadoes are becoming more server. Learn how Cliamte Change works rather then looking stupid with the comment you posted here.

@conniead5206 Год назад

Yep. This warming period started, per current thinking, about 20,000 years ago. Give or take a few thousand years. I gather that less than 10,000 years Northern Africa was mostly wet. Maybe the warming was due to too many critters farting? After the dinosaurs were obliterated the planet lost their farts and things cooled a bit? Human activity since farming has probably sped things up and it looks like things may get warmer than for any period since critters started living on land. Satellite photos clearly show where water used to flow before when bipeds were still hunter gatherers.

@khaledabdulmalak Год назад

Oman is oil and gas country. In term of production Oman is far behind Saudi Arabia or UAE . It has barely one million baril/day.

@conniead5206 Год назад

🤣🤣🤣 I assume you have a thing against Oman. Besides not being relevant to the video, you should have only compared its oil output with an equivalent sized country. Chuck Saudi Arabia from that little list. Or divide it up into similar sized lots. I am sure there are parts of Saudi Arabia that, as yet anyway, they do not have any oil. Oil will always be needed, but not necessarily for transportation. If the dreamers actually come up with viable replacements for an energy source for oil. Oman can use solar, wind, and wave. Much of Saudi Arabia can not use wave. Saudi Arabia and the UAE are using solar more and more. I do not know about wind, but hopefully they are not using the huge bladed things most have. The blades seem to be made of crap that is not being recycled. I do not know whether it because it can not be or it is too expensive to do so. In both energy and money. Like with solar panels. “Green” is often not green.