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The Earth Story

@earthstory / earthstory.tumblr.com

This is the blog homepage of the Facebook group "The Earth Story" (Click here to visit our Facebook group). “The Earth Story” are group of volunteers with backgrounds throughout the Earth Sciences. We cover all Earth sciences - oceanography, climatology, geology, geophysics and much, much more. Our articles combine the latest research, stunning photography, and basic knowledge of geosciences, and are written for everyone!
We hope you find us to be a unique home for learning about the Earth sciences, and we hope you enjoy!
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The ‘eight thousanders’ In mountaineering terminology the expression ‘eight thousanders’ is used to denote the 14 highest mountains in the world, all of them rising at least 8,000 metres above sea level (26,247feet). They form the roof of the world and are all situated in Asia, in the Himalaya and Karakorum ranges.

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natgeotravel
Video by @Renan_Ozturk | Basecamp on the north side of #Everest at 17.5k feet - I had never felt the pull of this mountain or wanted to climb it much at all until arriving here with such a soulful team. The iconic shape and presence of the peak from this vantage point is a magnet for exploration, all the lines of the valleys pulling you upward. #sirensong #everestmystery  Join me @Renan_Ozturk for more images from the roof of the world
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roam
As a team, we made our way from Basecamp to Advanced Basecamp with a stop in between at Interim Camp. Maneuvering from Interim Camp to ABC requires us to hike up the “Miracle Highway”, seen here in Keith’s video. This upheaval of land is what makes it possible to pass through an otherwise dangerous landscape of unstable ice pinnacles, thus giving it the name of a Miracle Highway.⁣⠀
Have you watched the third episode 'The Line'? Check out the Link in our Bio to watch.⁣⠀
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The Valley of Silence Nestled below the western face of Chomolungma (The Holy Mother in Tibetan), the tallest peak on Earth, is a beautiful glacial valley also known as the Western Cwm (a Welsh word for a glacial bowl shaped valley, aka a cirque). It was given its poetic name by George Mallory in 1921 on a reconnaissance mission for what would prove to be an ill fated summit attempt. Accessed via the Khumbu icefall, it is on the route from base camp towards the mountain. Accessed using a chopper as the airpano team did (after repeated attempts were foiled by weather) one gets a very different view, as revealed in the accompanying photo. The valley has a warm microclimate as the surrounding snowy bowls focus the sun's rays into the cwm, so despite ranging from 6,000 to 6,800 metres, it can get as warm as 35 Celsius, a bane for struggling mountaineers dressed for the harsher conditions (down to 60 below) that prevail at the roof of the world. Loz Image credit: airpano.com

Source: facebook.com
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ORiginal caption

A time-lapse journey from the roof of the world.

3,408 still images stitched together to portray a single day in the majestic Himalayas.

The story behind the images:

Some of us are vocal and social when it comes to our pain, others suffer silently and quietly like warriors waiting out the storms of life. As I assembled these images, I was flooded with memories I had tucked away deep in the vault of my past, images in some cases I am only seeing for the first time after almost 5 years.

2014 and 2015 were devastating years on Mt. Everest with the highest recorded number of fatalities. I was there for both seasons. I got lucky in 2014 and was trapped above the avalanche that claimed the lives of 16 Sherpa men. In 2015 I was hit directly by the tidal wave of snow that took out EBC that claimed the lives of over 18 people. I was again, fortunate to survive. It took a long time to sort this all out emotionally and psychologically. I took a break for a few years while I constructed a new narrative and quietly dealt with the post traumatic stress. Leaving the footage alone on my hard drives was a part of that strategy.

You’d never know by watching the imagery, in particular the time lapse-pan at basecamp (1:35) by day with the low hanging clouds, what was really going on during that time. Focusing on the beauty rather than the devastation was the only way I knew how to deal with the situation at the time.

A bit of truth from the archives.

This collection is part of the unseen imagery from 2014-2015 seasons.

Assisted by my great friend, Pasang Kaji Sherpa.

Special thank you to Kancha Sherpa and his team of porters who tolerated and supported my late night camera antics in a world above the clouds. This is as much my hard work as it theirs. Namaste.

Hope you enjoy it. Be sure to watch in 4K.

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The strange geology of Mount Everest

Viewed on its north face as in this image, the peak of Mount Everest looks different from rocks below it. The pale, mostly-snow-covered layer is known colloquially as Everest’s Yellow Band. On top of that is a darker layer that is covered by thinner-bedded units.

This sequence describes one of Geology’s most commonly told stories. At the top of Mount Everest,the highest mountain on Earth, sits a sequence of bedded limestones, formed beneath the ocean over 450 million years ago in the Ordovician. Rocks deposited in the ocean sit at the top of Earth’s tallest peak. There are trilobites up there.

The story of how these rocks wound up in this relationship is a complicated tale. The presence of sediments at the top of Mount Everest seems curious enough, but what fascinates me is that the sediments sit on top of igneous and metamorphic rocks in the yellow band. Rocks from the ocean sit on top of crustal rocks exposed right on the face of this mountain. How did the limestones get on top of these rocks?

The structural complexity originates in the great stresses created by the collision between India and Asia. Geologists have sampled the metamorphic rocks exposed on Mount Everest and found that only a few million years ago they sat buried tens of kilometers deep inside Earth’s crust, smashed within the Tibetan Plateau.

Between the limestones and the metamorphic rocks there is a fault known as the South Tibetan Detachment or the Qomolungma detachment. A detachment fault is a normal fault; the kind of fault commonly found when Earth’s crust is pulled apart, not smashed together.

The best metaphor for this process I’ve heard is nicknamed “toothpaste tectonics”. The warm metamorphic rocks in the crust within the Tibetan plateau are at such temperatures and pressures that they are able to flow. As the rocks of the highest Himalaya are eroded, the warm rocks inside Tibet flow outward to take their space, squeezed outward through a channel like toothpaste being squeezed out a tube.

The metamorphic rocks are pushed out between two faults, a thrust fault at the bottom of the channel that separates the deep channel from shallow rocks on the Indian plate and a normal fault between the metamorphic rocks and oceanic limestones at the top.

That great normal fault, which has seen great volumes of rock flowing past it, outcrops on the face of Everest and defines the major change in rock type on the mountain.

-JBB

Source: facebook.com
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bharat_verma
Sunset like this is dope!!! Look how the snow covered mountain looks like when the sunlight is on it, the change in color from gold to red 😎 you need to be lucky enough to get this view specially in evening when the mountains are covered with clouds. .
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Location 📍Goraksheep, last village for Everest base camp.
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Aerial video captures the trip up to Everest Base Camp through the high Himalayas. Original caption:

A great introductory lodge trek in the Everest Region that takes you to the base of the world's highest mountain Mount Everest. Trek along sensational Himalayan mountain views and experience Sherpa mountain culture. Detailed itinerary on https://trekkingtopnepal.com/trip/everest-base-camp-khumbu-icefall-trek/
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