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rock-swag-tournament · 1 year

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Mineral Swag Round 1: The Poll Maker's Favorites

More information under the cut (this is a long one, I love these minerals!)

Garnet and Peridot. These are literally my two favorite minerals and here I am pitting them against each other in round one. But it must be done. Their vibes are too similar for them to be paired with any other mineral.

Garnet is #1 on my list. She can be red or orange or green. The most well-known of the garnet species is probably pyrope garnet. She’s the one with that classic deep red color associated with garnet! (For more information about mineral species and what they are and why they form, see when I talk about olivine further down).

The picture above the poll is an almandine garnet and it’s probably my favorite garnet sample of ALL TIME. Those garnet crystals formed like that naturally. Someone did NOT go in and cut that up. They removed some of the schist (the rock matrix that the garnet crystals are stuck in) but garnet just looks like that naturally, babey! Garnet naturally forms as a dodecahedron.

I also love that garnet forms during the metamorphosis of rocks! Shale is a dull, mostly boring-to-look-at rock made of mud and clay. When it experiences high enough pressures and temperatures, it is metamorphosed into schist, a delightfully shinny slippery rock that sometimes has big old garnets in it, as shown above! The rock was smooth and boring, then the minerals recrystallized until it became a weirdly chunky rock!

Another fun fact about garnet has to do with petrographic microscopes and optical mineralogy. Geologists can look at rocks on an outcrop (think big rocks and cliff faces on the side of the road) or in their hand. But to see the minute details of specific minerals, we use thin sections of rock. Thin sections are exactly what they sound like! Super super super thin (30 microns, or 0.003 centimeters thick) slices of rock. Geology students can make them! But if you want good quality ones, you usually send them to a company.

Anyway, when rocks are sliced that thin you can shine light through the minerals (using a petrographic microscope). Minerals have properties you can see and test when you’re holding a sample, but they also have optical properties when you shine plane polarized light (PPL) or cross polarized light (XPL) through it that can be used to identify it. One of garnet’s optical properties is that it looks clear in PPL, but completely dark in XPL and I think that’s a super neat trick.

The same sample in PPL (left) and XPL (right). Pictures from here, annotated by me.

Maybe if people are super geeked about petrology and mineralogy, I’ll talk about it more in another post, but this post is already long and I do not remember THAT much about mineralogy to write a concise summary about any of it!

Now for my other favorite mineral, olivine, aka peridot. Peridot and olivine are the same mineral, but peridot is gem-quality olivine.

Olivine is the real forbidden rock candy. Most of the time it forms these little crunchy looking crystals instead of big impressive crystals like garnet. But it’s such a brilliant green color, and the texture is really very fun.

As for its geologic significance, most of the mantle is olivine! The gooey plastic rock that the tectonic plates float on is mostly this cool green rock. Also, olivine is a great example to use when learning about mineral species. Taken from the preliminary polls:

Olivine has two prominent "end members" or mineral species. The chemical formula for olivine is

(SOMETHING)2Si2O6

That (SOMETHING) is almost always magnesium (Mg) or iron (Fe) or some combination of the two. If an olivine sample has ALL magnesium in that spot, it is known as forsterite (one of the olivine "end members"). If it has ALL iron in that spot, it is known as fayalite (the other end member). And, of course, because nature is not perfect, there can be an olivine with any combination of mangesium and iron (between these two end members).

At their core, fayalite and forsterite are both olivine. They are both silicate minerals (see the part of their formula with Si) and regardless of whether they have magnesium or iron, their structure is the same. They have silicate tetrahedrons (the 3D shape that the molecule Si2O6 makes - think a d4 in D&D) bonded with some iron or magnesium atoms.

In this case, whether you vote garnet or olivine, you have chosen a wonderfully amazing mineral.

#mineral swag round 1 #olivine #garnet #peridot

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the-technicolor-whiscash · 2 months

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holy SHIT I just found a webpage that has petrographic analysis of lunar rocks and dude they have xpl thin sections

I am in love god look at these beauties

Might need to break out the ol petrology textbook and spend some time with these

#the whiscash administration

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lesbianroland · 1 year

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the main difference between a mineralogist and a petrographer is that the petrographer will tell you they're a petrographer and not a mineralogist the second you step into the room

#th.txt

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valassky-archived · 2 years

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Feldspar, Garnet, Quartz, Olivine, Biotite, and Calcite under a petrographic microscope

#zpráva

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athingofvikings · 2 years

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A Thing Of Vikings Chapter 121: Level Foundations

Chapter 121: Level Foundations

Supernova 1054

Constellation: Taurus

Distance: 6.5 kilolight-years

Remnant: Nebula

SN 1054 is a supernova that was first observed on 4 July AD 1054, and remained visible until c. 6 April 1056. The event was recorded in numerous contemporary astronomical sources, including Zhōngguó, Nippon, Islamic, and European, as well as in petrographs associated with the Hisatsinom culture. Furthermore, it is historically noteworthy and significant as being one of the instigating factors in Magni Hiccupsson House Haddock’s initial astronomical synlengra experiments, which began a new age of observational astronomy in the coming decades and centuries. One aspect of these studies is that the remnants of SN 1054 have been extensively tracked, with new and increasingly larger synlengra constructed as the supernova remnants faded over time. The remnants of SN 1054, known as the Magni Nebula, consists of debris ejected during the explosion, and is located in the sky near the star Zeta Tauri, with the core of the exploding star having formed a pulsar, called the Magni Pulsar. Due to the centuries of close examination, and as one of the few Galactic supernovae where the date of the explosion is well-known, the nebula and the pulsar it contains are some of the most well-studied astronomical objects outside of the solar system, with the two objects being the most luminous of their types in their respective categories.

[…]

Cultural Significance:

The supernova was received as a supernatural portent in the immediate aftermath of the wedding of Tuffnut Thicknutsson House Thorston and his first wife, Princess Mór of the Isle of Mann, performed on 3 July AD 1054. The pair had attempted to wed in ceremony repeatedly over the preceding eleven years as a betrothed couple, despite technically qualifying as a common law marriage between their extended cohabitation and the births of five children in that time.

According to contemporary sources, the wagering on what might interrupt the wedding on this latest attempt included “another war,” “The Apocalypse,” volcanic eruptions, the blotting out of the sun by an eclipse, and several other types of natural and supernatural disasters, with the longest odds on offer given to the nuptials going through successfully. Several primary sources from the subsequent court cases indicate that the odds were universally set in excess of a hundred to one by different odds-makers, with the highest value being 400:1 against the ceremony going through without incident.

When the supernova was observed the day after the wedding ceremony had taken place, several odds-makers claimed it as a portent and attempted to avoid making their ruinous payments to the winning wagerers. This resulted in a number of lawsuits, the proceedings of which have been portrayed in dramatic and educational productions repeatedly over the ensuing centuries…

—SN 1054 (n.d.). In Wikikenna. Retrieved 9 March, 1852

AO3 Link

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cosmic-tuna · 3 months

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another video of the Circles TM

#mineralogy #petrographic microscope #geology #tuna talks geology

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tvobsessedcarl-blog · 2 years

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Manifest - S1E14 “Upgrade”

M: “Zeke, the petrograph- that’s about you and me. You’ve got to start trusting me. I’ve been having these callings for weeks. It wants us to accomplish something...together. I just got to figure out what.”

Z: “Okay. I fold. Thank you.”

#manifest netflix #michaela stone #zeke landon #zeke x michaela #michaela x zeke #zekaela #melissa roxburgh #matt long

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araminakilla · 2 years

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Day 13: All the characters and their (plus) information

This information was possible to obtain thanks to the web page La Higuera:

Main Characters

Tadeo Jones

He is a bit tired of being told that the archaeologist's main tools are patience and brushes. He didn't need brushes to find the lost city of Paititi or the tomb of King Midas and he doesn't take well that his companions continue to look at him like a novice. So it's time to launch into a new adventure!

Jeff

Is Tadeo's best friend. He is a dog who loves his cookies and playing with bones from archaeological remains. He is a free spirit and nothing commands him respect... but he is an endearing pooch.

Sara Lavroff

Is a born leader. As a brilliant archaeologist and intrepid adventurer, she knows that trusting the team is vital and that's why she wants Tadeo with her, even if it means she has to save her partner from more than one pinch. She deserves a movie for so much dedication and patience!

Belzoni

He is Sara's winged companion, a parrot who does not speak, but who knows very well what he says. He only has a couple of flaws, he has a very short temper and a bad habit of stealing Ryu's fajitas. Nobody is perfect!

Mummy

Inseparable from Tadeo since the first film, he discovers the advantages of the Internet, telecommuting and compulsive online shopping...But what he enjoys the most is having adventures with his bro!

Ammyt

The head of a crocodile, the body of a lion, and the butt of a hippopotamus... with wings! Although he is like a puppy, he is the typical creature of the Egyptian underworld that breathes fire from his mouth and loves to play with people's heads. So... be careful, it bites!

Beljeff / Jefzoni

Two extremes that are joined... by an Egyptian curse by exchanging their bodies when they sneeze. A symbiosis that can fool a pharaoh.

Pollo (Chicken)

Mummy and Jean Paul's new best friend... his whistling voice gives him away.

Ra Amon Ah (Ramona?)

She claims to be a pharaoh, but we haven't found any trace of her in any dynasty. She says that her name is written with pauses, but between so many pauses she forgot about being a pharaoh. She thinks she is better than Mummy, but the only difference they have is the quality of their bandages. Beware she is loose-tongued and easy on the whip!

"Cool" Archaeologists

Three archaeologists -Bryan, Ryu and Ann- who are so perfect they're a little creepy. So impeccable and meticulous that they prefer to appear on the covers of "National Petrographic" to start cleaning brushes. That's what they have Tadeo for, right?

Victoria Moon

Sara's former university classmate, she left archeology to dedicate herself to exploring the mysteries of the afterlife... and back here. A mix between Esperanza Gracia and Iker Jiménez (famous real-life spanish TV hosts), the "cool" archaeologists make fun of her calling her "Freaktoria", but she has been much closer than them to revealing hidden secrets. Coincidence? I do not think so!

Ryu

He is the head of the "cool" archaeologists. He prefers a led flashlight to the fire of a torch, study to audacity, thinking to doing. That's why he has a mania for Tadeo... also because of the damage Tadeo has caused in his excavation. Who said it was going to be easy!

Ramirez

Mexican police, serious and effective. She is one of Mummy's seven followers on social media. She is the only one with a bit of sanity in this whole story, she knows where the Louvre is and more than one secret martial arts key.

Pickle

The classic American law enforcement officer who thinks he has everything under control, but mistakes his badge for his bowling alley card. He thinks that the Louvre is in Rome, that everything is a conspiracy and, furthermore, he is obsessed with giving Tadeo the key to sleep. And it is that he weighs more his weapon than his brain.

Hermes and the Emerald Tablet

A lot of sarcophagus and little mummy, and although it looks like the most seedy mummy in the world, don't see how it messes them up. Small but bully, when he gets angry he unleashes a plague, a curse, or whatever. This is for an adventure movie!

Mrs. Wollfstrom

The classic neighbor who has social control of the stairs to the letter. A gossip manual. She does not miss who enters, nor who leaves. And she doesn't like the lack of seriousness in the neighborhood... "that they are receiving boxes at all hours", "that they make a lot of noise", "that the TV is very loud", "that the apartment smells like death", etc.

Jean Paul

The man destined to make history, to win every race, to return France to a prestigious place in the world of cycling... until a bathtub took him away!

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My opinion of each character (in order)

Tadeo - You need to study man, I know you discovered many thing but that isn't a free pass to who knows what years of studying archeology.

Jeff - Is he going to play with bones in Mexico? Well, a trailer shows that yes, but I hope the mean trio don't know that.

Sara - Thinks trusting the team is important? Hmmm, I wonder what she would think at Tad damaging his relationship with Mummy.

Belzoni - So he is the one to steal Ryu's fajitas? Good for him! Also does that mean he is called Bernand in french?

Mummy - Compulsive online shopping? THAT EXPLAINS ALL THOSE BOXES and the extravagant things inside them and the credit card part! Is that Tad's card? I don't think he has one of his own. Oh boy...

Ammyt - Acts like a puppy, awww. Breathes fire? So cool, but yikes! This power reminds me of the ones a special category of mummies had in an old Tadeo Jones videogame (I think they were egyptian mummies who looked like Mummy... only that they had red clothes) a question here... Is that a power of the Ammyt or one of Mummy's powers?

Beljeff / Jefzoni - They manage to fool Ramona thinking they are one of her gods right? At least for a moment.

Pollo - What a cute name! It reminds me of Pataclaun. Mummy's new best friend? Could it be that Mummy is slowly realizing Tad doesn't want him around and that's why he is changing him with a rubber chicken? That's so sad, but also hilarous because... is a rubber chicken. Its squeak gives it away? Does this mean him doing sounds is a good or bad sign?

Ra Amon Ah - Of course nobody can find her in Egyptian history, she only was queen for three days! She doesn't remember being a pharaoh so well? Must be the time she was "alive" messing with her memory. It could have happened to Mummy. Speaking about him, does that mean they have more in common than what we thought? Bandages aside, I think they both could have been royalty in their empires. Wonder what the last warning means.

"Cool" Archaeologists - More like "Mean & Mighty" archeologists, even though I can't deny they have the studies and knowledge to be cool. I had creepy vibes since I saw the three of them, could be because they are entitled and bullies.

Victoria Moon - She is into exploring what the afterlife has to give? Oh, she is SO GOING TO LOVE the living mummies, Mummy especially, since both are eccentric and welcoming. Noooo, the bullies call her "Freaktoria" that's so mean! She doesn't deserve that. Bet she is going to meet them in Egypt and them mocking her (again) will make her an easy victim to the Emerald Tablet. I wonder how Sara will react at seeing her former friend being bullied by those three, even if she is part of the reason Tad is wanted in many countries.

Ryu (Ryan) - Yeah, yes... he is really mean BUT those reasons of why he is wary of Tad are totally valid and accurate not to mention the fact that, as the head of the archeologists, he will be the principal culprit of whatever mess Tad could do if he accepts him in his group. Yeah, can't blame the guy, but don't be a bully.

Ramirez - Best character so far, you go Lupe! One of Mummy's seven followers? So she is the new follower Mummy was talking about in the sewers! Also, seven followers? I thought Mummy was a hit on the internet. Maybe he is just starting his account, but calling him an influencer with less than 10 followers is exagerated. Maybe he will get better. Martial arts? Tad, Mummy and Pickles, better watch out. She has the power.

Pickles - Mister Picols, your typical gringo everyone! He is just as I imagined. I wouldn't blame him for being confused about mixing France with Italy, I also had that mistake... AT FIVE YEARS OLD. What's your excuse man? You're from the FBI (or CIA, can't remember) Now I'm pretty sure he will confuse Mummy for an Aztec Mummy or a guy dressed as a mummy... and then try to shoot him. As Childish Gambino said... This is America and Pickles is the proof of that. Doesn't mean he won't be a lovable character. I will laugh at his scenes but, poor agent Ramirez.

Hermes - Little guy with a short fuse, is he alive? Is he mad at Tad & Mummy? But man... they released you! I guess he woke up and choose violence via curses.

Mrs. Wollfstrom - I guess something get pass her, as Mummy can demostrate. She is the kind of old woman that here in Latinoamerica we will say at her many complains "Cállese/cálmese señora!"

Jean Paul - Poor man. How is he going to explain to his people that a bathtub stole his dreams of victory? And why is he Pollo's new friend? Little theory, maybe when Mummy loses Pollo at the end of the film, it goes flying and hits Jean Paul in the face, as a screenshot shows a bike race in Egypt. Man didn't need to meet Hermes to be cursed. RIP

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home-decor-design · 2 months

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40 most beautiful places on Earth

Our world is filled with indescribable beauty, both man-made and natural. It is difficult to say whether one life is enough to see all the wonders of earth. But we want to look at 40 most beautiful places around the world that are definitely worth visiting.

1. Bagan, Myanmar

Bagan is the capital of the first state in Myanmar. During its heyday, more than 10 thousand religious buildings were built on the local plains; today, in the abandoned temple complex there are more than 2 thousand ancient Buddhist temples. Ancient pagodas, temples, sacred caves and stupas, located in the bend of the Irrawaddy River, preserve the memory of the former capital of the Burmese Empire. Bagan is an amazing and eclectic sight: the temples are built from limestone, sandstone, marble, with tiles and underground galleries - and each is at least somewhat different from its neighbors.

2. Colored rocks of Zhangye Danxia in Gansu Province, China

Zhangye Danxia Colored Rocks are colorful rock formations in the Geological Park in Gansu Province, China. These formations represent a unique type of petrographic geomorphology and are composed of Cretaceous red sandstones and conglomerates. Today, the Zhangye Danxia Colored Cliffs Scenic Area is popular with travelers from all over the planet, who come here to enjoy scenic walks and boat rides through the area. which are also home to a number of temples.

3. Li River, China

The Li River is one of the most picturesque places in China. National Geographic magazine included the River Lee in its list of ten water wonders of the world. The Li River is often called the “pearl of China”, and residents of the city of Guilin, which is located on the banks of the river, consider it the soul and heart of their city. The river passes through the world's largest and most beautiful karst landscape. The most picturesque part of the river is an 83-kilometer section located between the cities of Guilin and Yangshuo. The landscape is adorned with green hills and steep cliffs that are full of fantastic caves.

4. Monastic complex of Meteora, Greece

Meteora is a famous monastery complex that occupies a vast area near Kalambaka, which is located in northern Greece. What is unique is that the buildings are located on the giant rocks of Thessaly - they are called “meteoros”, which is translated from Greek as “hanging in the air”. The territory has been known as a place of hermitage since the eleventh century - the rich history of centuries attracts pilgrims and travelers from all over the world.

5. Salar de Uyuni - the world's largest salt flat, Bolivia

The Salar de Uyuni, or Uyuni Salt Desert, is a dry body of water and the largest salt flat in the world. Once upon a time, the Salar de Uyuni was an integral part of a prehistoric salt lake that occupied much of southwestern Bolivia. After the reservoir dried up, it turned into several small seasonal lakes and salt marshes. The unparalleled beauty and atmosphere of this salt desert makes it one of the most impressive natural attractions in all of South America.

6. Tianji Mountains, China

Everyone has seen landscapes like this in movies like Avatar. Such mountains are typical for the fantasy style, where the action takes place on an unknown, distant planet. But the Tianji Mountains are absolutely real and are located in the Hunan province of China. Huge marble spiers soar hundreds of meters into the air from the base. Visitors can take the cable car to see all these wonders up close.

7. Santorini Island, Greece

Santorini is a magical island located in the Aegean Sea, in the very south of the Cyclades Islands. Santorini is more than 3,500 years old, and traces of ancient civilizations constantly remind us of the rich past of the archipelago. But here the last thing you want to think about is time: relaxation surrounded by volcanic landscapes, amazingly blue seas, well-groomed beaches with colorful sand and postcard houses with snow-white facades is truly serene. People come here to admire the sunsets, enjoy the moment, and regain inner harmony lost in the eternal rush and bustle.

8. Giant Angkor Temple Complex, Cambodia

Angkor Wat, dedicated to the Hindu god Vishnu, is the largest religious building in the world. This is a complex three-level structure with many stairs and passages, topped with 5 towers. It is not for nothing that the temple is called the soul of the Khmer people, because Angkor exactly represents Khmer art, a great civilization, the heart of the nation. In total, the territory covers more than 400 sq. km there are about 200 monuments.

9. Yosemite Valley, USA

Yosemite National Park is located on the western slopes of the Sierra Nevada range in California. This ridge stretches across all of California, its height increases from west to east. Yosemite Valley occupies only one percent of the park's total area, but it is where most visitors flock. One of the most popular sites in the world among rock climbers with routes of varying difficulty levels is the granite rock El Capitan, 2307 m above sea level, clearly visible from any part of the valley.

10. Hitachi National Seaside Park, Japan

Hitachi National Park is an amazing example of landscape design. Flower fields stretching beyond the horizon are located on the territory of a former American military base. In the place where armed troops were once based, tulips, poppies, daffodils, forget-me-nots, lilies and sakura are now blooming in lush colors. A feature of the huge park, spread over an area of 120 hectares, is its adherence to the natural seasons: spring, summer, autumn and winter have their own floral covers.

11. Sagano Bamboo Forest in Kyoto, Japan

The Sagano Bamboo Forest is an amazing bamboo grove containing thousands of thin and tall bamboo trees. The forest is one of Japan's most scenic natural attractions, and it is located in the western part of the city of Kyoto in a park called Arashiyama. The forest has become famous not only for its unsurpassed beauty, but also for the unique sounds that arise when wind currents come into contact with thin bamboo stems. Many park visitors come to this place to enjoy the special natural melodies.

12. Ancient city of Petra, Jordan

The ancient city of Petra is rightfully considered the main attraction of Jordan, which glorified this eastern country throughout the globe, and one of the 7 new wonders of the world! They say that in the whole world there is nothing like Petra. Carved into the stone walls of the mountains, the pink-red city is full of mysterious charm, as if created to instill a piece of wonder in everyone who dares to visit it.

13. Inca city Machu Picchu, Peru

The walled city of Machu Picchu is one of the most beautiful places on the planet, awarded the title of New Wonder of the World in 2007. Machu Picchu has many honorary titles - it is often called the “city in the sky” or “the city among the clouds”, sometimes – the “lost city of the Incas”. The mysterious city, invisible from below and completely autonomous in the past, is today considered the most important tourist attraction in Peru.

14. Benagil Cave in Algarve, Portugal

The Algarve de Benagil cave is located in Portugal and is one of the most beautiful places not only in this country, but on the entire planet. This natural landmark was formed under the influence of water and wind, forming a natural cavity of incredible beauty. The cave is located next to the popular Benagil beach and can only be accessed from the sea.

15. Ha Long Bay, Vietnam

Majestic and mysterious, inspiring and amazing: all words are not enough to describe the beauty of this natural wonder - Ha Long Bay. Try to imagine more than three thousand islets rising from the emerald waters of the Gulf of Tonkin - and your imagination will not be half as beautiful as the views of the bay, which will take your breath away. Halong is a perfect work of art, a priceless collection of unfinished sculptures created by the hands of nature itself.

16. Pamukkale, Türkiye

The thermal springs of Pamukkale are an incredible place created by nature itself and attracting millions of people every year. The name translates from Turkish as “cotton castle”. Indeed, when you look at the Pamukkale resort from a distance or in a photo, it seems that you see in front of you a large castle built from many fluffy cotton bolls. This place is also called “Cleopatra’s pool” - according to legend, it was here that the Egyptian queen drew beauty and youth.

17. Rice terraces in Mu Can Chai, Vietnam

The rice terraces in Vietnam are considered one of the wonders of the world, created jointly by nature and man. It seems that the best landscape designers in the world worked on them.

18. Monument Valley, USA

On the border with the state of Arizona and in the southeast of the state of Utah there is one of the national symbols and simply the pride of the United States, a legendary place where hundreds of cowboy advertisements, videos, westerns and other films were filmed - Monument Valley. Since ancient times, the indigenous people of the United States, the Navajo Indian tribes, have lived in the valley in their huts without access to basic running water or electricity. A visit to their settlements is part of the excursion, which will be kindly, but not free, provided to you by the monopolists in this matter - the Indians. They have established themselves as masters of the area and conduct daily tours for the huge number of tourists visiting the park.

19. Perito Moreno Glacier in Patagonia, Argentina

Perito Moreno is the jewel of the Los Glaciares National Park. This pile of huge blue ice floes is located on the border of the Argentine province of Santa Cruz and Chile. This fantastic natural monument in the Argentine part of Patagonia is just one of 48 glaciers fed by the southern part of the glacier located in the Andes. If you're lucky, in Perito Moreno you can see how the huge ice dam of Lake Argentino breaks through, and ice floes accumulate on the opposite shore. This happens from once a year to once every ten years.

20. Hang Son Doong Cave, Vietnam

Son Doong is the largest cave on the planet and the main symbol of the Phong Nha-Kebang National Park, located 500 km south of Hanoi. Despite the honorable status, residents of the surrounding villages learned about the giant cave only in 1991, and the rest of the world in general in 2009, after an expedition of speleologists from the UK. So it is not surprising that its underground passages are still only in the initial stages of exploration.

21. Venice, Italy

You can describe and admire Venice almost endlessly. This is a fabulous city on the water, conveniently spread over more than a hundred islands connected by numerous bridges - a real paradise for romantics. Here you can walk through the narrow streets where the charming Casanova once walked, ride an elegant gondola, and enjoy the bright sunset on the shores of the Venetian Lagoon.

22. Plitvice Lakes - the largest national park in Croatia

The park contains picturesque waterfalls, caves, ponds, lakes and beech and spruce forests, where you can meet roe deer, wildcats and watch rare species of birds. The lakes and waterfalls of the reserve attract tourists from all over the world. Water flows form 16 large karst lakes with water of rich turquoise color, communicating with each other thanks to a cascade arrangement. Foamy waterfalls, lost in forests and thickets, create unique landscapes of the natural park.RESULTS Ð°

23. Lencois Maranhenses National Park, Brazil

Right on the shores of the Atlantic Ocean is located the most beautiful national park in Brazil. Without a doubt, it should be considered one of the most mysterious places on our planet. An area of more than a thousand square meters is occupied by snow-white sand dunes up to 40 meters high, between which small lakes with turquoise water can be seen here and there.

24. Navagio Bay, Greece

Navagio Bay is, without exaggeration, one of the most beautiful and world famous beaches in Greece. This piece of paradise is located on the island of Zakynthos. Navagio is a small bay with white sand, surrounded by steep white cliffs. The beach of the same name is decorated with the rusty wreck of a smuggler's ship. The stranded ship "Panagiotis", which appeared here in 1980, can be explored. You can only get to the bay by excursion boat: the passage from land has an incredibly steep descent.

25. Provence, France

Among the postcard landscapes of the French countryside, there are hardly any more replicated than lavender fields. The main “lavender” department of France, picturesque Provence, boasts hundreds of square kilometers of these fantastic alien landscapes, and in July-August there is a real pilgrimage of admiring tourists.

26. Victoria Falls on the Zambezi River, border of Zambia and Zimbabwe

Majestic beauty and power, a roar that never stops for a second, a million splashes forming a cloud of steam and fog, a feeling of danger when you stand on the edge, and above all this grandeur a dazzling rainbow - this is exactly the picture you can see at Victoria Falls, one of the largest waterfalls of the world. It is possible to view the waterfall from several points. Read the full article

#beautiful #destinations #earth #places #world

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labotronicsscientific · 4 months

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LCD digital polarizing microscope

LCD digital polarizing microscope is a bench-top unit integrated with Siedentopf binocular head for fine focusing. HD LCD screen for viewing the images. Built-in provision to capture quick and short video. Coaxial coarse and fine adjustment focus knob with tension adjustment aids in mobility of the objective lenses. Polarizing unit contains 360 degree rotatable polarizer and analyzer.

#petrographic microscope price #leica polarizing microscope #nikon petrographic microscope #zeiss petrographic microscope #polarizer for microscope

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jobskenyaplace · 3 months

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VARIOUS GDC TENDER NOTICE JANUARY 2024

GEOTHERMAL DEVELOPMENT COMPANY LIMITED TENDER JANUARY 2024 TENDER NOTICE The Geothermal Development Company Limited (GDC) invites sealed tenders from eligible candidates for the following: TENDER NO. TENDER DESCRIPTION TENDER SECURITY MANDATORY SITE VISIT CLOSING DATE GDC/GRA/OT/032/ 2023-2024 Tender for Supply and Delivery of Petrographic Microscope and Desktop Auto Petro Thin Kshs.…

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#GEOTHERMAL DEVELOPMENT COMPANY LIMITED TENDER JANUARY 2024 #VARIOUS GDC TENDER NOTICE JANUARY 2024

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pooma-today · 4 months

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The National UN Volunteers-India

Noida International Public School, Noida

Uttarkashi Tunnel Collapse - Presentation

Title: Mathematical Analysis of the destruction

Guide: Mrs. Meenu, Mathematics teacher

1. What Could be the Potential Cause of Tunnel Collapse?

About:

The Silkyara-Barkot tunnel is part of the ambitious Char Dham all-weather road project of the Central Government.

The construction of the tunnel was tendered to Hyderabad-headquartered Navayuga Engineering Company by the National Highways and Infrastructure Development Corporation Ltd (NHIDCL), a fully owned company of the Ministry of Road Transport & Highways, Government of India.

2. Potential Causes of Tunnel Collapse:

The exact cause of the tunnel collapse is yet to be ascertained, but a possible factor could be:

▪️The collapsed section, situated around 200-300 meters from the tunnel mouth, might have contained a hidden loose patch of fractured or weak rock, undetectable during construction.

▪️Water seepage through this compromised rock could have eroded it over time, creating an unseen void atop the tunnel structure.

3. What are the Critical Aspects of Tunnel Construction?

▪️Tunnel Excavation Techniques:

• Drill and Blast Method (DBM): Involves drilling holes into rock and detonating explosives to break it apart.

• DBM is often used in regions like the Himalayas (Jammu & Kashmir and Uttarakhand) due to the challenging terrain.

• Tunnel-Boring Machines (TBMs): It bore through rock while supporting the tunnel behind with precast concrete segments. It is a more expensive but safer method.

• TBMs are ideal when the rock cover is up to 400 metres tall. Underground tunnels for the Delhi Metro were dug using a TBM at shallow depth.

4. Aspects in Tunnel Construction:

¹Rock Investigation: Thoroughly examining the rock's strength and composition through seismic waves and petrographic analysis to assess its load-bearing capacity and stability.

²Monitoring and Support: Continuous monitoring using stress and deformation meters, along with various support mechanisms like shotcrete, rock bolts, steel ribs, and specialized tunnel pipe umbrellas.

³Geologist Assessments: Independent geologists play a crucial role in examining the tunnel, predicting potential failures, and determining the rock's stability duration.

5. What are the Other Major Tunnels in India?

¹Atal Tunnel: Atal Tunnel (also known as Rohtang Tunnel) is a highway tunnel built under the Rohtang Pass in the eastern Pir Panjal range of the Himalayas on the Leh-Manali Highway in Himachal Pradesh, India.

At a length of 9.02 km, it is the longest tunnel above 10,000 feet (3,048 m) in the world.

²Pir Panjal Railway Tunnel: This 11.2 km long tunnel is India's longest transportation railway tunnel.

It runs through the Pir Panjal mountain range between Quazigund and Baramulla.

³Jawahar Tunnel: It is also called Banihal Tunnel. The length of the tunnel is 2.85 km.

The tunnel facilitates round-the-year road connectivity between Srinagar and Jammu.

⁴Dr Syama Prasad Mookerjee Road Tunnel: It was previously known as Chenani-Nashri Tunnel and is the longest road tunnel of India.The length of this road tunnel is 9.3 km.

6. Way Forward

¹Regular Maintenance: Implement a stringent maintenance schedule, including inspections for structural integrity, drainage systems, and ventilation to identify and rectify issues promptly.

Employ sensors and monitoring technologies to continuously assess structural health, detecting any potential weaknesses or anomalies early.

Risk Assessment and Preparedness: Conducting third party risk assessments periodically, considering geological, environmental, and usage factors.

Developing contingency plans and emergency protocols in case of any structural concerns.

²Training and Awareness: Training personnel in tunnel management and emergency response procedures. Public awareness campaigns can educate users and nearby residents about safety measures and reporting mechanisms.

³Technology Integration: Explore innovative technologies like Artificial Intelligence, drones, or robotics for more efficient inspections, maintenance, and early detection of potential issues.

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