The Amazing Life of Sand | Deep Look
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- เผยแพร่เมื่อ 3 พ.ย. 2014
- There's a story in every grain of sand: tales of life and death, fire and water. If you scooped up a handful of sand from every beach, you'd have a history of the world sifting through your fingers.
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---+ How does sand form?
Sand can be anything that has been worn down until it’s reduced to some tiny, essential fragment of what it once was: a granite pebble from the mountains; coral from the sea; obsidian from a volcano; even skeletons of microscopic sea animals. It's also a technical term. Bigger than sand, that’s gravel, smaller? Silt.
By studying the composition and texture of sand, geologists can reconstruct its incredible life history. “There’s just a ton of information out there, and all of it is in the sand,” said Mary McGann, a geologist at the United States Geological Survey in Menlo Park, CA.
McGann recently took part in a comprehensive research project mapping sand’s journey into and throughout San Francisco Bay.
Patrick Barnard, another USGS geologist who helped oversee the project, said that it will help scientists understand how local beaches are changing over time. In particular, Barnard wants to understand why beaches just south of San Francisco Bay are among the most rapidly eroding beaches in the state.
From 2010-2012, Barnard and his team sampled beaches, outcrops, rivers and creeks to track sand’s journey around the bay. They even collected sand from the ocean floor. The researchers then carefully analyzed the samples to characterize the shapes, sizes, and chemical properties of the sand grains.
Barnard said the information provides a kind of fingerprint, or signature, for each sample that can then be matched to a potential source. For example, certain minerals may only come from the Sierra Mountains or the Marin Headlands.
“If we’ve covered all of the potential sources, and we know the unique signature of the sand from these different sources, and we find it on a beach somewhere, then we basically know where it came from,” explained Barnard.
And those species aren’t the only things finding their way into the sand. Manmade materials can show up there, too. McGann has found metal welding scraps and tiny glass spheres (commonly sprinkled on highways to make road stripes reflective) in sand samples from around the bay.
“All of these things can get washed into our rivers or our creeks, or washed off the road in storm drains,” explained McGann. “Eventually they end up in, for example, San Francisco Bay.”
By piecing together all of these clues - the information found in the minerals, biological material and man made objects that make up sand - the researchers ended up with a pretty clear picture of how sand travels around San Francisco Bay.
Some sands stay close to home. Rocky sand in the Marin Headlands comes from nearby bluffs, never straying far from its source.
Other sands travel hundreds of miles. Granite from the Sierra Nevada mountains careens down rivers and streams on a century-long sojourn to the coast.
In fact, much of the sand in the Bay Area comes from the Sacramento and San Joaquin rivers, with local watersheds also playing an important role in transporting sand to the beach.
Although this project focused on San Francisco Bay, the same techniques could be used to study other coastal systems, he added, revealing the incredible life stories of sand from around the world.
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Full article: blogs.kqed.org/science/2014/11...
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Funding for Deep Look is provided in part by PBS Digital Studios and the John S. and James L. Knight Foundation. Deep Look is a project of KQED Science, which is also supported by HopeLab, the David B. Gold Foundation, the S. D. Bechtel, Jr. Foundation, the Dirk and Charlene Kabcenell Foundation, the Vadasz Family Foundation, the Gordon and Betty Moore Foundation, the Smart Family Foundation and the members of KQED.
#deeplook - วิทยาศาสตร์และเทคโนโลยี
Is sand called sand because it's between sea and land?
mind. blown.
Deep Look Ayyyyyy thanks! (But wow omg sand sea land-) and then we all exploded
*@Sycamorre* ___ Good point...but indeed....it's interesting to figure out how things got named . Often the sound a collection of letters makes, might indicate the object...wonder how stone age man did indicate "sand".
In the major languages it starts with an 's' or a 'z'..Germans call it "sand" also , yet the French call it "sable"...The Spanish for some reason call it "arena"..???? Yet the peoples mostly associated with sand ,the Arabs (and Dutch), call it "zand"...
Deserts are just dried up oceans, people find sea fossils there all the time
WHAAAAT?!
if you think about it, if you throw the sand or move it somewhere else, it could end up miles away from where it was going to end up before which makes *you* part of its story
Diamond Miner Animaniac Very true....lol!!!!!
*True*
And people still say our actions don't have consequences....
weow
Tlactl how to be in a book without asking the author
I want to know every grain of sands story now .-.
Me too! 😂😂
Scarlet Grace Victoria You may have too much time on your hands.
okay
*WHO LIVES WHO DIES WHO TELLS SAND'S STORY*
+Sketchy Pencil Hamilton
This video makes me want to start collecting sand ._.
sameeeee...so odd
Me too... 😂😂😂 That's why I'm wondering if it's allowed to bring sand at the airport...
That's illegal in some beaches like boracay
The natives were right. Stories of life are written in everything in existence. In trees, in coral, even sand. Layers of dirt are like piles of paper filled with information of the past when you look at them through the lens of an Archaeologist. Itś really fascinating how the most simple and seemingly insignificant things could hold so much significance.
It's*
@@lennyface2586 yeah yeah smart freak can't u just appreciate his comment.
Are you here just to lecture other grammar.
I love how you phrased it all❤❤❤❤ It really is amazing! I wonder how amazing it was also for our ancestors to feel more connected to them too every existing living organism❤❤
Why am i so amazed at sand!
Your icon reflects your comment perfectly
MoondayBlue because your life is as insignificant as a grain of sand.
How does this channel not have a million subscribers? The quality of videos surpasses most of the naturalistic channels. Rivals that of BBC and Discovery.
Thats what internet is today
The Humble Geometric Figure of Doom IKR
Such a shame it's no longer actualised as well... it's so hard to find good content nowadays.
Aged like wine
Finally, a channel that focuses on the small things in life, and explains the beauty of the things we don't see everyday. These videos are short and simple, and are packed with information that I can enjoy. Thank you for your effort, and I suspect that this channel will start booming in popularity any time soon.
You are welcome, John.
Stellar footage. This concept is fascinating, and I'm
So
Glad I found your Chanel. Seriously, gorgeous stuff. The kind of artful education I'm looking for.
We are happy to oblige, Kendal. Tell your friends!
@@KQEDDeepLook no
Great, now I'm looking up "brine shrimp poop".
now i am too because if you
veranet99 thanks a lot
*The Amazing Life of Sand*
There’s a story in every grain of sand: tales of life and death, fire and water. If you scooped up a handful of sand from every beach, you’d have a history of the world sifting through your fingers. From mountain boulders to the shells of tiny ocean creatures, follow the journey that sand takes through thousands of years across entire continents to wind up stuck between your toes.
Find out what USGS News: Everything We've Got is discovering about sand: goo.gl/IrvXPZ
Subscribe to our channel on TH-cam: goo.gl/8NwXqt
Presented by PBS Digital Studios and KQED.
Every now & then I find an interesting new channel. This was one of today's :)
Are you quoting William Blake? "To see a World in a Grain of Sand"
BACKGROUND MUSIC RIP OFF BUSTA RHYMES MUCH??
*I HATE YOOU!!*
Somehow, I read that as
Tales of earth and air, water and fire...
Long ago, the four nations lived in harmony~
Anakin Skywalker made 42 separate accounts to dislike this video
what
{feather_cloud} because he hates sand it’s messy and gets everywhere
@@amazely5205 ok
*intense inner pain*
Well ive been to some philipine beaches and and the sand was really different and some sands are made by the stone fish
I'm starting to wish these little shorts were in fact the intro to multi-hour long documentaries. :( I want to learn morrreeee
Really enjoying the high quality videos, it reminds me of the light reading I would do when I was a little kid. I used to read so much about random animals and facts about the nature kingdom. If I could suggest a topic, I'd love to learn more about the origin of household cats, and their behaviour to use litter. Did they all originate from deserts?
Cats bury their poop in whatever is available on the ground, dirt, sand, mulch, leaves, etc. Thats why they go for litter so well.
@ekul Z its their natural instinct is why, just like i said above...
@@peacockfeathers7409 and the question is, why? Why is that their natural instinct? Why is their natural instinct to burry their feces? Do they use it as fertilizers to grow plants for their sheep who they'll then slaughter as meat? Is it relatated to the so-called first housecats, Egypt? So many things to know.
@@anotherdayanotheranimation my personal belief is God made animals to have their natural instincts.
@@anotherdayanotheranimation to hide their scent, so as not to be found by the scent of their poop.
Producer: we need music to help convey feeling for sand/silt
Composer: ever play pikmin?
Producer : Brilliant!
These videos are perfect. I can't believe I missed this channel up to now.
+M. Utley Welcome! We hope you enjoy our channel!
Every of Deep Look videos is just like...3 minutes but it gives you just a plethora of knowledge
oh wow i need to start collecting sand on vacations......
Watch out, in some places it's illegal!
Excuse me, what?
I think the team at Deep Look learned in the hard way. :D Thanks mates!
Deserves more subscribers than jake paul
This channel is so underrated! These videos are just perfection! I enjoy so much watching them
Wish these were longer
never thought sand could be so interesting..keep up the good videos guys
This is the best video amongst your video i've seen till now
This is just beautiful, thank you for doing this.
great video great looking sand!!
High quality videos like this are becoming rare. Amazing job!
Honestly, it's everyday phenomena like this that give me a reason to keep living. Even if life seems unbearable some days, I find solace in knowing how wondrous the natural world I live in is. If I died, I wouldn't ever be able to watch a grasshopper groom itself again, or look at tiny fossils under a pocket microscope, or eavesdrop on birdsong. Sorry for the sappy, semi-depressing comment, but it really does give me a sense of fulfillment and unbridled joy to pay attention to little natural things like this. Keep up the amazing videos; you guys deserve way more subscribers than about 452K!
Thanks, Almandine!
This series wins on all fronts. Beautiful, thoughtful, well-produced, perfectly narrated... . I will be sad when I finish the archive. Yay Public Media!
Some of these bits may be deceased Avengers
i will never regret coming across this channel, subscribing and clicking on any of their videos... each short video is like a small documentary of all sorts of things! ive never been so mesmerized with something as *seemingly* simple as sand in my entire life! also, i cannot seem to appreciate the narrator's voices enough, extremely soothing and makes me want to keep watching...
You're the best channel for natural education
I love your videos, so interesting and well made !!!!
i am in love with this channel.. i came here daily to see something interesting and wounderful
Only deep look can make sand interesting. Keep up the good videos
Please never stop making these videos, this is my favorite channel 💗💗
honestly this channel is so underrated
The lenses you use to get these amazing pictures are amazing. Very beautiful images. Thanks, Deep Look!
So glad I found your channel - some superb imagery. This is a beautiful insight into the sciences of our world!
Each video I find of yours keeps blowing my mind
Anakin: Cool story, still sand
Your video short is the best I've seen on TH-cam. Thank you.
Wow!! Thanks I've always wondered where sand come from..
I seriously love all your videos. I learn so much everyday from watching them! Great quality, great content.
Thank you!
This story about sand is amazing
Fascinating, never that of sand like that.
Excellent video! Such great job on the production. Keep up the great work. Easily one of the best TH-cam channel out there!
This was amazing to watch and the change in perspective is nice from other natural documentaries. How about follow up videos on dirt and rocks? :)
I really somehow love your music backgrounds,it makes the story more interesting!Thats why I subbed for interesting stories!
Thank you for your kindness to share the knowledge
Mesmerizing.
This is actually one of the most original and intriguing videos this channel ever made
Deep look can I suggest? I wish to know the cycle of a snowflake from this channel.And thanks for keeping us amaze every time.
Thanks for the idea!
Are "shards of lava" the same thing as shards of obsidian?
Obsidian is a rock that forms when lava solidifies, so yes. However lava can also become many other types of volcanic (igneous) rock, so those shards of lava might include both obsidian and other rocks.
@@mikkicarr5717 Yeah but don`t forget to bring a diamond pickaxe.
"Time takes a big thing and makes it small" it's very deep if you think about it.
I thought the same - thinking about the problems of life
Another excellent story, thanks!
Science spoken in almost a poetic way in Deep Look's videos! That's why I love this channel.
Arts combined with Science creates a beautiful understanding of our World! 🤓🤓🤓
Thanks!
Amazing as always
I love the narrator's cute voice and the music together makes it sound so good!
Florida's beach sand is definately the best out of all of these, hawai's volcano sands is a close second
If y'all enjoyed this, I'd encourage you to take some Geology courses and learn a little more. It's amazing how much history is contained in the while crust of the earth not just sand.
I'm majoring in the subject in University as we speak, and it gets more and more interesting the more I learn.
I love Deep Look
I love your channel so much its so fascinating xxxxx
Now you went and made me fascinated by sand. And now I feel compelled to go and collect sand from beaches. Also I’m feeling intense regret that I didn’t collect any sand from the beaches I’ve been to since I was born.
Fascinating indeed ...
these videos are amazing, and surpass most popular you tube channels with million subscribers. you're amazing guys, every single one of you. keep it up.
Thanks, Nipun!
Wow props to Kia Simon, those effects where the camera goes from the back to the front plane in the pictures are so cool! Great video!
I want to collect sand from every beach I visit in my life
I never really thought about if there was a word perfectly opposite of erode, and there you have it. Accretes. Maybe I just never happened to have heard the word until now compared to everyone else. So not only am I learning some cool things about nature with this series, but also some new vocabulary. Thanks, Deep Look. I wish they made science classes back in school this interesting, because I failed those but I'm glued to this series. Being fascinated and intrigued is a very great key to learning.
This is amazing ❤️
Great video, Thanks I learned something new today.
They're so underrated omg
Sand is ..beautiful
Never have been more satisfied with sand and science!!!! 😂😂😂😂💖💖💖💖
This music is amazing.
Our original music is composed by Seth G. Samuel.
Subhan’Allahi wa bihamdihi!
Wonderful video!
I love these videos 👌🏻👌🏻👌🏻👌🏻👌🏻
It needed the theme: "Sand, Sand, Saaaaaand!"
beautiful video !!!
Wow! Sand...between sea and land...hahaha I love it!
*MIND BLOWN*
This is one of the best science channels on TH-cam. It's only a matter of time before your number of subscribers explodes.
Better than anything love the narrator 😘! Keep it up
Great video. Over time sand and dirt accumulates and sometimes is compacted back into rock and the story continues.
Thanks, James!
Too short, could easily be 4 times as long.
I love the video and channel
This channel is so good it makes sand seem interesting 😂
Wow! U can make a video about sand sooooo interesting....
And here was me thinking sand is only SiO2, and was about to ask if every sand is a really petite Quartz crystal O.o
Fascinating.
Amazing and eye opening!
+hala essam Thanks for watching!
loved this
AWESOME!!👍👍 new subscriber right here😃
omg this open my mind
*Please Make Videos Like These More Elaborate!!* 😍😍
So fascinating
WOW! this is amazing.. thank you for your uploads, i'm loving the channel already.. gonna share some of your vids to my students :)
Thank you for sharing!
loved it!
That's why I like beach
I feel like this channel can make a pile of dog faeces on the street seem incredible
subsribed,, :)
Pratidina W me too.
the sand is so cool
That's a hobby for you right there, collecting sand from every beach/place you visit in a vial! :)