Thank you so much! I actually cringe when I look back at super old videos like this one, but I am so glad that people are still getting value from it ;D Thank you for this comment, it made my day :)
"Principle of Superposition" I was a tiny bit disappointed upon learning that this principle refers to the concept that "higher layers correspond to later formation dates." I didn't really expect you to say that "rocks are in multiple locations at once until we observe them." Still, I could help but entertain the unlikely possibility of using a quantum effect, or even a macroscopic quantum effect, to date rocks.
If you want to imagine time as length. 1 mm to be 1 year. then 1 mile is 1.6 million years. 640 million years is 400 miles. 2,812 miles is 4.5 billion years. The Earth's circumference is 45 billion years.
A lot of this I already knew. You added explanations that added depth and clarity for me. Your thought exercise is wonderful. Thank you so much. I watched this as a review, I thought, but you added to my knowledge. You may have heard of the Baja to BC series Prof. Zentner is doing. I have been following that as best I can. It is now on a 2 week break. During this, my goal is to review and fill in knowledge gaps as much as I can. I am going to make a "time stick" tomorrow for placement of information in geological time for this large topic. Hence, I did your video.
@@amitlohare Here's one of the videos in my igneous petrology playlist: th-cam.com/video/xk65ygUQHtk/w-d-xo.html, but you can check out the rest of the videos in that playlist for more info on magma melting and cooling ;)
Corny geology humor: No one should ever date relatives! But seriously, thank you for all the work you’ve put into you ur videos. They’re very helpful for either brushing up or learning about topics that didn’t get much attention in our undergrad program. I wish I could get CEUs for watching them - they’re certainly very high quality, just not accredited. (Yet?)
Very nice! Have you produced a video which describes why the periods, eras, epochs, etc. are divided as they are? Some of them are obvious due to cataclysmic events and mass extinctions; but what about the more subtle divisions? What reasons are there for such separations?
Question: how old is the sun? how do we know (if we know)? has the sun heavy elements in its interior? if not, why? congratulations for your channel, great work!
Thanks for the support and comment! Here's all I know about the sun: The sun formed when the rest of the objects in our solar system were accreted about ~4.55 billion years ago and we know the age of the solar system and all (well actually most, not all) of its components from radiometrically dating meteorites (see my 'how we dated Earth' video: th-cam.com/video/suUX9-JAwNM/w-d-xo.html) As for heavy elements, the short answer is no. But the longer answer is it depends on what you count as heavy haha. The sun (and all young stars) are dominated by H and He (the lightest elements). But over time all stars begin to form heavier and heavier elements from their interior to exterior via nuclear fusion. However, once the star gets so mature that it begins to form Fe (iron), its gravity crushes itself and it explodes in a supernova (or at least this is what I was taught a few years ago so I am assuming that is still our view). I am not an astrophysicist or heliophysicist so I do not know what stage our sun is at in terms of what elements it has in its interior, but I have heard others say that our sun will explode in about 5 billions years (in other words it is about half way through the life span of a star its size). Hope that helps!
this is obnoxious. nobody with self respect actually cares, pal. go read Lolita and Don Quixote and stop giving the West a bad name. rocks are sexy but nobody is here to meet a new date. you are the reason that more women don't take the leap into content creation. if you care so much about girls penetrating more areas of youtube, you should probs shut up and stay silent, as what you do is creepy. creeper. way to make every gal who read your comment cringe
After watching similar videos on half a dozen channels, this one is the best summary of geologic time I've seen. You are such a good teacher!
Thank you so much! I actually cringe when I look back at super old videos like this one, but I am so glad that people are still getting value from it ;D Thank you for this comment, it made my day :)
"Principle of Superposition"
I was a tiny bit disappointed upon learning that this principle refers to the concept that "higher layers correspond to later formation dates."
I didn't really expect you to say that "rocks are in multiple locations at once until we observe them." Still, I could help but entertain the unlikely possibility of using a quantum effect, or even a macroscopic quantum effect, to date rocks.
If you want to imagine time as length. 1 mm to be 1 year. then 1 mile is 1.6 million years. 640 million years is 400 miles. 2,812 miles is 4.5 billion years. The Earth's circumference is 45 billion years.
A lot of this I already knew. You added explanations that added depth and clarity for me. Your thought exercise is wonderful. Thank you so much. I watched this as a review, I thought, but you added to my knowledge. You may have heard of the Baja to BC series Prof. Zentner is doing. I have been following that as best I can. It is now on a 2 week break. During this, my goal is to review and fill in knowledge gaps as much as I can. I am going to make a "time stick" tomorrow for placement of information in geological time for this large topic. Hence, I did your video.
Just found your channel. Thank you for all of your knowledge and effort.
Thanks! I am surprised to get this comment on such an old video of mine haha, but I am so glad you like my videos ;D
Too much helpful... your way of expression is awesome 👍
Thanks ;D
@@GEOGIRL mam Can you explain me Mantle melting
@@amitlohare Here's one of the videos in my igneous petrology playlist: th-cam.com/video/xk65ygUQHtk/w-d-xo.html, but you can check out the rest of the videos in that playlist for more info on magma melting and cooling ;)
Hey geo girl where can I get a clear pic of the circular time chart at 6:31
Here's the clearest version I can find: i.pinimg.com/736x/80/36/3c/80363c9a5b52cb4da41b45f51fffa1a1---hour-clock-timeline.jpg
Here is one more about the same clarity as the last: i.pinimg.com/originals/80/36/3c/80363c9a5b52cb4da41b45f51fffa1a1.png
I sent links in the comments, sometimes youtube takes those down, so let me know if you got it! ;)
Got them crystal clear! Thanks geo girl! Not universe girl jajaja
Corny geology humor: No one should ever date relatives! But seriously, thank you for all the work you’ve put into you ur videos. They’re very helpful for either brushing up or learning about topics that didn’t get much attention in our undergrad program. I wish I could get CEUs for watching them - they’re certainly very high quality, just not accredited. (Yet?)
Thank you.
Very nice! Have you produced a video which describes why the periods, eras, epochs, etc. are divided as they are? Some of them are obvious due to cataclysmic events and mass extinctions; but what about the more subtle divisions? What reasons are there for such separations?
Oh, and how were the names chosen for the time divisions? Thanks!
Question: how old is the sun? how do we know (if we know)? has the sun heavy elements in its interior? if not, why? congratulations for your channel, great work!
Thanks for the support and comment! Here's all I know about the sun:
The sun formed when the rest of the objects in our solar system were accreted about ~4.55 billion years ago and we know the age of the solar system and all (well actually most, not all) of its components from radiometrically dating meteorites (see my 'how we dated Earth' video: th-cam.com/video/suUX9-JAwNM/w-d-xo.html)
As for heavy elements, the short answer is no. But the longer answer is it depends on what you count as heavy haha. The sun (and all young stars) are dominated by H and He (the lightest elements). But over time all stars begin to form heavier and heavier elements from their interior to exterior via nuclear fusion. However, once the star gets so mature that it begins to form Fe (iron), its gravity crushes itself and it explodes in a supernova (or at least this is what I was taught a few years ago so I am assuming that is still our view). I am not an astrophysicist or heliophysicist so I do not know what stage our sun is at in terms of what elements it has in its interior, but I have heard others say that our sun will explode in about 5 billions years (in other words it is about half way through the life span of a star its size). Hope that helps!
Its dawning on me there's probably a playlist for this. 😂💖
It was so cool!
thanks a lot, it's a lot of work that you're sharing with us. Tx
Thanks! So glad you like my videos ;D
Great videos.
how to remember geo time scale ??
Listen to this song! ;) th-cam.com/video/3d_y1yK-p7w/w-d-xo.html
Thank you
Don't date relatives... it's too complicated.
when were living the unicorns?
Now! They are called Narwhals ;)
@@GEOGIRL 💜
We must wait until Gandalf shows up at an equestrian event.
Alternatively rhinos are what the Bible probably meant and they're actually coincidentally pretty close on the mammal phylogenetic tree to horses
you are so beautiful
this is obnoxious. nobody with self respect actually cares, pal. go read Lolita and Don Quixote and stop giving the West a bad name. rocks are sexy but nobody is here to meet a new date. you are the reason that more women don't take the leap into content creation. if you care so much about girls penetrating more areas of youtube, you should probs shut up and stay silent, as what you do is creepy. creeper.
way to make every gal who read your comment cringe