this post was submitted on 05 Jul 2024
678 points (98.6% liked)
Comic Strips
11697 readers
1057 users here now
Comic Strips is a community for those who love comic stories.
The rules are simple:
- The post can be a single image, an image gallery, or a link to a specific comic hosted on another site (the author's website, for instance).
- The comic must be a complete story.
- If it is an external link, it must be to a specific story, not to the root of the site.
- You may post comics from others or your own.
- If you are posting a comic of your own, a maximum of one per week is allowed (I know, your comics are great, but this rule helps avoid spam).
- The comic can be in any language, but if it's not in English, OP must include an English translation in the post's 'body' field (note: you don't need to select a specific language when posting a comic).
- Politeness.
- Adult content is not allowed. This community aims to be fun for people of all ages.
Web of links
founded 1 year ago
MODERATORS
The problem with rivers on plains is that they wander. Take a gander at the Mississippi River river valley sometime. Why hasn't the mighty Mississippi carved a canyon yet? Because there has been no uplift to lock the river in place for long enough. The Colorado cut the grand canyon because the plains on which that river used to wander began to uplift. This started the cut. The faster the uplift, the faster the cut. Nick has another one on the hells canyon geology that showcases this really well. Hells canyon is deeper than the grand canyon while being only half the age.
https://youtu.be/wxg6124BpZw?si=AVQcuTjyhgkkzYpB
The other part you're talking about is massive erosion, and frankly the vast majority of rivers just don't have the energy to do that. You'd need APOCALYPTIC amounts of water to carve canyons like that. That kind of canyon is called a coulee, and was formed during the last ice age floods. Nick does a LOT of ice age flood stuff too. He does a whole breakdown of how rivers have moved and interacted through the geological changes in the PNW over the last very very long goddamn time.
https://youtu.be/0IjLO9ABKYU?si=FG0mj7xj3YxNIDzN
Fascinating that the riverbeds of the past can be the mountaintops of today.
Thanks a lot for the links! I’m still going through them. He has a great teaching style. I’m trying to find why in some cases canyons form and in others waterfalls. Of course you can have both, but it’s more common to have a waterfall sans canyon.
Buddy has been my go to sleep aid for years. After long enough, some of it starts to stick.