Questions tagged [erosion]
The movement of materials such as rocks, sands, and soils from and along the Earth's surface due to physical processes such as, but not limited to, rain, ice, wind, and gravity.
50 questions
5
votes
1
answer
121
views
What is concave side of mountain, when viewed from front, called?
I am looking for exact term which is used to refer to concave side of mountain. I did some research and got following information, but they resemble in some degree of closeness (not exactly) that I am ...
- 151
4
votes
1
answer
225
views
What is this turtle shell pattern and why does it form on sandstone?
What is the name of the brain or turtle shell pattern on the sandstone in this picture? Why does it form, and how common is it?
I've noticed similar patterns on boulders in Fontainebleau, France, and ...
- 141
1
vote
0
answers
115
views
Raindrop splash/splatter dynamics
I'm interested in the physics/dynamics of a drop of water (2-5 mm dia) dropped from a height (terminal velocity is the limit) on smooth hydrophobic surfaces. Specifically the largest diameter of ...
user28036
1
vote
1
answer
852
views
How fast can water erode stone?
Is there a way to know, how fast can water erode stone? I mean, if I just put a single stone and drip water on it 24/7, how soon will erosion become noticable?
I've seen a video about "15,25 and ...
- 11
4
votes
0
answers
61
views
Did the Vredefort Crater fill in soon after impact?
The Vredefort Crater is said to have been 40km deep and 100km wide. But what I'm curious about, is how long it retained that shape. Would magma have immediately leaked into it and filled it, for ...
- 41
4
votes
1
answer
110
views
Do any spike-like "cemented fillings of ancient fractures in a sedimentary rock", remotely similar to this one on Mars, occur on Earth?
The SETI Institute recently tweeted the image below, with the text:
#PPOD: Here is another cool rock at Gale crater on Mars! The spikes are most likely the cemented fillings of ancient fractures in a ...
- 7,064
6
votes
2
answers
191
views
Can "meanders in meanders" form naturally?
I recently rafted the San Juan river in Southern Utah, which flows into the Lake Powell reservoir. When the water levels in Lake Powell were very high, it extended far upstream into the San Juan ...
- 203
1
vote
1
answer
251
views
How large is the chance that the Badlands Guardian emerged from natural processes?
The Badlands Guardian is a geomorphological feature; see this website. According to Wikipedia, this figure has been created by natural processes. However, my intuition says that the chance that this ...
- 141
6
votes
1
answer
121
views
Why are symmetrical three-sided pyramidal peaks so common?
High alpine pyramidal peaks formed by cirque-carving glaciers very commonly (not always) have three nearly symmetrical faces and corresponding ridges spaced roughly 120 deg. apart. This is easily ...
- 310
4
votes
2
answers
149
views
How do canyons form?
I read that canyons are the result of long-time erosion from a plateau but is there any simulation I could play with to understand the phenomenon better?
- 143
4
votes
0
answers
63
views
Why is the delta part of Jezero crater higher than the surroundings?
In images of Jezero crater on Mars, it looks like the delta fan is higher than the surrounding crater floor.
This indeed seems to be the case with closer-up images from the Perseverance rover taken ...
- 475
4
votes
0
answers
57
views
How can I estimate capacity, erosion rate, and deposit rate of a stream?
I am attempting to create a very simple hydraulic erosion simulation against a heightmap.
I am using Manning's equation to calculate velocity and discharge. I have taken samples of Hjulstrom's ...
- 141
1
vote
1
answer
137
views
How does the west coast of Japan have cliffs?
In Ireland, sea cliffs tend to be on the west coast, because it's exposed to waves coming across the full width of the Atlantic, and therefore gets a lot of erosion, whereas the east coast is only ...
- 705
4
votes
1
answer
2k
views
What will happen to the Indian plate after it slides under the Eurasian Plate?
What will happen if the Indian Plate is done sliding under the Eurasian plate? I hypothesied some possible answers. Tell me the answer and if my hypothesis is not correct.
Most likely to least.
It ...
- 572
2
votes
0
answers
70
views
Prevalence of 'well-rounded' beach fabric on the Foreshore
Apologies for the vagueness of this query, but generally, would it be plausible to state that the prevalence of 'sub-rounded'* beach fabric is more common at the foreshore than 'sub-angular'* beach ...
- 41