Either it's still a river or it's a dried river. Plus, any river has probably not been around for more than 10,000 years.
The process of a rock turning into sand through weathering and erosion can take thousands to millions of years, depending on factors such as the type of rock, climate, and environmental conditions. The rock is broken down into smaller particles over time through processes like wind, water, and temperature changes.
Mud compacts and hardens over millions of years to form sedimentary rock, such as shale or mudstone. The pressure and heat from the layers above accelerate the process of lithification, transforming the mud into solid rock.
Mountains break down over time due to various weathering processes such as freezing and thawing, erosion by wind and water, and the actions of plants and animals. As the rock is broken into smaller pieces, it forms gravel, sand, and eventually soil through a process called erosion. This process can take thousands to millions of years.
It typically takes millions of years for sediment to be buried, compacted, and cemented into sedimentary rock. The exact timeframe can vary based on factors such as the type of sediment and geological conditions.
Over time, geological forces such as tectonic plate movement and volcanic activity can cause the Earth's crust to shift and uplift, transforming a plain into a mountain. This process usually takes millions of years to occur.
If put under tremendous pressure for millions of years - which is what happened to slate and sandstone.
If it died near a river, the bones might end up in the river by the water. The sand and waves will smooth out the dinosaurs' bones. In hundreds of years... The bones will turn into sand.
Millions and millions of years.
mjubyyhujik
By being petrified over millions of years.
A miandering river, I would say, is one that bends or 'mianders'. A miander is a turn in a river where you sometimes find a small sand back, this is because as a part in the river turns, the water slows down and leaves behind rocks, pebbles, sand, dirt..etc that it was carrying.
after millions of years they turn in to fossils flues/ oil ,and gas
they don't turn rocks into sand
The process of a rock turning into sand through weathering and erosion can take thousands to millions of years, depending on factors such as the type of rock, climate, and environmental conditions. The rock is broken down into smaller particles over time through processes like wind, water, and temperature changes.
It got its name from the yellow particles in its sand, originating from the Yellow River.
I suppose it depends where the sand came from .The contaminants may float to the bottom. I recommend that you clean it. 2. Sand alongside a river will almost always carry some clay with it. Beach sand, because of the continuous action of the waves, will usually be free from clays.
you turn into sand