Gravity, erosional forces, water transportation, ice transportation.
The absolute age of a stream can be estimated using radiometric dating of rocks found along its path. By analyzing the isotopic composition of these rocks, scientists can determine when they formed and thereby establish the age of the stream. This method allows for accurate dating of the stream's formation based on the age of the rocks in its vicinity.
In a stack of rock layers, the oldest layers are usually found at the bottom, while the youngest layers are found at the top. This is due to the principle of superposition, which states that in an undisturbed sequence of sedimentary rocks, the oldest rocks will be at the bottom and the youngest rocks at the top.
Older fossils may not always be found at the bottom layers of rocks due to geological processes like folding, faulting, or erosion, which can disrupt the original order. In these cases, older fossils may be found at higher layers while younger fossils are found in lower layers.
Sedimentary rocks are found generally at the bottom of an ocean as this is where eroded material falls. Igneous rocks are found near volcanoes as they are molten rock. Metamorphic rock can be found anywhere, as it is formed in the ground and slowly comes up to the surface (but it is made of igneous or sedimentary rocks.)
A stream with gravel and rocks typically has a higher sediment load. The presence of gravel and rocks indicates that the stream has the ability to transport larger particles, which increases its sediment load compared to streams with smaller particles like sand or silt.
Potholes form in the stream bottom through erosion caused by water and rocks and wildlife.
In rock layers, the oldest rocks are typically found at the bottom. This is due to the principle of superposition, which states that in an undisturbed sequence of sedimentary rocks, the oldest rocks are deposited first and are at the bottom, while the youngest rocks are at the top.
rocks
Old rocks! New or young rocks are at the top!
The absolute age of a stream can be estimated using radiometric dating of rocks found along its path. By analyzing the isotopic composition of these rocks, scientists can determine when they formed and thereby establish the age of the stream. This method allows for accurate dating of the stream's formation based on the age of the rocks in its vicinity.
Sediment that is carried by a stream along the bottom of its channel.
A stream bed is the bottom (floor) of the stream.
Silt is one type of material found on the bottom of a stream. Silt is fine and can be carried along in moving water, but is heavyier than water, so settles out of the water as it slows. It can be organic or mineral.
Sedimentary rocks are made by sediment that has sat over time. Most of theses rock are found at the bottom of lakes and oceans.
In a stack of rock layers, the oldest layers are usually found at the bottom, while the youngest layers are found at the top. This is due to the principle of superposition, which states that in an undisturbed sequence of sedimentary rocks, the oldest rocks will be at the bottom and the youngest rocks at the top.
I think you are talking about a groove cast. Groove casts form in the bottom of a stream when transported sediment is dragged along a mud bottom.
Liverworts r often found growing as a thick crust on moist rocks or soil along the sides of a stream..