Should have been made of sand with a little pressure
No
There are many types of rock but this one would either be Sedimantary Igneous Metamorphic
thay both are apart of the rock cycle
Heat and pressure changes sedimantary rock (limestone) into metemorphic rock(gnesis).
eroded rock (from igneous, metamorphic, or sedimentary) settled. they compact together to form a rock. the rock that they form is known as sedimentary rock
yes, rocks change. metamorphic, sedimantary and igneous rocks can change into eachother.
When the sedimentary rock gets pressed with great pressure, it'll turn to metamorphic rock. Also, heating of the sedimentary rock by igneous intrusions will metamorphose it.
A river rock can be any type of rock, including sedimentary, igneous, or metamorphic. It depends on the geology of the area where the river rock was sourced from and subsequently deposited.
The weakest type of rock is generally considered to be shale, which is a fine-grained sedimentary rock composed of clay minerals. Shale is prone to breaking apart easily and has a low resistance to weathering and erosion compared to other types of rock.
North Wales is mainly upland because of the hard rock wich is built up on top of ach other (this is called Igneous rock), this is because of the hard rock does not wear away as easy as the soft rock (which is normally Sedimantary).
sedimantary
the fissils in the upper strata are younger than thos in the lower strata.