They are sedimentary rocks.
limestone or sandstone
Sandstone, Limestone and Shale are all examples of sedimentary rock, formed by layer after layer of different types of water born sediment laid down over millions of years and compressed into rock. The different types of sediment determine which type of rock is formed, obviously sand being the main component of sandstone, mud can form shale. Igneous rock is rock formed by volcanic processes, different minerals in the molten rock will determine it's type, such as granite. Metamorphic rock is the third type of rock formed by extreme pressure and heat upon sedimentary rock, marble being formed from limestone, slate from shale.
sedimentary rock
In limestone and sandstone areas, especially, ground water filtering through the rock and dissolving the limestone or sandstone, creates potholes, caverns and caves.
Limestone is a sedimentary rock.
Sedimentary rock
There is no such ting as "lystone" Sandstone is a sedimentary rock. Limestone is a sedimentary rock of organic origin.
Sedimentary rock, such as limestone, chalk, slate and sandstone.
Sandstone and limestone and obsidion
Limestone, Sandstone, Shale
Sandstone is not an organic sedimentary rock, but limestone is.
limestone or sandstone
Sandstone is a sedimentary rock as is limestone. Marble is a non-foliated metamorphic rock and granite is a felsic intrusive igneous rock.
Sandstone is more commonly found in shoal areas due to its ability to withstand wave energy and erosion better than limestone. Sandstone is a coarse-grained sedimentary rock formed from cemented sand grains, while limestone is a softer, carbonate rock that can be more easily dissolved by water.
Limestone mostly, sometimes in shale and coal.
Limestone is porous and can absorb water, while sandstone is also porous but less absorbent than limestone. Granite is a denser and less porous rock, so it does not absorb water as readily as limestone or sandstone.
Limestone is not classed as either a granitoid or a sandstone rock. Limestone is a sedimentary rock, either chemically precipitated or bioclastic in origin. Granite is a plutonic igneous rock, and sandstone, although sedimentary, is formed from the cementation of sand-sized particles of eroded rock.