<Dd> When sand - sized particles are deposited, the space between the grains either remains open or is filled with mud (silt and / or clay sized particle). <Ul> <Li> "Clean" sandstones with open pore space (that may later be filled with matrix material) are called arenites . </Li> <Li> Muddy sandstones with abundant (> 10%) muddy matrix are called wackes . </Li> </Ul> </Dd> <Ul> <Li> "Clean" sandstones with open pore space (that may later be filled with matrix material) are called arenites . </Li> <Li> Muddy sandstones with abundant (> 10%) muddy matrix are called wackes . </Li> </Ul> <Li> "Clean" sandstones with open pore space (that may later be filled with matrix material) are called arenites . </Li> <Li> Muddy sandstones with abundant (> 10%) muddy matrix are called wackes . </Li>

What are the most common types of sedimentary rocks