Not necessarily always sedimentary. It depends on the rock type of the surrounding rocks, which erode into the stream bed. It could be sed., metamorphic, or igneous.
there is big variety of stones on this planet ! which kind of stone ?
River rock can be composed of any rock type, or any combination of rock types.
No they are not. River rock is rounded and smooth where crushed rock is sharp and jagged.
Spall - A stone or rock splinter
a stone
As of 2014, Maryland does not have an official state rock. However, the state does have the Patuxent river stone as the official gemstone of the state.
Its not really a rock,But a stone, A sapphire is a clear auqa blue stone :D
There is no Official Rock, Mineral or Stone but it does have the Patuxent River Stone as the Official Maryland State Gem.
Your mother.
That rock is either a leaf stone or the emerald
Maryland has an Official Gem which is an agate called the Patixent River Stone but it has no Official Stone, Rock or Mineral.
stone and granite
rock
stone maybe
it formes SEDIMENTry rock
Rolling Stone is a music and entertainment magazine focusing on rock and roll.
Black stone