Here's a breakdown:
* Sediments: These are loose particles of rock, mineral fragments, and organic matter that have been weathered and eroded from existing rocks.
* Compaction: As sediments accumulate, the weight of overlying layers presses down, squeezing out water and air, causing the particles to pack together more tightly.
* Cementation: Dissolved minerals in groundwater precipitate between the sediment particles, acting like glue and binding them together.
Here are the major types of sedimentary rocks:
* Clastic sedimentary rocks: Formed from fragments of other rocks. Examples include:
* Conglomerate: Rounded fragments
* Breccia: Angular fragments
* Sandstone: Sand-sized grains
* Siltstone: Silt-sized grains
* Shale: Clay-sized grains
* Chemical sedimentary rocks: Formed from the precipitation of minerals from solution. Examples include:
* Rock salt (halite)
* Gypsum
* Limestone
* Organic sedimentary rocks: Formed from the accumulation and alteration of organic matter. Examples include:
* Coal
* Oil shale
These are just a few examples, and there are many other types of sedimentary rocks.
