How sandstone shale and limestone form?

Answer 1

Limestones are form by precipitation of rusually under water

Sandstones are formed from sendiments that are being eroded and compacted and cemented together.

Shale are formed from precipation also but you often see fossil records on them.

Answer 2

Sandstone forms from the gradual accumulation and cementation of sand grains. Shale forms from the compaction of clay and silt particles. Limestone forms primarily from the accumulation of skeletal fragments of marine organisms such as coral and shellfish.