Characteristics of sedimentary rocks

♤ They are comparatively softer than the igneous rocks.

♤ They are made up of minute particles of various shapes and sizes.

♤ They have layers horizontally arranged one above the other.

♤ They have been mostly formed under water.

♤ They have mud cracks and marks of ripples and waves.

♤ They have fossils between the layers.

♤ Most of them are permeable and porous.

♤ Of all the sedimentary deposits, coal and petroleum are the most important ones.

♤ Modern industries depend on the products from the sedimentary rocks.