If it is made of mainly one type of mineral or if it has not been subjected to high pressure. What conditions can cause a sedimentary or igneous rock to change into a metamorphic rock? Heat and pressure can break bonds in minerals, and the atoms can then join in new ways to make new minerals.

Thus Ancient sandstone beaches become buried deep beneath Earth’s surface, where they are exposed to extreme heat and pressure best describes the formation of metamorphic rocks.

Metamorphic rocks are formed by intense heat, intense pressure, or by the action of watery hot fluids (metamorphism). Any of the rock types in the rock cycle can be metamorphosed, or changed into a metamorphic rock (metamorphic rock can be metamorphosed again).

Rocks are better at weed-prevention than mulch and are also lower maintenance. Stones can also add to the aesthetics of a property. However, rock cover is not good for gardens that receive a lot of sun because they retain more heat than mulch.

Rocks are problematic not just because they make working the soil challenging but also because rocky soil tends to have fewer nutrients than other soils and holds water poorly.

As well as blocking weeds from growing, placing the right stones on top of soil will also help water drainage. By adding porous rocks on top of your soil, they will absorb a lot of the rain water. This gives the soil the opportunity to benefit from a respectable amount of water instead of way too much.

For the best drainage, look for coarse washed rock (gravel) that is screened, with a stone size of 1/2 to 3/4 inch. Smaller rock with fine particles could clog the holes of the drain pipe. Pea stone works, but the smooth stones settle together and don’t move as much water as coarse rock.