Sedimentary Rocks.
Usually it is metamorphic rocks that are formed by heat and pressure, but sedimentary rocks can too. Usually, the word 'sedimentary' means 'of sediments' which means that it is composed of lots of layers upon layers compacting down. In that case, pressure is essential, but heat isn't always needed.
by going under heat and pressure
Changes in the structure, texture, or mineralogy of existing rocks will create a metamorphic rock. Metamorphism can result from the effects of heat and/or pressure, or from the addition of ions from heated fluids. Examples of metamorphic rock are slate, schist, and gneiss.
milky quartz is either metamorphic or igneous
Heat, erosion and pressure.
Metamorphic rock is formed when Igneous rock and Sedimentary rock go through intense heat and pressure.
An igneous rock can change into a metamorphic rock with heat or pressure.
Sedimentary rock forms due to the accumulation and compression of sediments, while metamorphic rock forms due to the alteration of existing rock through heat and pressure. Igneous rock forms from the cooling and solidification of magma or lava.
An igneous rock forms when molten rock cools and solidifies. This can happen beneath the Earth's surface (intrusive) or at the surface (extrusive). The key factors for igneous rock formation are heat, pressure, and time.
Usually it is metamorphic rocks that are formed by heat and pressure, but sedimentary rocks can too. Usually, the word 'sedimentary' means 'of sediments' which means that it is composed of lots of layers upon layers compacting down. In that case, pressure is essential, but heat isn't always needed.
Heat and pressure
Well The Igneous Rock: When it Forms Underground the Pressure combines with Large crystals :)
if the igneous rock is put under heat and pressure it turns into a metamorphic
by going under heat and pressure
Igneous rock forms when molten minerals cool from a liquid into a solid. Metamorphics forms deep under earth's crust where it's really hot. Heat and pressure changes the rock's properties, eventually turning it into an metamorphic rock.
metamorphic rock
a rock that is created by heat (not melting or it will become igneous) and pressure