Between a rock and a hard place
This pair of forces is responsible for turning any existing rock into a metamorphic rock.
What are heat and pressure?
This cycle of rock formation has no beginning and no end and is continually changing rocks from one form to another.
What is the rock cycle?
When molten material from a volcano or from deep inside the earth cools it forms this type of rock.
What is an igneous rock?
Loose materials such as rock fragments, mineral grains, and bits of organic material that have been transported.
This is the most common type of rock on earth.
What is Igneous?
This type of texture is created when mineral grains flatten under pressure and line up in parallel bands.
What is foliated?
If sedimentary rock undergoes heat and pressure, it can be changed to form this type of rock.
What is metamorphic?
When magma cools slowly, atoms arrange into large crystals called this.
What are mineral grains?
Sedimentary rocks that form from fragments of other rocks are called this.
What are clastic rocks?
This type of metamorphic rock has mineral grains that change, grow and rearrange but do not form bands.
What is nonfoliated?
What is compaction?
Igneous rock is formed by the melting and cooling of this substance.
What is magma?
Quickly cooling magma forms this type of igneous rock.
What is extrusive?
Sedimentary rocks often form as these?
What are layers?
75% of rock on earth's surface is this type of rock.
Metamorphic rocks form without this process, which separates them from igneous rocks.
What is melting?
This duo of forces must happen to any rock before they can be turned into sedimentary rock.
What is weathering and erosion?
This type of element is responsible for the thermal energy under earth's surface that heats rock into magma.
What is radioactive?
When rocks form from the remains of once-living things they are classified as this type of sedimentary rock.
What is Organic?
Minerals that are dissolved in this are also sediments.
What is water?
What is Granite?
This process is necessary to "glue" large sediments together when pressure alone is not enough to form sedimentary rock.
What is cementation?
This category of igneous rock is characterized by dense, heavy, dark colored rocks that have lots of iron and magnesium.
What is basaltic?
Chemical sedimentary rocks form when minerals are left behind as a solution evaporates or when minerals do this out of the solution.”
What is precipitate?
A mixture of minerals, mineraloids, glass and organic matter.
What is a rock?