Marble Is A Foliated Metamorphic Rock

Marble composed of the mineral calcite.

Marble is a foliated metamorphic rock.

Marble is a metamorphic rock composed of recrystallized carbonate minerals most commonly calcite or dolomite. The rock on the right is foliated. Marble is a non foliated metamorphic rock which is composed of recrystallized carbonate which is formed when limestone is exposed to high temperatures and pressures over a long time. Sandstone is defined as a rock which is composed of sand sized grains of various minerals mostly of uniform size and often are smooth and rounded.

Quartzite composed of the mineral quartz. Marbles are the type of metamorphic rock that results. Metamorphic rocks arise from the transformation of existing rock types in a process called metamorphism which means change in form. Both foliated and nonfoliated rocks begin their lives as either sedimentary igneous or another metamorphic rock.

In geology the term marble refers to metamorphosed limestone but its use in stonemasonry more broadly encompasses unmetamorphosed limestone. The rock on the right has randomly arranged grains. Due to geological changes a metamorphic rock of the foliated or nonfoliated type will be created. Which statement about the rocks is accurate.

Layers or bands found in metamorphic rock 1. Physical chemical or structural change. Nonfoliated metamorphic rocks are identified on the basis of their composition. It is composed primarily of calcium carbonate.

Changes in rocks caused by magma seeping into crustal rock. It is composed primarily of the mineral calcite caco 3 and usually contains other minerals such as clay minerals micas quartz pyrite iron oxides and graphite. Protoliths are usually granites rhyolites or arkose sandstones and metamorphism results in gneisses containing an abundance of quartz feldspar and biotite. The rock on the left formed from granite.

Occurs at high temperature and low pressure 6. Occurs at low to high temperatures and high pressure 3. Marble is typically not foliated although there are exceptions. The original rock is subjected to heat temperatures greater than 150 to 200 c and pressure 100 megapascals 1 000 bar or more causing profound physical or chemical change the protolith may be a sedimentary igneous or existing metamorphic rock.

Quartzo feldspathic rocks that contain an abundance of quartz and feldspar fall into this category. Marble is a non foliated metamorphic rock that is produced from the metamorphism of limestone or dolostone. Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism. These geological changes can be due to heat and temperature from the recrystallizing rock being found deep within the earth s crust.

These are two metamorphic rocks.