Why Does Limestone Make Nonfoliated Marble

The limestone undergoes metamorhism to slate then phyllite and schist.

Why does limestone make nonfoliated marble.

Products made with limestone. One reason a metamorphic rock may not display foliation is that it is made up mainly of one type of mineral so that different minerals cannot separate and line up in layers. Limestone is an essential mineral commodity of national importance. Limestone vs marble.

But the limestone layer consisting just of calcite has undergone the same temperatures and pressures but remains unfoliated. Even though their chemical nature is almost similar to each other there are many differences between limestone and marble in the way they originate and the physical characteristics they possess. Marble is a non foliated metamorphic rock. During metamorphism the calcite limestone recrystallizes forming the interlocking calcite crystals that make up the marble.

The pressure applied to the reforming rock causes the differences in the way the rock looks once recrystallized and determines whether it will be foliated or nonfoliated. Metamorphic rocks that do not show foliation are called nonfoliated rocks. Both limestone and marble are types of rock made of calcium carbonate residues. Some of the many products made using limestone are shown in this photograph.

One common nonfoliated meta morphic rock is marble which develops from limestone. Marble is formed from limestone when the limestone is affected by heat and high pressure during a process known as metamorphism. Limestone has long fascinated earth scientists because of its rich fossil. Limestone is a sedimentary so it cannot be foliated or non foliated.

The major differences between foliated and nonfoliated metamorphic rocks are in the areas of texture appearance and the type of pressure applied during recrystallization. Nonfoliated does not have distinct layers or bands. And 2 mechanical transport and deposition of preexisting limestones forming clastic deposits. 1 biogenic precipitation from seawater the primary agents being lime secreting organisms and foraminifera.

Limestone has two origins. Travertine tufa caliche chalk sparite and micrite are all varieties of limestone.