Name: Rock Cycle
Uploaded: 2019-07-19
Duration: 4 min 48 s
Description: The formation of the rock is a cyclic process. Let us understand the rock cycle and learn the processes involved in the rock formation.

Question

Limestone is changed into marble. Give Reason.

Accepted Answer

Limestone can be transformed into marble through a geological process known as metamorphism. Metamorphism occurs when pre-existing rocks, such as limestone, are subjected to high temperature, pressure, and chemical changes within the Earth's crust. Several factors contribute to the transformation of limestone into marble:

Heat and Pressure: During metamorphism, limestone is subjected to intense heat and pressure deep within the Earth's crust. These conditions cause the minerals in limestone to recrystallize and reorganize, resulting in the formation of new minerals and textures characteristic of marble.

Mineral Changes: The main mineral in limestone, calcite (calcium carbonate), undergoes recrystallization during metamorphism. Under high pressure and temperature, calcite grains are reoriented and often grow larger, forming interlocking crystals of calcite or related minerals like dolomite. This process contributes to the characteristic crystalline structure and smooth texture of marble.

Limestone is changed into marble. Give Reason.

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