What Causes Differences In Weathering For Marble

Exposure to air or water changes the.

What causes differences in weathering for marble.

The main difference between weathering and erosion lies in where the process takes place. Types of gravestones or environments with particular weathering processes. Weathering breaks down and loosens the surface minerals of rock so they can be transported away by agents of erosion such as water wind and ice. Consequently they suffer from different deterioration processes mainly dissolution in rain 1 and thermal weathering 2 in the case of marble and stress from crystallization of ice and salts.

Erosion on the other hand causes rocks or particles of rock to be carried away from their original locations and deposited elsewhere. The image on the right shows a close up of the raised lettering on the surface of the grave stone. Weathering causes the disintegration of rock near the surface of the earth. Physical weathering separates a rock s physical structure.

Several different headstones pref erably of different rock types can be studied in detail. In its pure form marble is a white stone with a crystalline and sugary appearance consisting of calcium carbonate caco 3 usually marble contains other minerals including quartz graphite pyrite and iron oxides these minerals can give marble a pink brown gray green or variegated coloration. Weathering occurs when the physical and chemical characteristics of rocks found on the earth s surface undergo change. The larger intercept values for limestone as compared to marble show that the water in contact with limestone more closely approaches the equilibrium concentration of 0 55 mmol l due to limestone s greater porosity and larger surface area.

The primary difference between weathering and erosion in points is given below. Let us compare and contrast weathering and erosion in detail. Types of weathering there are two unmistakable kinds of weathering which modify and corrupt rock in various manners. Different types of stone can react in different ways to the same sets of weathering agents and can produce different weathering forms even in the same environment.

Limestone versus marble differences in chemical erosion. Pollution is cited as a cause of high historic losses. Drawings or photos of areas of a headstone which show signs of the main weathering processes can be la belled to point out the differences between freeze thaw chemical and. This marble gravestone has lead lettering similar to that of the john walker memorial.

Ing weathering close attention to individual headstones works well. Marble is a metamorphic rock formed when limestone is subjected to high pressure or heat. Where is the tate family grave. The two thus provide a useful direct comparison of weathering rates between different lithologies.