What Causes Differences In Weathering For Marble
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.
What causes differences in weathering for marble. The two thus provide a useful direct comparison of weathering rates between different lithologies. Exposure to air or water changes the. The agents affecting these changes are various components of water found in the earth s hydrosphere or gaseous substances from the atmosphere. Pollution is cited as a cause of high historic losses.
Several different headstones pref erably of different rock types can be studied in detail. Where is the tate family grave. 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. 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.
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. Limestone versus marble differences in chemical erosion. Weathering occurs when the physical and chemical characteristics of rocks found on the earth s surface undergo change. The primary difference between weathering and erosion in points is given below.
Ing weathering close attention to individual headstones works well. The image on the right shows a close up of the raised lettering on the surface of the grave stone. The main difference between weathering and erosion lies in where the process takes place. Marble is a metamorphic rock formed when limestone is subjected to high pressure or heat.
Weathering degrades a rock without changing its location. Physical weathering separates a rock s physical structure. Plant and animal life atmosphere and water are the major causes of weathering. Weathering causes the disintegration of rock near the surface of the earth.
Types of gravestones or environments with particular weathering processes. 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. 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. Let us compare and contrast weathering and erosion in detail.