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Sealed granite is also stain-resistant. But as with quartz, edges and corners can chip, so it's worth considering a rounded edge if your kitchen gets a lot of use. Pros. Extremely durable.
Exfoliating slabs of granite, on Half Dome in Yosemite National Park, USA. Exfoliating granite is a granite undergoing exfoliation, or onion skin weathering (desquamation).The external delaminated layers of granite are gradually produced by the cyclic variations of temperature at the surface of the rock in a process also called spalling.
Exfoliation joints in granite at Enchanted Rock State Natural Area, Texas, US. Detached blocks have slid along the steeply-dipping joint plane. Exfoliation joints or sheet joints are surface-parallel fracture systems in rock, often leading to the erosion of concentric slabs.
Stone sealing is the application of a surface treatment to products constructed of natural stone to retard staining and corrosion. [1] All bulk natural stone is riddled with interconnected capillary channels that permit penetration by liquids and gases.
In order for the granite to be exposed at the Earth's surface a considerable thickness of rock must be eroded. This unloading allows the granite to expand radially and sheet fractures form tangentially to the radial stress. This indicates that the shape of the pre-existing land surface determines the geometry of the sheet fractures. [3]
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