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Spotlight Featured Personality Marshall Gerometta is "the brain" when it comes to heights. As a veteran in the field, he also maintains the world's official list of the tallest skyscrapers.
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Since 30 years

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Featured activity SKYDB Awards The best skyscrapers of the world. Selected every year by SKYDB and its community members.
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177,282 tall buildings

DEFINITION

sandstone

A soft, easily carved rock formed from pressurized deposits of sand.

Definitions

Sandstone is a sedimentary rock typically formed at the sites of ancient beaches or sand deposits. The rock is composed of individual grains of sand (usually quartz) cemented together. Formation occurs under pressure when the grains dissolve partially and become cemented together by the liquified silica. Under higher heat or pressure the same minerals will metamorphosize into quartzite.

Sandstone is softer than many other rocks, and easily carved. As a building facade it is valued for its textural properties and attractive natural colors. Common impurities such as iron, feldspar, hematite, and mica give it a variety of different colors, including yellowish, brown, and red.

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