granite

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Learn about the use of gamma-ray spectroscopy to identify the quarry that was the source of granite found in ancient Roman ruins

Glacial erratic perched on low pedestal of massive granite, Tulare county, Calif.

granite: photomicrograph

Whaleback outcroppings of Precambrian granite of the basement complex in the Matopo Hills, southwestern Zimbabwe.

Granite quarry at St. Cloud, Minnesota.

Figure 42: Granitic rock consisting of reddish orange feldspar, nearly white quartz, and green epidote that appears to have been introduced into an original quartz-feldspar granite. This rock, sometimes called unakite, is used widely in jewelry.

Discover

Young boys working in a thread spinning mill in Macon, Georgia, 1909. Boys are so small they have to climb onto the spinning frame to reach and fix broken threads and put back empty bobbins. Child labor. Industrial revolution

The Rise of the Machines: Pros and Cons of the Industrial Revolution

The Colosseum, Rome, Italy. Giant amphitheatre built in Rome under the Flavian emperors. (ancient architecture; architectural ruins)

New Seven Wonders of the World

Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.

10 Famous Artworks by Leonardo da Vinci

Town of Sisimiut located on the coast of the Davis Strait on Kangerluarsunnguaq Bay, Greenland

The Largest Islands in the World

African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.

Timeline of the American Civil Rights Movement

The Battle of New Orleans, by E. Percy Moran, c. 1910. Andrew Jackson, War of 1812.

26 Decade-Defining Events in U.S. History

Sydney New Years Eve Fireworks

Why Does the New Year Start on January 1?

granite: Related Content

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Photos and Videos

Glacial erratic perched on low pedestal of massive granite, Tulare county, Calif.

granite: photomicrograph

Whaleback outcroppings of Precambrian granite of the basement complex in the Matopo Hills, southwestern Zimbabwe.

Granite quarry at St. Cloud, Minnesota.

Figure 42: Granitic rock consisting of reddish orange feldspar, nearly white quartz, and green epidote that appears to have been introduced into an original quartz-feldspar granite. This rock, sometimes called unakite, is used widely in jewelry.

Learn about the use of gamma-ray spectroscopy to identify the quarry that was the source of granite found in ancient Roman ruins

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Topics

greisen aplite granophyre S-type granite I-type granite rapakivi felsic and mafic rocks intrusive rock rhyolite diabase gabbro anorthosite nepheline syenite peridotite picrite lamprophyre syenite dacite

Dig Deeper: More Articles That Discuss This Topic

Precambrian: Greenstones and granites

Key People

Hans Cloos

German geologist

Herbert Harold Read

British geologist

Quiz

Basalt sample returned by Apollo 15, from near a long sinous lunar valley called Hadley Rille. Measured at 3.3 years old.

(Bed) Rocks and (Flint) Stones

Cross section of Earth showing the core, mantle, and crust

The Solid Earth Quiz