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Igneous rock

Igneous rocks are formed when molten rock (magma) cools and solidifies, with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.

Note: This article excerpts material from the Wikipedia article "Igneous rock", which is released under the GNU Free Documentation License.

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last updated on 2015-03-28 at 10:30 am EDT

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Chongqing Breaks Ground on Rock Carving Museum

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Xinhua News Agency (Apr. 18, 2011) China's Chongqing principality has begun construction of a museum for more than 50,000 individual rock carvings, dating from the 9th to 13th centuries. The Dazu Rock Carvings have been on the World Heritage List since 1999.
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Billion Dollar Drilling Project Aims for Earth's Mantle

Billion Dollar Drilling Project Aims for Earth's Mantle

Reuters (Jan. 8, 2013) A Japanese-led project aims to drill to the Earth's mantle, a 3000 kilometer-thick layer of slowly deforming rock between the crust and the core. In its early stages, the $US1 billion mission would deploy a drill just 30 centimeters wide to bore into the Earth's crust to bring back the first ever samples of fresh mantle rock.
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Ecological and Political Fears Cloud Poland's Shale Gas Hopes

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France 24 (July 3, 2013) Over the past ten years, the US success in extracting gas from shale rock deep underground has transformed its energy landscape. Several countries in Europe, including France and Poland, are believed to have huge reserves too. American geologists initially said Poland could be sitting on enough gas to supply domestic need for 300 years, sparking a "gas rush". But only six wells have been hydraulically fractured so far and geologists fear their initial calculations may have been too optimistic.
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