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1. en.wikipedia.org › wiki › Rock_(geology)Rock (geology) - Wikipedia

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   Rocks form the Earth's outer solid layer, the crust, and most of its interior, except for the liquid outer core and pockets of magma in the asthenosphere. The study of rocks involves multiple subdisciplines of geology, including petrology and mineralogy.

2. www.nationalgeographic.com › science › articleRocks Information and Facts | National Geographic

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   There are three basic types of rock: igneous, sedimentary, and metamorphic. Extremely common in the Earth's crust, igneous rocks are volcanic and form from molten material. They include not...

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4. geology.com › rocksRocks: Pictures of Igneous, Metamorphic and Sedimentary Rocks -...

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   Rocks hold the history of the earth and the materials that will be used to build its future. Igneous Rocks: Photos, descriptions and facts about intrusive and extrusive igneous rocks. Andesite. Basalt. Dacite. Diabase. Diorite. Gabbro. Granite. Obsidian. Pegmatite. Peridotite. Pumice. Rhyolite. Scoria. Tuff. Unakite.

5. www.nationalgeographic.org › encyclopedia › rock-cycleThe Rock Cycle - National Geographic Society

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   13. Dez. 2023 · The rock cycle is a series of processes that create and transform the types of rocks in Earth’s crust. Grades. 5 - 8. Subjects. Chemistry, Earth Science, Geology. ‌. Loading ... Article. Vocabulary. There are three main types of rocks: sedimentary, igneous, and metamorphic.

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     Identifying Sedimentary Rocks -- Earth Rocks!

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     Identifying Igneous Rocks -- Earth Rocks!

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     Identifying Metamorphic Rocks -- Earth Rocks!

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7. www.britannica.com › science › rock-geologyRock | Definition, Characteristics, Formation, Cycle,...

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   6. Mai 2024 · Rock, in geology, naturally occurring and coherent aggregate of one or more minerals. Such aggregates constitute the basic unit of which the solid Earth is composed and typically form recognizable and mappable volumes. The three major classes of rock are igneous, sedimentary, and metamorphic rock.

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8. www.nationalgeographic.org › encyclopedia › earthEarth - National Geographic Society

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   30. Apr. 2024 · The rocks and minerals in Earth’s lithosphere are made of many elements. Rocks with oxygen and silicon, the most abundant elements in the lithosphere, are called silicates. Quartz is the most common silicate in the lithosphere—and the most common type of rock on Earth. Cycles on Earth. Almost all materials on Earth are constantly being ...

9. science.nasa.gov › earth › factsFacts About Earth - NASA Science

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   We're On It - Earth is a rocky planet with a solid and dynamic surface of mountains, canyons, plains and more. Most of our planet is covered in water. Breathe Easy - Earth's atmosphere is 78 percent nitrogen, 21 percent oxygen and 1 percent other ingredients—the perfect balance to breathe and live.