Podcast
Questions and Answers
Which type of rock is rich in alkali feldspar?
Which type of rock is rich in alkali feldspar?
- Basalt
- Anorthosite
- Andesite
- Aplite (correct)
Which type of rock is magnesium- and iron-rich?
Which type of rock is magnesium- and iron-rich?
- Basalt (correct)
- Andesite
- Anorthosite
- Aplite
Which type of rock is volcanic and has a crumpled appearance?
Which type of rock is volcanic and has a crumpled appearance?
- ʻAʻā (correct)
- Andesite
- Aplite
- Pāhoehoe
Which type of rock is mafic intrusive and composed predominantly of plagioclase?
Which type of rock is mafic intrusive and composed predominantly of plagioclase?
Which type of rock is a type of volcanic rock?
Which type of rock is a type of volcanic rock?
Який тип скель найбільш правильний?
Який тип скель найбільш правильний?
Який тип скель є типом вулканічних скель?
Який тип скель є типом вулканічних скель?
Який тип скель є мафічним інтрузивним та складається переважно з плагіоклазу?
Який тип скель є мафічним інтрузивним та складається переважно з плагіоклазу?
Який тип скель має вулканічний походження та має зморшковий вигляд?
Який тип скель має вулканічний походження та має зморшковий вигляд?
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Study Notes
Types of Rocks
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Granite: Rich in alkali feldspar; commonly used in construction due to durability and aesthetics.
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Basalt: Magnesium- and iron-rich; a dense volcanic rock that is often dark in color and forms from rapid cooling of lava.
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Rhyolite: Volcanic rock characterized by a crumpled appearance, indicating a highly viscous molten state before solidification.
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Gabbro: Mafic intrusive rock mainly composed of plagioclase, as well as pyroxene and sometimes olivine; forms from slow cooling of magma beneath the Earth's surface.
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Obsidian: A type of volcanic rock known for its glassy texture and typically dark color, formed from rapidly cooled lava.
Additional Information
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Sedimentary Rocks: Not primarily mentioned, but are formed through the accumulation of sediments, differentiated from the discussed igneous rocks.
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Importance of Rock Types: Understanding rock types aids in geology, construction, and resource identification.
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