Recent questions tagged magma

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________ is the most abundant gaseous component dissolved in most magmas.

asked Jun 23, 2022 in World by voice (257k points)

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Basalt is the most common magma erupted along oceanic rift systems.

asked Jun 23, 2022 in World by voice (257k points)

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Most basaltic magmas are believed to form by partial melting of granite in the lower crust and upper mantle.

asked Jun 23, 2022 in World by voice (257k points)

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Magma generation at depth almost always involves partial melting, not complete melting of the source rock.

asked Jun 23, 2022 in World by voice (257k points)

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The viscosities of magmas increase with increasing percentages of silica.

asked Jun 23, 2022 in World by voice (257k points)

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Dissolved gases may comprise up to a few percent by weight of a magma.

asked Jun 23, 2022 in World by voice (257k points)

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Xenoliths are associated most closely with which magmatic process and igneous rockbody?

asked Jun 23, 2022 in World by voice (257k points)

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Why do magmas rise toward Earth's surface?

asked Jun 22, 2022 in World by voice (257k points)

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Which one of the following shows the correct order (left to right) of decreasing magma viscosity?

asked Jun 22, 2022 in World by voice (257k points)

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Which one of the following statements is not true?

asked Jun 22, 2022 in World by voice (257k points)

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Which one of the following statements concerning volcanic blocks and bombs is true?

asked Jun 22, 2022 in World by voice (257k points)

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________ tend to increase the explosive potential of a magma body beneath a volcano.

asked Jun 21, 2022 in World by voice (257k points)

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Pockets of magmas can be formed by the melting of deep continental crust heated by the intrusion of other magmas.

asked Jun 21, 2022 in World by voice (257k points)

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________ magma is the most abundant type of erupted at oceanic spreading centers.

asked Jun 21, 2022 in World by voice (257k points)

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Volcanic bombs originate ________.

asked Jun 21, 2022 in World by voice (257k points)

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________ is a major dissolved volatile constituent in both magmas and volcanic gases?

asked Jun 21, 2022 in World by voice (257k points)

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