Questions tagged [magmatism]
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questions with no upvoted or accepted answers
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What causes a change in composition from basanite to nephelinite?
Can the change in composition from basanite to nephelinite (i.e. increasing alkalis with decreasing SiO2) be explained in terms of fractional crystallisation, or only by a decreasing degree of partial ...
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Does each volcano have a fingerprint?
Thinking about arc volcanism in a region, and there are two neighboring composite volcanoes 50 km apart from each other.
Do you expect any differences about their products (lavas, pyroclastic deposits)...
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Where are the youngest and oldest subduction zones in the world? Is the dip of the subducting slab proportional with the age of subduction?
I want to learn where the youngest subduction is in the world. Where is the most recently started subduction zone? (The most recent place on Earth that arc magmatism has started)
And the oldest ...
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What is solidus and liquidus temperature of granite?
My understanding is that because a rock is composed of variety of minerals, so it does not have fix melting point, rather there is a range below which whole rock is solid and above which whole rock is ...