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Intrusive rocks are formed when molten magma cools down deep inside the earth's crust.
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SUPPORTED
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Is it true that Intrusive rocks are formed when molten magma cools down deep inside the earth's crust?
Yes. Intrusive (plutonic) rocks form when molten magma cools and solidifies beneath the Earth's surface within the crust, a foundational concept supported by geological literature.
Verdict: SUPPORTED · 2 sources for, 0 against · Last checked
Evidence for · 2
This study discusses the slow cooling rates and timescales of shallow crustal plutonic rocks, which are intrusive igneous formations.
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Grocolas, T., Müntener, O., Bloch, E. M., Escrig, S., Ulyanov, A., & Bouvier, A. (2025). Cooling rates and melt extraction timescales determined by diffusion chronometry on shallow crustal plutonic rocks. doi.org. https://doi.org/10.1007/s00410-025-02238-0
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This paper investigates deep crustal basaltic magma chambers and intrusive processes that form large plutonic bodies.
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C, A., R, L., S, C., AR, C., & TFD, N. (2022). Catastrophic growth of totally molten magma chambers in months to years.. doi.org. https://doi.org/10.1126/sciadv.abq0394
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