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Which discontinuity marks the primary boundary between the Earth’s lower mantle and outer core?

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By Zain
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Source Earth Science Knowledge Database
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Fact Checked
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Difficulty Hard
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Published 13 Feb 2026
📚 Topics: Earth Science Science
🎯 Exams: CSS GEN NTS PMS UK_CS US_COMP
🏷️ Tags: Core Earth Structure Geophysics Mantle Seismology

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