Geography · Earth Internal Structure

The boundary or discontinuity separating the continental upper crust (SIAL) and the lower crust (SIMA) is known as:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1Mohorovicic discontinuity
2Conrad discontinuity✓
3Gutenberg discontinuity
4Lehmann discontinuity

Correct answer

Conrad discontinuity

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The boundary or discontinuity separating the continental upper crust (SIAL) and the lower crust (SIMA) is known as:

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The boundary or discontinuity separating the continental upper crust (SIAL) and the lower crust (SIMA) is known as:

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