Interior of Earth Youtube Lecture Handouts

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Interior of the Earth: 3 Divisions and 5 Discontinuities

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INTERIOR OF THE EARTH

Co Mr. WG Lehmann

  • Co: Conard Discontinuity (Between Outer & Inner Crust)

  • M: Mohorovicic Discontinuity (Between Crust & Mantle)

  • R: Repetiti Discontinuity (Between Outer & Inner Mantle)

  • WG: Weichart-Gutenburg Discontinuity (Between Mantle & Core)

  • Lehmann: Lehmann Discontinuity (Between Outer & Inner Core)

Mechanical Division

  • Lithosphere: Constitutes 80-100 km in depth & made of plates.

  • Asthenosphere: Next 100-200 km; it is a low velocity zone with more plastic & less viscous constituents.

  • Mesosphere: Whole of the mantle

  • Barysphere: Core

HOLMES

  • SIAL

  • SIMA

Van de Gracht’s Classification

Van de Gracht’s Classification

Van De Gracht’S Classification

Van de Gracht’s Classification

Daly’s Classification

Daly’s Classification

Daly’S Classification

Daly’s Classification

Jeffrey’s Classification (Rock Type)

  • Outer Layer - Sedimentary

  • 2nd Layer - Granite

  • 3rd Layer - Diorite (dark grey intermediate intrusive igneous rock)

  • 4th Layer - Eclogite