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Summary
Geothermal gradient (change in temperature with depth). Left- Geothermal gradient in the crust and upper mantle. The geothermal gradient remains below the melting temperature of rock, except in the asthenosphere. There, temperatures are high enough to melt some of the minerals. Right- Geothermal gradient throughout Earth. Rapid changes occur in the uppermost mantle, and at the core-mantle boundary. The red dashed line shows the minimum temperature at which dry mantle rocks will melt. Date 2018 Source https://pressbooks.bccampus.ca/physicalgeologyh5p/chapter/3-3-earths-interior-heat/ Author Karla Panchuk (2018), modified after Steven Earle (2016).
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:11, 23 October 2023 | | 1,054 × 720 (365 KB) | Isidore (talk | contribs) | Geothermal gradient (change in temperature with depth). Left- Geothermal gradient in the crust and upper mantle. The geothermal gradient remains below the melting temperature of rock, except in the asthenosphere. There, temperatures are high enough to melt some of the minerals. Right- Geothermal gradient throughout Earth. Rapid changes occur in the uppermost mantle, and at the core-mantle boundary. The red dashed line shows the minimum temperature at which dry mantle rocks will melt. Date 201... |
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