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- Geothermal_gradient abstract "Geothermal gradient is the rate of increasing temperature with respect to increasing depth in the Earth's interior. Away from tectonic plate boundaries, it is about 25 °C per km of depth (1 °F per 70 feet of depth) in most of the world. Strictly speaking, geo-thermal necessarily refers to the Earth but the concept may be applied to other planets. The Earth's internal heat comes from a combination of residual heat from planetary accretion, heat produced through radioactive decay, and possibly heat from other sources. The major heat-producing isotopes in the Earth are potassium-40, uranium-238, uranium-235, and thorium-232. At the center of the planet, the temperature may be up to 7,000 K and the pressure could reach 360 GPa(3.6 million atm). Because much of the heat is provided by radioactive decay, scientists believe that early in Earth history, before isotopes with short half-lives had been depleted, Earth's heat production would have been much higher. Heat production was twice that of present-day at approximately 3 billion years ago, resulting in larger temperature gradients within the Earth, larger rates of mantle convection and plate tectonics, allowing the production of igneous rocks such as komatiites that are not formed anymore today.".
- Geothermal_gradient thumbnail Temperature_schematic_of_inner_Earth.jpg?width=300.
- Geothermal_gradient wikiPageExternalLink chap9b.htm.
- Geothermal_gradient wikiPageID "2554979".
- Geothermal_gradient wikiPageRevisionID "606315266".
- Geothermal_gradient hasPhotoCollection Geothermal_gradient.
- Geothermal_gradient subject Category:Geodynamics.
- Geothermal_gradient subject Category:Geological_processes.
- Geothermal_gradient subject Category:Geothermal_energy.
- Geothermal_gradient subject Category:Structure_of_the_Earth.
- Geothermal_gradient type GeologicalProcess113486838.
- Geothermal_gradient type GeologicalProcesses.
- Geothermal_gradient type NaturalProcess113518963.
- Geothermal_gradient type PhysicalEntity100001930.
- Geothermal_gradient type Process100029677.
- Geothermal_gradient comment "Geothermal gradient is the rate of increasing temperature with respect to increasing depth in the Earth's interior. Away from tectonic plate boundaries, it is about 25 °C per km of depth (1 °F per 70 feet of depth) in most of the world. Strictly speaking, geo-thermal necessarily refers to the Earth but the concept may be applied to other planets.".
- Geothermal_gradient label "Geotherm".
- Geothermal_gradient label "Geothermal gradient".
- Geothermal_gradient label "Geothermische Tiefenstufe".
- Geothermal_gradient label "Gradient geotermiczny".
- Geothermal_gradient label "Gradient géothermique".
- Geothermal_gradient label "Gradiente geotermico".
- Geothermal_gradient label "Gradiente geotérmico".
- Geothermal_gradient label "Gradiente geotérmico".
- Geothermal_gradient label "Геотермический градиент".
- Geothermal_gradient label "مدرج الحرارة الأرضية".
- Geothermal_gradient label "地温勾配".
- Geothermal_gradient sameAs Geothermische_Tiefenstufe.
- Geothermal_gradient sameAs Gradiente_geotérmico.
- Geothermal_gradient sameAs Gradient_géothermique.
- Geothermal_gradient sameAs Gradien_panas_bumi.
- Geothermal_gradient sameAs Gradiente_geotermico.
- Geothermal_gradient sameAs 地温勾配.
- Geothermal_gradient sameAs Geotherm.
- Geothermal_gradient sameAs Gradient_geotermiczny.
- Geothermal_gradient sameAs Gradiente_geotérmico.
- Geothermal_gradient sameAs m.07mq8p.
- Geothermal_gradient sameAs Q636340.
- Geothermal_gradient sameAs Q636340.
- Geothermal_gradient sameAs Geothermal_gradient.
- Geothermal_gradient wasDerivedFrom Geothermal_gradient?oldid=606315266.
- Geothermal_gradient depiction Temperature_schematic_of_inner_Earth.jpg.
- Geothermal_gradient isPrimaryTopicOf Geothermal_gradient.
