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NUCLEAR REACTIONS – IN NATURE. RADIOACTIVE DECAY HEAT - EARTH’S CORE. HOT SPOT VOLCANO OR LARGE IGNEOUS PROVINCE. BIOSPHERE. CONTINENTAL SUBDUCTION ZONE. LITHOSPHERE. UPPER MANTLE. MID-OCEANIC RIFT ZONE. LOWER MANTLE. D”. CORE-MANTLE BOUNDARY. OUTER CORE. MANTLE PLUME. INNER CORE.
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NUCLEAR REACTIONS – IN NATURE RADIOACTIVE DECAY HEAT- EARTH’S CORE HOT SPOT VOLCANO OR LARGE IGNEOUS PROVINCE BIOSPHERE CONTINENTAL SUBDUCTION ZONE LITHOSPHERE UPPER MANTLE MID-OCEANIC RIFT ZONE LOWER MANTLE D” CORE-MANTLE BOUNDARY OUTER CORE MANTLE PLUME INNER CORE 0 2000 4000 6000 TEMPERATURE ( KELVINS ) 0 700 2900 5100 6371 DEPTH ( KILOMETERS ) CENTER OF THE EARTH - FISSION REACTOR ?