Figure 1 | Scientific Reports

Figure 1

From: Estimating the capacity for production of formamide by radioactive minerals on the prebiotic Earth

Figure 1

Factors causing heterogeneous distribution of energy from radioactive placer minerals. (a) Global distribution of major modern heavy mineral placer deposits. (b) Concentration of heavy mineral grains (dark layers) within a typical beach placer deposit; image courtesy C. Bern, United States Geological Survey. (c) Spatial distribution of α, β and γ particles around a single radioactive mineral grain.

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