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Earth, Planets and Space
Fig. 4. | Earth, Planets and Space

Fig. 4.

From: Thermal metamorphoses of cosmic dust aggregates: Experiments by furnace, electrical gas discharge, and radiative heating

Fig. 4.

SEM images of sectioned melt spherules produced by radiative heating. Left: Spherule produced from fayalite grains by 8 s heating, cooled in free fall. Right: Spherule produced from mantle rock, heated for 25 s, cooled on the ceramic sample holder, which offers a possible explanation for unisotrope texture. Bright areas are pyroxene, darker ones forsterite, the very dark parts are voids.

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