Nye studier af den inderste planet Merkurs overflade-sammensætning, viser at den er meget anderledes end de andre planeter. Faktisk har den mere tilfælles med en sjælden meteorit-type, som blev dannet i det indre solsystem. Der er mere magnesium og svovl, og desuden har den højere Mg/S, S/Si, Ca/Si og Si/Al forhold end de øvrige planeter.
Kilde: Geophysical Research Letters
in magnesium and enriched in sulfur. This composition is similar to that expected from partial melts of enstatite chondrites, a rare type of meteorite that formed at high temperatures in highly reducing (low oxygen) conditions in the inner solar system. In addition, the researchers find that the composition of Mercury's northern plains deposits differs from that of the surrounding older terrain. In particular, the older terrain has higher ratios of magnesium to silicon, sulfur to silicon, and calcium to silicon, but lower ratios of aluminum to silicon.
Read more at: http://phys.org/news/2012-09-characterizing-surface-composition-mercury.html#jCp
Read more at: http://phys.org/news/2012-09-characterizing-surface-composition-mercury.html#jCp
in magnesium and enriched in sulfur. This composition is similar to that expected from partial melts of enstatite chondrites, a rare type of meteorite that formed at high temperatures in highly reducing (low oxygen) conditions in the inner solar system. In addition, the researchers find that the composition of Mercury's northern plains deposits differs from that of the surrounding older terrain. In particular, the older terrain has higher ratios of magnesium to silicon, sulfur to silicon, and calcium to silicon, but lower ratios of aluminum to silicon.
Read more at: http://phys.org/news/2012-09-characterizing-surface-composition-mercury.html#jCp
Read more at: http://phys.org/news/2012-09-characterizing-surface-composition-mercury.html#jCp