Living reference work entry
Intercrater plains on Mercury (Fig. 1) form a nearly level or rolling surfaces covering about 40 % of the planet. Intercrater plains resemble smooth plains in color and reflectance and probably have broadly similar composition (Denevi et al. 2009). Preliminary X-ray fluorescence data from MESSENGER show a higher Mg/Si ratio for intercrater plains than for smooth plains and considerably higher than for terrestrial or lunar lavas (Weider et al. 2012). The high Mg/Si and low Fe/Si ratios (Nittler et al. 2011...
KeywordsImpact Crater Plain Material Lunar Maria Late Heavy Bombardment Lunar Highland
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