The OMEGA instrument has detected sulfate deposits at other locations on Mars besides Meridiani Planum, but in general these regions appear to be younger than the areas with clays.

• OMEGA仪器已经在火星上子午线地盘外的地方，侦测到硫酸盐的沉淀，但是这些地区通常比那些含有黏土的地区年轻。