I was recently opining on the 'geography' of Mars and decided it should be called 'areography'.
But as 'earthworks' is from ancient German and not ancient Greek (more or less *eordeweorc), we'd have to find out what the ancient Germans called Mars.
Best bet I reckon is to assume as 'mardi' (Mars-day) is renderered 'Tuesday' (Tiw's day) in English, you'd have to call them 'Tue-works'. On Venus of course they'd by 'Fri-works' (and 'geography' would be 'aphroditography').
Some people think it's a disease, but I do this for fun.