Earth Igneous achondrite which was used, and earth sedimentary rock are one and the same (same category). 80% of earths upper crust consist of a wide range in different sedimentary rocks. (8% of total mass of upper and lower crust)
It is widely acepted that mercury, venus and Mars has had wet periods like earth is now.
What about the earth-origin sedimentary meteorites, shouldent they exist?
Edited by whitegandalf, 26 May 2013 - 01:54 AM.