0 .0 mya – virtual particle haze, icing sugar
1.0 mya – high porosity rubble
1.5 mya – tholines, tar, nicotine, fibres
2.0 mya – low porosity rubble, buttons, loose change
3.6 mya – ices (astronomical)
3.9 mya – documentation
5.2 mya – sediment
5.4 mya – unknown, possibly jam
5.5 mya – ices (gastronomical)
5.6 mya – mud
8.6 mya – mud generators (all that is known about the civilisation who built these is they had a highly advanced femtoscale technology and that they really liked mud)
9.2 mya – carpet tiles, dust bunnies
9.3 mya – strange matter / gluon amalgam
9.5 mya – outer core of tightly wound rubber bands
10.1 mya – inner core of synthetic cork