Carboniferous [Adjective] + rock [Noun]

Strength Strength Dispersion
A:
17
CHISQ:
802.38
AWT:
15,547,642
TTEST:
4.04
G2:
107.59
FAWT:
3.5
MI:
5.62
LOGLOG:
22.97
JD:
0.44
MI3:
13.79
DICE:
0.36
RANGE: