Carboniferous [Adjective] + sandstone [Noun]

Strength Strength Dispersion
A:
10
CHISQ:
5,498.64
AWT:
21,301,364
TTEST:
3.16
G2:
119.38
FAWT:
2.55
MI:
9.11
LOGLOG:
30.26
JD:
0.49
MI3:
15.75
DICE:
2.32
RANGE: