Carboniferous [Adjective] + limestone [Noun]

Strength Strength Dispersion
A:
33
CHISQ:
30,986.95
AWT:
14,424,978
TTEST:
5.74
G2:
403.4
FAWT:
3.77
MI:
9.88
LOGLOG:
49.83
JD:
0.58
MI3:
19.97
DICE:
5.22
RANGE: