stratigraphical [Adjective] + boundary [Noun]

Strength Strength Dispersion
A:
5
CHISQ:
241.8
AWT:
29,963,465
TTEST:
2.19
G2:
37.51
FAWT:
1.81
MI:
5.65
LOGLOG:
13.12
JD:
0.17
MI3:
10.3
DICE:
0.22
RANGE: