Table 1 FA (sample S6) and IT (sample S8) from 2D tomography, high-resolution microscopy, and caliper measurements.

From: Determining rock discontinuity fracture aperture and infilling characteristics using 3D X ray tomography with automated approach and multi method validation

Sample

Area

2D tomography (mm)

Microscope (mm)

Caliper (mm)

Mean

Std Dev

Max

Min

Mean

Std Dev

Max

Min

Mean

S6

Bottom region

1.30

0.17

1.45

0.90

Central region

1.28

0.16

1.43

0.88

Top region

1.45

0.21

1.69

1.05

Entire sample

1.34

0.19

1.69

0.88

1.30

0.18

1.49

0.78

1.1

S8

Bottom region

0.80

0.12

1.05

0.58

Central region

1.15

0.14

1.40

0.75

Top region

1.10

0.13

1.33

0.73

Entire sample

1.02

0.18

1.40

0.58

1.17

0.15

1.42

0.75

1.0