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Table 4 Relationship among NCTM (calculated from the CT images at 140kV), ρt, and Zet for each of the samples

From: Quantitative determination of the lowest density domain in major fault zones via medical X-ray computed tomography

Fault name

Location

Material

Sample number

Pixel count

NCTM

SD of NCTM

ρt

ρc = ANCTM+B

ρc

(ρcρt)/ ρt

Zet

Zec = CNCTM+D

Zec

(ZecZet)/Zet

A

B

C

D

MTL

Hiji

Cataclasite

HJ8-1

113570

1333

277

2.03

9.54×10-4

0.76

2.03

0.0%

12.30

2.67×10-4

11.8

12.16

-1.1%

Fault gouge

HJ8-2

122389

1109

192

1.70

1.82

7.1%

12.04

12.10

0.5%

Fault gouge

HJ8-3

73380

994

176

1.89

1.71

-9.5%

12.24

12.07

-1.4%

Fault gouge

HJ8-4

61075

1065

170

1.80

1.78

-1.1%

12.12

12.08

-0.3%

Cataclasite

HJ8-5

39613

1281

312

1.87

1.98

5.9%

12.11

12.14

0.2%

Mizoguchi

Protolith

MZ-5

132804

2056

112

2.77

2.72

-1.8%

12.38

12.35

-0.2%

Awano-Tabiki

Protolith

ATS-2

119482

1961

129

2.66

1.08×10-3

0.56

2.68

0.8%

12.64

1.57×10-3

9.47

12.55

-0.7%

ATS-1

63283

1640

177

2.61

2.33

-10.7%

12.63

12.04

-4.7%

Cataclasite

AT-1

202405

1765

171

2.26

2.47

9.3%

11.34

12.24

7.9%

Fault gouge

AT-2

17591

1209

143

1.79

1.87

4.5%

11.52

11.37

-1.3%

Fault gouge

AT-3

11968

1665

104

2.31

1.19×10-3

0.40

2.38

3.0%

11.36

3.31×10-3

5.87

11.38

0.2%

Cataclasite

AT-4

103475

1864

161

2.61

2.62

0.4%

11.45

12.04

5.2%

Cataclasite

AT-5

52123

1718

123

2.44

2.44

0.0%

11.42

11.56

1.2%

Cataclasite

ATR-2,3

80661

1943

90

2.56

2.71

5.9%

12.17

12.30

1.1%

Mylonite

ATR-4

132075

1820

210

2.65

2.57

-3.0%

12.13

11.89

-2.0%

Protolith

HA-1

134722

1908

209

2.76

2.67

-3.3%

12.72

12.19

-4.2%

Tsuruga

Oritodani

Protolith

K-1

311751

1656

186

2.58

1.23×10-3

0.45

2.49

-3.5%

12.16

2.83×10-4

11.6

12.07

-0.7%

Cataclasite

C-3

234228

1699

164

2.47

2.54

2.8%

12.11

12.08

-0.2%

Cataclasite

C-2

241788

1471

93

2.16

2.26

4.6%

12.10

12.02

-0.7%

Fault gouge

T-3-1

94154

1492

70

2.28

2.29

0.4%

11.96

12.02

0.5%

Fault gouge

T-3-2

64118

1428

121

2.27

2.21

-2.6%

12.08

12.00

-0.7%

Fault gouge

T-3-3

19558

1185

140

2.15

5.47×10-4

1.42

2.07

-3.7%

12.54

7.66×10-4

12.1

13.01

3.7%

Cataclasite

T-3-4

78628

1622

206

2.23

2.31

3.6%

13.55

13.34

-1.5%

Cataclasite

C-1

203854

1981

177

2.43

2.50

2.9%

14.10

13.62

-3.4%

Protolith

T-5

201781

2590

204

2.90

2.84

-2.1%

13.96

14.08

0.9%

Yamada

Mushu

Fault gouge

YDA-3

49921

1108

130

2.05

9.79×10-4

0.85

1.93

-5.9%

11.99

6.95×10-4

11.2

11.97

-0.2%

Cataclasite

YDA-4

165093

1333

119

1.98

2.16

9.1%

12.05

12.13

0.7%

Karakawa

Protolith

YK-1

329517

1730

244

2.61

2.54

-2.7%

12.45

12.40

-0.4%