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Earth, Planets and Space

Table 1 Rock magnetic and physical properties. Bulk grain density, natural remanent magnetization (NRM), magnetic susceptibility (K), and Koenigsberger ratio (Q) of 15 lava samples obtained in the dives 6K#918 and 6K#1331 were demonstrated

From: Near-seafloor magnetic mapping of off-axis lava flows near the Kairei and Yokoniwa hydrothermal vent fields in the Central Indian Ridge

Sample

n

Grain density (kg/m3)

NRM (A/m)

σNRM (A/m)

K (SI)

σK (SI)

Q

Latitude (°)

Longitude (°)

Depth

6K#918R01

4

2.98

8.2

0.5

0.0223

0.0011

10

− 25.3363

70.0180

2897

6K#918R02

4

2.98

6.4

0.4

0.0016

0.0001

115

− 25.3324

70.0207

2836

6K#918R03

4

2.96

18.4

1.6

0.0025

0.0002

209

− 25.3275

70.0293

2704

6K#918R06

4

2.99

11.5

0.9

0.0025

0.0004

129

− 25.3204

70.0400

2428

6K#918R07

4

2.99

2.9

0.3

0.0103

0.0022

8

− 25.3208

70.0415

2435

6K#918R08

4

3.09

4.2

0.1

0.0124

0.0003

9

− 25.3217

70.0428

2423

6K#918R09

4

3.09

5.6

0.4

0.0111

0.0002

14

− 25.3176

70.0500

2445

6K#918R10

4

3.01

8.2

1.4

0.0019

0.0004

122

− 25.3176

70.0500

2445

6K#918R11

4

3.03

11.2

3.8

0.0058

0.0026

54

− 25.3176

70.0500

2445

6K#1331R01

4

2.94

1.2

1.0

0.0007

0.0002

46

− 25.2600

70.0579

2622

6K#1331R02

4

2.96

0.9

0.4

0.0007

0.0001

34

− 25.2600

70.0579

2622

6K#1331R03

6

2.97

1.7

1.4

0.0008

0.0002

59

− 25.2610

70.0623

2556

6K#1331R04

5

2.96

1.3

0.7

0.0007

0.0001

51

− 25.2610

70.0623

2556

6K#1331R06

8

2.95

1.9

1.4

0.0008

0.0002

64

− 25.2632

70.0650

2560

6K#1331R07

4

2.97

1.8

1.8

0.0007

0.0001

74

− 25.2632

70.0650

2560

  1. The original data of the dive 6K#1331 sample was cited from Fujii et al. (2016a)
  2. n Number of measured 2-cm cubic specimens, NRM natural remanent magnetization, K magnetic susceptibility. Q Koenigsberger ratio (ratio of NRM to induced magnetization)
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