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Table 3 Tephra-analysis samples

From: Washover deposits related to tsunami and storm surge along the north coast of the Shimokita Peninsula in northern Japan

GS no.

Depth (cm)

Volcanic glass content (%)

Visible (V) or invisible (I)

Correlative tephra

GS9

86.5–89

86.0

V

B-Tm

GS8

108–111

88.8

V

B-Tm

GS8

115–117

90.0

V

B-Tm

GS1

87–89

90.0

V

B-Tm

GS7

67–68

88.2

V

B-Tm

GS7

70–72

85.0

I

B-Tm

GS6

83–85

76.4

V

B-Tm

GS5

8–10

4.4

–

 

GS5

13–15

4.9

–

 

GS5

18–19

10.5

–

 

GS5

36–37

41.9

I

B-Tm

GS5

163–165

17.1

–

 

GS5

165–167

24.5

–

 

GS5

167–170

22.1

–

 

GS5

170–172

27.3

I

To-Cu

GS5

172–174

23.1

–

 

GS5

174–177

13.3

–

 

GS5

177–180

11.1

–

 

GS5

184–186

7.7

–

 

GS4

40–43

54.5

I

B-Tm

GS4

50–53

28.2

–

 

GS4

58–61

16.5

–

 

GS3

72–73

82.4

V

B-Tm

GS2

68–71

90.0

V

B-Tm