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Table 1 Site and formation mean paleomagnetic results from southwest Japan at 110 Ma

From: An improved apparent polar wander path for southwest Japan: post-Cretaceous multiphase rotations with respect to the Asian continent

Site

Formation

Lithology

N (n)

In situ

Tilt corrected

I corrected

k

α95 (°)

Locality

Strike (°)

Dip (°)

IRMZ/IRMX

D (°)

I (°)

D (°)

I (°)

D (°)

I (°)

  

Lat (°N)

Long (°E)

   

High-temperature component

 IN1

Inakura

Red ms

4(6)

94.2

27.9

94.2

27.9

94.2

29.2

70.3

11.0

34.55

133.46

0

0

0.940

 IN2

Inakura

Red ms

6(6)

91.8

31.6

91.8

31.6

91.8

33.7

25.3

13.6

34.55

133.46

0

0

0.907

 IN3

Inakura

Red ms

7(7)

77.0

25.3

77.0

25.3

77.0

26.6

13.6

17.0

34.55

133.46

0

0

0.938

 IN4

Inakura

Red ms

(6)

        

34.55

133.46

97

17

 

 IN5

Inakura

Red ms

6(6)

69.3

51.6

70.0

42.6

70.0

43.0

34.9

11.5

34.55

133.46

344

9

0.977

 IN6a

Inakura

Red ms

6(6)

296.1

72.8

105.0

0.0

105.0

0

23.6

14.1

34.55

133.46

18

107

 

 IN7

Inakura

Gray fine ss

(7)

        

34.55

133.47

89

11

 

 IN8

Inakura

Red ms

6(6)

71.3

37.5

70.1

40.0

70.1

42.9

40.6

10.6

34.55

133.46

192

3

0.859

 IN9

Inakura

Red ms

9(9)

89.0

49.9

88.2

52.8

88.2

57.8

13.3

14.7

34.55

133.46

192

3

0.830

 IN10

Inakura

Red ms

8(8)

88.8

46.2

85.5

36.9

85.5

39.6

58.3

7.3

34.55

133.46

335

10

0.906

 IN11

Inakura

Greenish Red ms

(6)

        

34.55

133.46

292

3

 

 IN12

Inakura

Greenish Red ms

(6)

        

34.55

133.46

0

0

 

 IN13

Inakura

Red ms

5(6)

95.4

30.8

95.4

30.8

95.4

35.3

27.7

14.8

34.55

133.46

0

0

0.840

 IN14

Inakura

Red ms

6(6)

87.2

56.7

95.2

49.9

95.2

54.4

277.8

4.0

34.55

133.46

42

9

0.850

 IN15

Inakura

Red ms

6(6)

77.7

55.7

86.8

49.9

86.8

51.4

433.0

3.2

34.55

133.46

42

9

0.950

 IN16

Inakura

Red ms

4(6)

66.6

42.2

73.4

38.0

73.4

42.3

553.8

3.9

34.55

133.46

42

9

0.858

 In situ mean

  

11

83.0

41.9

    

34.2

7.9

34.55

133.46

   

 Tilt-corrected mean

     

84.3

39.1

  

44.4

6.9

     

 Inclination-corrected mean

       

84.2

41.9

42.0

7.1

     

Uno and Furukawa (2005)

 SG1b

Ohyamashimo

Red ms

6(6)

39.7

44.8

58.1

48.1

  

24.9

15.6

     

 SG2b

Ohyamashimo

Red ss

5(5)

140.8

82.2

51.4

68.3

  

366.8

4.0

     

 SG3b

Ohyamashimo

Red ms

6(6)

45.8

42.6

63.1

48.2

  

49.0

9.7

     

 SG8b

Ohyamashimo

Red ms

6(6)

64.8

53.9

91.2

60.6

  

95.3

6.9

     

 SG12b

Ohyamashimo

Red ms

7(7)

51.8

40.1

71.7

57.1

  

119.9

5.5

     

 SG13b

Ohyamashimo

Red ms

3(6)

52.8

40.3

74.0

56.0

  

88.3

13.2

     

 In situ overall mean

  

17

73.8

46.1

    

18.0

8.6

34.55

133.46

   

 Tilt-corrected overall mean

     

79.8

45.6

  

28.6

6.8

     

 Inclination-corrected overall mean

       

79.7

47.4

31.0

6.5

     

Medium temperature component

 In situ mean

  

12

58.2

50.6

    

81.7

4.8

34.55

133.46

   

 Tilt-corrected mean

     

59.9

49.4

  

63.3

5.5

     

 9% unfolded mean

       

58.3

50.5

82.0

4.8

     
  1. ms: mudstone; ss, sandstone; N(n): number of samples used in calculation of the means (number of samples demagnetized); D and I: declination and inclination, respectively; k: the precision parameter; α95: radius of the cone of 95% confidence; Lat: north latitude; Long: east longitude
  2. aNot involved in the calculation of the mean direction
  3. bRecalculated at the reference point of this study (34.55° N, 133.46° E)