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Table 2 Summary of the M–B boundary in the Chiba composite section

From: A full sequence of the Matuyama–Brunhes geomagnetic reversal in the Chiba composite section, Central Japan

Section/Demag. method

Stratigraphic distance from the Byk-E (m)

Age (ka)1

Reference

Start

End

Mid-point

Start

End

Mid-point

Duration

Yoro-Tabuchi/hybrid

1.07

2.09

1.58

772.96

771.79

772.38

1.17

This study

Yanagawa (and Chiba)/ThD

0.35

1.25

0.80

773.75

772.73

773.24

1.02

Suganuma et al. (2015)

Chiba/hybrid

0.35

1.85

1.10

773.75

772.06

772.91

1.69

Okada et al. (2017)

TB2 sediment core2/ThD

0.68

1.23

0.96

773.37

772.76

773.07

0.61

Hyodo et al. (2016)

Average

0.6

1.6

1.1

773.5

772.3

772.9

1.1

 

SD-1σ

0.3

0.4

0.3

0.4

0.5

0.4

0.4

 
  1. 1Age model of Suganuma et al. (2018) is used to calculate the ages of the M–B boundary and the durations
  2. 2Depth scale of the TB-2 sediment core is converted into thickness scale in the Chiba composite section based on the lithology and tephrostratigraphy