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Table 1 Summary of sample parameters

From: First report of (U–Th)/He thermochronometric data across Northeast Japan Arc: implications for the long-term inelastic deformation

Sample Region Rock type E-lon.
(deg.)
N-lat.
(deg.)
Elv.
(m asl)
Weighted mean He age ± 95% CI
(Ma)
AHe T c
(°C)
Apatite Zircon
A02-ST01 AbM CrGr 140.49643 37.71979 96 49.6 ± 3.0   51.9
A02-ST02 AbM CrGr 140.67009 37.75609 300 64.3 ± 9.5   51.4
A02-ST03 AbM CrGr 140.81441 37.78157 172 63 ± 15   50.6
A02-ST04 OBR CrGr 140.37499 37.79742 282 11.2 ± 1.4 39.6 ± 7.4 62.0
A02-ST05 OBR CrGr 140.11011 37.80026 620 1.5 ± 0.1 N/A 76.1
A02-ST06 OBR CrGr 140.34019 37.96475 404 2.5 ± 1.7 N/A 72.1
A02-ST07 AsM CrGr 139.92652 38.12244 434 10.3 ± 0.6 27.2 ± 3.3 63.8
A02-ST08 OBR CrGr 140.07998 38.10221 236 6.8 ± 0.9 N/A 64.4
A02-ST09 AsM CrGr 139.84943 38.21464 456 11.1 ± 2.3 11.0 ± 2.4 58.7
A02-ST12 AsM CrGr 139.74319 38.24726 245 11.4 ± 0.8   64.4
A02-ST13 AsM CrGr 139.62478 38.33835 97 5.2 ± 0.9 N/A 68.5
A02-ST15 AsM CrGr 139.46802 38.36962 44 9.7 ± 0.7 30.7 ± 4.8 63.8
  1. He ages are shown as weighted mean (see also Tables 2, 3). N/A denotes that weighted mean ages were not adopted. AHe T c is the closure temperature of the AHe system considering the cooling rate of each sample; detailed calculations are shown in the body text
  2. AbM Abukuma Mountains, OBR Ou Backbone Range, AsM Asahi Mountains, CrGr Cretaceous granitoid