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Table 1 List of samples

From: Thermochronology of hydrothermal alteration zones in the Kii Peninsula, southwest Japan: an attempt for detecting the thermal anomalies and implications to the regional exhumation history

Sample code

Lithology

L [m]

Corr. L [m]

Analysis performed

Fluid inclusion

U–Pb

FT

(U-Th)/He

Loc. HJG1 (N33°49′52.64″, E135°43′26.47″)

 HJG1-F

Alteration zone

–

–

Y

Y

Y

–

 HJG1-0–5 cm

Sandstone

–

0.00–0.05

–

Y

Y

–

 HJG1-5–10 cm

Sandstone

–

0.05–0.10

–

Y

Y

–

 HJG1-0 m

Sandstone

0.0

0.0

–

Y

Y

Y

 HJG1-1 m

Sandstone

1.1

0.4

–

Y

Y

Y

 HJG1-3 m

Sandstone

3.1

1.0

–

Y

Y

Y

 HJG1-10 m

Sandstone

9.9

3.3

–

Y

Y

Y

 HJG1-20 m

Sandstone

17.1

5.6

–

Y

Y

Y

Loc. HJG2 (N33°49′56.04″, E135°43′23.75″)

 HJG2-F

Alteration zone

–

–

Y

Y

Y

-

 HJG2-0–5 cm

Sandstone

–

0.00–0.05

–

Y

Y

-

 HJG2-5–10 cm

Sandstone

–

0.05–0.10

–

Y

Y

-

 HJG2-0 m

Sandstone

0.0

0.0

–

Y

Y

Y

 HJG2-1 m

Sandstone

0.7

0.7

–

Y

Y

Y

 HJG2-3 m

Sandstone

2.3

2.3

–

Y

Y

Y

 HJG2-10 m

Sandstone

10.2

10.1

–

Y

Y

Y

Loc. HJG3 (N33°50′02.84″, E135°43′18.79″)

 HJG3-Upb

Qtz porphyry

–

–

–

Y

Y

–

Loc. HJG4 (N33°50′10.26″, E135°43′15.27″)

 HJG4-F

Alteration zone

–

–

Y

–

–

–

 HJG4-0 m

Sandstone

0.0

0.0

–

Y

Y

–

 HJG4-1 m

Sandstone

1.2

1.2

–

Y

Y

–

 HJG4-3 m

Sandstone

4.2

4.2

–

Y

Y

–

 HJG4-10 m

Sandstone

11.7

11.6

–

Y

Y

–

  1. The latitude and longitude of the sample localities were obtained using a handheld GPS and are shown in WGS84. L indicates the horizontal distance from the alteration zones along the outcrop surfaces and Corr. L denotes the horizontal distance from the alteration zones calibrated against the strikes/dips of the alteration zones and the strikes of the outcrop walls (Fig. 5). Note that the uncertainties for L. and Corr. L of HJG#-#m are typically ± 10–15 cm, reflecting the width of the rock samples, whereas those of HJG#-#-#cm are < 1 cm. [Loc., locality; Qtz, quartz; Y, yes (analysis performed on sample)]