Table 1 Analytical results of C, TOC, H, N, S concentrations, and C, N, Fe stable isotopes.

From: Microbial nitrification and acidification of lacustrine sediments deduced from the nature of a sedimentary kaolin deposit in central Japan

No

A04

A05

A06

A07

A08

A09

A10

I01

AM01

AM02

AM03

 

Type

grm

grm

kbs

grm

kbs

kbs

kbs

kbs

s-grm

s-grm

s-grm

 

(Dry %)

 

C

0.1

2.4

1.6

0.4

3.9

3.8

3.4

6.2

0.05

0.06

0.1

 

TOC

0.1

2.3

1.5

0.4

3.7

3.4

3.3

6.0

< 0.1

< 0.1

0.1

 

H

1.40

1.24

0.97

0.92

1.53

1.49

1.19

1.51

0.91

0.64

0.66

 

N

0.04

0.07

0.06

0.05

0.11

0.11

0.08

0.13

0.04

0.03

0.05

 

S

0.011

0.047

0.026

0.010

0.041

0.044

0.047

0.079

0.002

0.003

0.004

 

C/N

2.9

40.0

31.1

9.3

41.4

40.3

49.6

55.6

1.5

2.3

2.3

 

(‰)

 

δ13C

− 26.4

− 27.9

− 27.5

− 26.5

− 27.5

− 27.3

− 27.4

− 28.4

− 25.8

− 26.3

− 25.2

 

Error (±)

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

 

δ15N

4.5

4.2

5.5

4.7

4.7

4.4

4.4

3.9

5.0

1.9

4.6

 

Error ( ±)

0.5

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.3

0.3

0.3

 

δ56Fe

0.112

0.231

0.288

0.143

0.192

–

–

–

–

–

–

 

SD

0.076

0.080

0.052

0.018

0.060

–

–

–

–

–

–

 

No

M07

ON01

ON02

ON03

ON04

ON05

ON06

ON07

GR01

GR02

GR03

GR04

Type

gsp

lmc

lmc

lmc

lmc

lmc

lmc

lmc

bgr

bgr

bgr

bgr

(‰)

δ56Fe

0.259

0.184

− 0.372

0.905

− 0.325

− 0.530

0.352

− 0.102

0.261

− 0.074

0.082

0.256

SD

0.014

0.027

0.028

0.015

0.067

0.018

0.058

0.061

0.058

0.035

0.014

0.036

  1. TOC total organic carbon, grm gaerome, kbs kibushi, s-grm silicic gaerome, gsp green saprolite, lmc limonite crust, bgr basement granite, SD standard deviation.
  2. –: not analyzed, C/N: molar ratio of carbon and nitrogen.
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