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Table 2 Results by lithology including TC, TOC and total HC concentration in ppm (parts per million) and organic carbon isotopic composition of bulk rock δ13Corganic

From: Preserved organic matter in a fossil Ocean Continent Transition in the Alps: the example of Totalp, SE Switzerland

 

Sample number

Total carbon (ppm)

Total corganic (ppm)

Hydrocarbons (HC) (ppm)

n-alkanes

δ 13CVPDB (‰) on TOC

Steranes

Hopanes

PAHs*

Range

Cmax

CPI

Mean carbon number

Serpentinite

 Massive serpentinite

5, 16

395–3135

102–176

23–900

16–39

C20, C29

0.76–1.29

20–28

 

BDL

BDL

*

 Serpentinite with numerous Ca veins

24, 26, 44, 47

20400–42500

19–135

1–124

16–35

C20, C26

0.8–1.05

22–28

 

BDL

*

*

 Red serpentinite (with hematite)

71

88205

268

1

17–35

C26

1.17

22.3

 

BDL

BDL

**

 Serpentinite gouge

69

539

284

3

17–33

C29

0.94

26.0

 

BDL

*

BDL

 Serpentinite cataclasite

70

876

269

46

17–36

C20

0.94

24.1

 

BDL

BDL

**

 Massive serpentinitea

77, 78

454

≈190

0.05–4

17–40

C29

0.84–0.97

29–30

 

BDL

*

BDL

Ophicalcite

 Neptunian dykes

1, 23

95600–107500

15–103

0.03–121

17–35

C29

1.05

27–29

−27.06

**

**

**

Tectono-sedimentary ophicalcite

 Red matrix, serp. claste and Ca veins

21, 25, 39, 41, 42, 46, 66

33360–101700

11–116

2–2470

17–38

C18 to C28

0.81–1.42

23–31

−27.4

**

**

**

 Reworked tec-sed. ophicalcite

9

106000

86

50

16–36

C22

0.65

24

−26.1

BDL

*

**

 Serp.clasts in Ca veins

72

69600

30

124

20–36

C29

0.90

28

 

BDL

BDL

BDL

Sediments

 Radiolarite from sulphide rich outcrop

62, 68

671–13200

66–187

1–17

17–34

C20 C31

1.19–2.87

24–28

 

BDL

**

*

 Siliceous shale from sulphide rich outcrop

60, 61

384–672

194–433

22–144

16–37

C20 C27

1.05–1.52

23–25

 

**

**

**

 Siliceous shale near sulphide rich outcrop

15, 18

285–318

136–145

13–27

16–33

C18,C20

0.95–1.19

23–24

 

*

*

BDL

 Limestones

10,19

98200–129000

74–82

79–171

16–35

C22, C27

0.92–0.94

23–27

−26.62

BDL

***

***

Limestone from parsennhütte

53, 54, 56, 57, 58

46500–94500

14–92

3–238

16–37

C23, C29

0.82–1.10

22–23

 

*

*

**

 Sulphide rich outcrop

63, 64, 65

442–90400

153–647

1–24

17–33

C20, C27

0.93–1.55

23–26

−26.02

**

**

**

  1. For the n-alkanes: the carbon number range (n-alkane range), the maximum carbon number (Cmax), carbon preference index (CPI values) and mean carbon number (MC#) are shown. For the steranes, hopanes and PAHs the concentrations are in ppm and are represented in intervals by star symbol *, where * = [0–0.1), ** = [0.1–1) and *** = [1–10)
  2. BDL below detection limit, a identified PAHs in the samples were: Phenanthrene, P Fluoranthene, Fluo Pyrene, Pyr Chrysene, Chry Benzo(a)anthracene, BaA Benzo(b)fluoranthene, BbF Benzo(a)pyrene, BaP Indeno(1,2,3-cd)pyrene, IndPy Benzo(ghi)perylene, BghiP Dibenzothiophene (DBT), methylP (3,2,1 and 9 MPs) and 2-methyl naphthalene; not all were present in every sample
  3. aAll lithology are from lower sub-unit except the massive serpentinite (samples 77, 78) which is from upper sub-unit