Table 3 Biomarker indicators of origin of organic matter and palaeoenvironment conditions.

From: The study of Dominican amber-bearing sediments from Siete Cañadas and La Cumbre with a discussion on their origin

Sample

CPI(Total)

CPI(17–23)

CPI(25–31)

Pr/Ph

Pr/(Pr + Ph)

Pr/n-C17

Ph/n-C18

TARHC

Paq.

LC1

2.81

0.91

4.95

0.92

0.48

0.95

1.04

6.05

0.15

LC2

2.84

0.94

4.66

1.01

0.50

1.22

1.27

7.04

0.13

SC1

1.26

0.66

3.90

0.53

0.35

0.61

0.56

1.34

0.38

SC2

1.42

0.66

3.62

0.49

0.33

0.52

0.51

2.07

0.31

SC3

2.67

0.95

4.33

0.71

0.42

0.60

0.64

6.43

0.34

SC4

2.35

0.95

3.79

0.51

0.34

0.64

0.64

8.56

0.19

  1. CPI Carbon Preference Index, Pr pristine, Ph phytane, TARHC Terrigenous-Aquatic Ratio, Paq. terrestrial/aquatic plants in aquatic environments, counted as (n-C23 + n-C25)/(n-C23 + n-C25 + n-C29 + n-C31).
Back to article page