Exposed

Lithology

Geologic Age

Calculated

Indicators

Min

Max

X

𝛿

𝑋 + 3𝛿

Lafia-Wukari FM

Maastrichtian

DRAD (%)

1.10

18.7

3.00

2.00

9.00

-6.80

95.7

4.70

10.3

35.6

-32.9

16.5

2.10

4.50

15.6

-14.4

27.0

2.40

4.80

16.8

-12.7

8.10

1.70

2.10

3.57

eUD (%)

-0.10

0.20

0.10

0.10

0.40

-0.40

0.30

0.10

0.10

0.40

-0.30

0.30

0.10

0.10

0.40

-1.40

0.20

0.00

0.20

0.60

-0.50

0.30

0.10

0.10

0.40

KD (%)

-18.5

-1.00

-2.90

2.00

3.10

-99.3

7.80

-4.60

10.5

26.9

-16.3

34.1

-2.00

4.60

11.8

-27.0

15.0

-2.40

4.80

12.0

-8.80

13.0

-1.60

2.10

4.70

Nkporo FM

Campanian

DRAD (%)

-30.0

93.9

7.70

20.8

70.1

-130

55.1

0.20

16.5

49.7

-15.0

65.9

4.20

8.80

30.6

-633

50.9

-19.7

8.94

7.12

1.10

4.90

2.60

1.00

5.60

eUD (%)

-2.20

0.20

-0.20

0.50

1.30

-0.40

0.30

0.00

0.20

0.60

-0.50

0.20

-0.00

0.20

0.60

-0.20

0.20

0.10

0.10

0.40

-0.00

0.30

0.10

0.10

0.40

KD (%)

-97.0

30.2

-7.80

20.7

54.3

-55.9

133.7

-0.20

16.5

49.3

-72.4

14.9

-4.20

9.20

23.4

-53.6

619.6

19.5

88.6

285.3

-4.70

-1.10

-2.50

0.90

0.20

Agwu FM

Coniacian-Turonian

DRAD (%)

0.30

23.4

1.50

1.40

5.70

0.30

3.80

1.60

0.70

3.70

0.50

2.60

1.50

0.50

3.00

-0.60

16.3

0.80

1.70

5.90

0.10

4.70

1.10

0.70

3.20

eUD (%)

-0.40

2.40

0.10

0.20

0.70

-0.30

0.20

0.10

0.10

0.40

-0.20

0.30

0.10

0.10

0.40

-0.40

0.20

-0.00

0.10

0.30

-0.30

0.20

-0.00

0.10

0.30

KD (%)

-21.0

-0.30

-1.40

1.20

2.20

-3.80

-0.20

-1.50

0.70

0.60

-2.70

-0.40

-1.40

0.50

0.10

-16.5

0.40

-0.80

1.70

4.30

-5.20

0.00

-1.10

0.80

1.30

Eze-Aku G. (Esh)

Cenomanian

DRAD (%)

-0.80

0.70

-0.10

0.30

0.80

-0.90

0.40

-0.30

0.30

0.60

-0.70

1.50

-0.10

0.50

1.40

-0.90

0.50

-0.40

0.40

0.80

-0.60

8.30

1.00

1.70

6.10

eUD (%)

-0.60

0.30

-0.00

0.20

0.60

-0.50

0.20

-0.10

0.10

0.20

-0.20

0.20

-0.00

0.10

0.30

-0.40

0.00

-0.10

0.10

0.20

-0.30

0.10

-0.10

0.10

0.20

KD (%)

-0.70

0.60

0.10

0.30

1.00

-0.40

0.70

0.20

0.30

1.10

-1.50

0.70

0.00

0.50

1.50

-0.80

0.70

0.20

0.50

1.70

-8.40

0.40

-1.10

1.70

4.00

Eze-Aku G. (Ess)

Cenomanian

DRAD (%)

-0.30

3.80

1.40

0.70

3.50

-0.60

6.00

1.50

1.10

4.80

-108

3.90

-3.20

13.8

38.2

-0.70

5.00

0.70

1.20

4.30

-6.50

2.20

-0.50

0.90

2.20

eUD (%)

-0.40

0.20

-0.10

0.10

0.20

-0.40

0.30

-0.00

0.10

0.30

-108

-0.20

-3.30

13.7

37.8

-0.20

0.40

0.10

0.20

0.70

-5.90

0.10

-0.20

0.60

1.60

KD (%)

-3.80

0.20

-1.50

0.70

0.60

-6.20

0.30

-1.50

1.20

2.10

-4.40

0.50

-0.10

0.80

2.30

-5.10

0.70

-0.60

1.20

3.00

-2.30

0.60

0.20

0.60

1.60

Bima Formation

Albian-Turonian

DRAD (%)

1.70

44.5

5.40

8.00

29.4

-4.80

5.90

2.60

1.40

6.80

1.30

4.20

2.50

0.60

4.30

1.10

4.00

2.20

0.70

4.30

1.20

4.50

2.50

0.70

4.60

eUD (%)

-0.00

0.20

0.10

0.10

0.40

-0.20

0.00

-0.10

0.10

0.20

-0.20

0.20

0.00

0.10

0.30

-0.20

0.20

-0.00

0.10

0.30

-0.30

0.20

-0.10

0.10

0.20

KD (%)

-45.5

-1.60

-5.40

8.30

19.5

-6.00

5.00

-2.70

1.50

1.80

-4.10

-1.30

-2.50

0.60

-0.70

-3.90

-1.20

-2.20

0.70

-0.10

-4.30

-1.30

-2.60

0.60

-0.80

Asu-River Group

Albian-Turonian

DRAD (%)

0.30

4.70

2.10

1.20

5.70

0.40

3.20

1.40

0.80

3.80

-0.40

1.10

0.20

0.40

1.40

-0.90

0.40

-0.40

0.40

0.80

-0.00

2.10

1.00

0.50

2.50

eUD (%)

-0.30

0.10

-0.10

0.10

0.20

-0.20

0.20

0.00

0.10

0.30

-0.40

0.10

-0.10

0.10

0.20

-0.10

0.20

0.10

0.10

0.40

-0.20

0.10

-0.10

0.10

0.20

KD (%)

-4.90

-0.20

-2.20

1.20

1.40

-3.30

-0.40

-1.40

0.80

1.00

-1.40

0.50

-0.30

0.50

1.20

-0.20

0.80

0.50

0.30

0.40

-2.30

-0.10

-1.10

0.60

0.70