Genetic horizon

Granulometric parameters

Granulometric features description

Symbols

Horizon depth, from - to, cm

Average grain diameter

Mz, φ

Sorting,

σ₁

Skewness

(SK₁)

Profile 1

O/A

0 - 2

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A

2 - 12

2.171

1.427

0.457

Fine-grain sand; poorly sorted;

very positive slant distribution

Es

12 - 25

2.145

1.428

0.458

Fine-grain sand; poorly sorted;

very positive slant distribution

Bs

25 - 76

2.01

1.488

0.416

Fine-grain sand; poorly sorted;

very positive slant distribution

B/C

76 - 140

1.993

0.992

0.291

Medium-grain sand; moderately sorted;

very positive slant distribution

C

140 - 160

1.967

0.866

0.272

Medium-grain sand; moderately sorted; positive slant distribution

Profile 2

O/A

0 - 6

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A

6 - 13

3.347

1.999

0.509

Very fine-grain sand; poorly sorted;

very positive slant distribution

Es

13 - 21

2.944

1.725

0.545

Fine-grain sand; poorly sorted;

very positive slant distribution

Bs

21 - 70

2.315

1.297

0.357

Fine-grain sand; poorly sorted;

very positive slant distribution

B/C

70 - 110

2.113

0.604

0.028

Fine-grain sand; moderately well sorted; symetric distribution

C

110 - 120

1.859

0.621

0.007

Medium-grain sand; moderately well sorted; symetric distribution

Profile 3

O/A

0 - 5

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A

5 - 17

2.753

1.921

0.593

Fine-grain sand; poorly sorted;

very positive slant distribution

Es

17 - 23

1.966

1.345

0.385

Medium-grain sand; poorly sorted;

very positive slant distribution

Bs

23 - 60

1.945

1.432

0.392

Medium-grain sand; poorly sorted;

very positive slant distribution

B/C

60 - 115

1.944

0.788

0.083

Medium-grain sand; moderately sorted; symetric distribution

C

115 - 130

1.668

0.738

0.103

Medium-grain sand; moderately sorted;

very positive slant distribution