Maps were produced by merging SK's classes for surface boulder diameter and frequency according to the following:
Class |
Surface boulder - diameter (dm) |
Surface boulder - number |
Missing |
|
(0) Missing |
Small and few boulders |
(03) 2.0-3.0
(04) 3.1-4.0
(05) 4.1-5.0
(06) 5.1-6.0 |
(1) 1-5
(2) 6-10
(3) 11-20 |
Big and few boulders |
(07) 6.1-7.0
(08) 7.1-8.0
(09) 8.1-9.0
.
.
.
(98) 97.1-98.0
(99) 98.1- |
(1) 1-5
(2) 6-10
(3) 11-20 |
Small and frequent boulders |
(03) 2.0-3.0
(04) 3.1-4.0
(05) 4.1-5.0
(06) 5.1-6.0 |
(4) 21-30
(5) 31-50
(6) 51-100
(7) 101- |
Big and frequent boulders |
(07) 6.1-7.0
(08) 7.1-8.0
(09) 8.1-9.0
.
.
.
(98) 97.1-98.0
(99) 98.1- |
(4) 21-30
(5) 31-50
(6) 51-100
(7) 101- |
Surface boulders are boulders completely or partly visible, or whose contours clearly appear at the soil surface. A surface boulder must not be covered with mineral soil, whereas it may be completely covered with humus, but not with peat.
