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17/3/2006

Surface boulder frequency

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.


Dominerande ytblockighetsklass Saknas Småblockig-Blockfattigt Storblockig-Blockfattigt
Småblockig-Blockrikt Storblockig-Blockrikt

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-

 

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