Jæderens jordbund.

Abstract

Forkortet:The comparatively flat extent of country which stretches from the neighbour-hood of Stavanger to the neighbourhood of Vigrestad, has above the bed-rocka cover of loose material which in the southern part attains the considerabledepth of up to one hundred metres and more. Northwards this depth diminishesas the bed-rock increases in height, and in fact becomes somewhat hilly, sothat the many places we find outstanding hills devoid of any covering. Suchhills are marked red on the map of Jæren demonstrating the elevation andnature of soil. Soil of a sandy nature is shown light-brown (drift sand isshown yellow), clay dark blue, peat bogs light blue. The comparative elevat-ions of the loose deposits are shown by dotted lines for each 25 metres.Local and smaller elevations and steep declivities are marked by shading. Fromthis representation on the map it will be seen that the surface is somewhatuneven, but comparatively less in the southern part. The nature of the soilvaries very much: different kinds are distributed very irregularly amongst eachother. It is only in the southeastern higher part that we have greaterregularity. There is here a continuous deposit of clay - blue on the map -about 10 km in length immediately above the bed-rock, and it is overlain bymoraine material forming an uneven plateau.