Nørre Nissum - Fabjerg

18. Nørre Nissum - Fabjerg

Photo: Geopark Vestjylland

Undulating moraine landscape with dead ice features between the MSL and a terminal moraine formed during a glacial re-advance.

This locality covers an area of a little more than 3 x 3 km about 1 km east of Lemvig (Figure 18-1). The area lies between the MSL at Fabjergkirkevej road (site 3) and a terminal moraine formed by glacial re-advance (site 7 Nørlem - Nørre Nissum). The MSL, which marks the limit of glacial advance during the Main Weichselian Advance 23.000-21.000 years ago, can be followed through the entire geopark. A feature of the area is that there is commonly a marked ridge a couple of kilometers north of the MSL.

This is a terminal moraine that was formed by glacial re-advance after development of the MSL (sites 11 Ryde - Sevel and 17 Lomborg - Bonnet - Heldum). Such a moraine ridge behind the MSL is located at Fabjergkirkevej road, which to the north abuts the spectacular terminal moraine at Nørlem - Nørre Nissum (site 7).  There is a moraine landscape with clear dead ice features at several places in the geopark in the area between the two terminal moraines. This is the case here at site 18 and, for example, at site 17 Lomborg – Bonnet - Heldum.

The landscape at Nørre Nissum - Fabjerg is undulating with many small depressions, with no evidence of natural drainage, and isolated small hills (Figure 18-2). In the southern part of the area the relief is low and the difference between the floors of the depressions and the tops of the hills is typically less than 5 m. Closer to the terminal moraine in the north the topography is more marked with higher, bigger hills and deeper, larger depressions. This topography is superimposed on the slope of the terrain up towards the top of the terminal moraine.

Throughout the area the hills and depressions are elongate in a direction normal to the terminal moraine i.e. roughly north-south. The depressions are commonly filled with water, and many of them have floors composed of peat. These kames and kettle holes are typical of an area influenced by the melting of dead ice that was left in the landscape when the MSL glaciers were retreating, as at site 17 Lomborg - Bonnet - Heldum. The elongate shapes of the kames and kettle holes may reflect the direction of flow of meltwater while the dead ice was melting. The topographic variations from north to south may reflect variations in the amount of dead ice and volume of meltwater deposits. Plant growth, including the development of bogs, took place in the depressions when the climate got warmer.

The many bogs and small lakes are protected by Nature Conservancy Law § 3 (protected types of nature). The buildings in the area are dominantly small farms.