PT  - JOURNAL ARTICLE
AU  - Madsen, Herr Victor
TI  - Scandinavian Boulders at Cromer
AID  - 10.1144/GSL.JGS.1893.049.01-04.27
DP  - 1893 Feb 01
TA  - Quarterly Journal of the Geological Society
PG  - 114--116
VI  - 49
IP  - 1-4
4099  - http://jgs.lyellcollection.org/content/49/1-4/114.short
4100  - http://jgs.lyellcollection.org/content/49/1-4/114.full
SO  - Quarterly Journal of the Geological Society1893 Feb 01; 49
AB  - During a visit to England in the autumn of 1891, I took the opportunity of making a short excursion to Cromer in order to study the interesting geological facts presented in the well-known cliffs near that village.On my walks along these cliffs my attention was especially devoted to the boulders which occur there, for I thought it possible to find some which might with certainty be referred to definite localities in Scandinavia. The greater number of the boulders there originate indeed, as I expected, from disturbed portions of the Cretaceous strata which underlie the Drift in the vicinity of Cromer, so that it is only a few of the boulders which are likely to be of Scandinavian origin, and of these again only a small number can be definitely referred to their parent localities.Among the boulders on the shore a little west of Cromer I succeeded in finding a ‘porphyry’-boulder which I supposed had been derived from the south-eastern part of Norway, and this supposition was subsequently confirmed by Herr K. O. Björlykke, of the Norwegian Geological Survey, to whom I showed the boulder and who referred it to the neighbourhood of Christiania.This boulder measures about inches. The ground-mass is rather decomposed and of a grey-violet colour; in it are disseminated crystals of felspar which, on fresh fracture, show the same colour as the groundmass, while those on the surface of the boulder have become somewhat paler by decomposition. The sections of