36 Pentti Eskola. (LXIT 
in the mylonitic limestone on the shores of the Tshivirkouy 
Bay, e. g. at the Molodost Bay and on the isle of Kyltyghey. 
Here were found inclusions of ordinary pegmatite as well 
as pyroxene- and amphibole-rocks, and also fragments of a 
scapolite-rock that closely resembles the rock of the »scapo- 
lite-dike» forming the continuation of the pegmatite dike 
near point 7. 
The last-named inclusions of pegmatite or its contact 
products in the mylonitic limestone could be easily under- 
stood as simple fragments of dike masses which have been 
broken up at the same time that the mylonitic structure of 
the limestone originated. It is remarkable, however, that at 
places there are contact walls or reaction rims around the 
ends of such broken up fragments. ; 
Those inclusions occurring in the coarsely crystalline 
limestone cannot be interpreted in the above-named way as 
there is no mechanical deformation bearing evidence of 
movements in late geological times, posterior to the final 
recrystallization of the rock masses. These inclusions are 
no more simple results from the influence of the contact 
action of the neighbouring granite masses, as at the imme- 
diate contacts of the latter towards the limestones there are 
no contact minerals whatever, and it does not therefore 
seem probable that they might have given rise to pneumato- 
lytical products at a distance. It was observed, moreover, 
that the occurrence of the inclusions is not in any way de- 
pendent on the presence of granite masses: they are not at 
all commoner in the vicinity of the granites than else- 
where. 
It remains to explain these fragments to be formed at 
an earlier stage, before the perfect chemical metamorphism 
and the granitization of these formations took place. Crustal 
movements might at that time have caused mechanical de- 
formations and breaking up of rock masses. Movements, of 
course, continued still at the same time as the intrusion of 
granites' and pegmatites had begun. We may therefore 
assume that those pegmatites occurring in the form of frag- 
ments in the limestone have originated at the earlier stages 
få 
