Section through the Western mountain ranges of Nelson. 
102 
Upon the 
from quartz veins, 
> n 8 
;ol d-fields the gold lias been originally derived 
1 occur in non-fossiliferous crystalline (or 
metamorphic) schists. A section from 
East to West through the mountain 
ranges between Blind Bay and the 
West coast of the Province Nelson, 
presents to us the succession of the 
crystalline schists. The western sho- 
res of Blind Bay from Separation Point 
to the mouth of the Motueka River 
consist of granite, which towards West 
is flanked by gneiss. This granite 
and gneiss-zone can be traced towards 
the South along the Motueka valley 
to the junction of the Wangapeka 
river. It is intersected farther South 
by the Bullcr river at its entrance into 
the gorge of “Devil’s Grip”, and con- 
tinues on the eastern escarpement of 
the range as far as Lake Rotorua 
(L. Howik), 
Proceeding from the granite and 
gneiss towards the West, we find upon 
the top of the Rikikerunga range a 
broad zone of hornblende schist, which 
al ten i ates frequently and regal arly 
with quartzite and crystalline lime- 
stone in Vortical strata, with a strike 
almost due North and South. These 
ranges continue to the Westward as 
far as beyond the Takaka valley, 
where they are intersected , on Stony 
Creek and on the Waikaro, by dioritic 
porphyry and serpentine. A characteristic feature of the limestone of 
this zone is numerous funnel-shaped pits and caves, reminding us of 
