GLACIAL SUCCESSION IN CENTRAL LUNENBURG—PREST. 165 
its tributaries, and the consequent draining of the watershed at 
Rhodenizer’s Lake, would have prevented the formation of the 
kame. If, as is maintained, this was near the southern limit of 
glacial extension, then the deep valleys to the east and west of 
this tableland would influence the course and lessen the eroding 
power ot the thinned-out extremity of the last glacier. The 
complete removal of a kame on a watershed would then be 
extremely doubtful. Again, the formation of interglacial kames 
was but the natural result of influences then in operation. The 
retention of interglacial, as well as pre-glacial deposits, while 
being over-ridden by glaciers, was also but a common occur- 
rence.* River terraces must ulso have been formed from the 
debris resulting from the re-excavation of the Lahave in this 
epoch. But whether their remains are represented by the 
deposits on the river east and south of Bridgewater, I had no 
time to attempt to decide. 
Second Glacial Epoch. 
To this period probably belongs the lower till of Blockhouse 
and Dorey’s Brook, and the morraines surrounding them. It is 
seen filling the re-excavated valley of the Lahave at tide level, 
without having been there modified to any noteworthy extent. 
At Blockhouse it underlies the auriferous drift, and at Dorey’s 
Brook it is seeu beneath the interglacial clays and upper or 
auriferous beds, which last are of local origin. This lower till 
contains trap, granite, diorite, slate and quartzite. These rocks 
are sometimes much worn, but are generally semi-angular and 
easily distinguished from the rounded and polished pebbles 
included among them, and which were evidently eroded from 
some ‘earlier deposit. It is but slightly oxidized where it is 
covered by the upper auriferous drift, showing that no very 
long time elapsed between the deposition of those two deposits. 
The course tra velled by the drift, from the lode at Blockhouse 
was about 8. 22° E. This may be a local deflection, as the 
* Chalmer’s Report on the Surface Geology of Eastern New Brunswick, 1895, page 
47 ; M. also, Acadian Geology, 2nd ed., page 68. 
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