Moose River Basin: geology and mineral potential - Geology Ontario

Moose River Basin
Drillhole
Location
Elevation
(metres)
Total Depth
(metres)
75-01
85040'51"W
50 0 21'43"N
92.23
45.73
75-02
82045'46"W
500 35'27"N
149.74
130.18
75-03
82 048'08"W
50041'35"N
163.75
134.45
75-04
820 43'03"W
500 28'00"N
119.64
165.40
75-05
820 18'38"W
500 10'05"N
100.96
87.80
75-06
82 0 23'13"W
50 0 16'58"N
93.66
174.85
The fall 1977 drilling, involving three holes and total drilling length of 147
m (Table 2.2), produced 29 split spoon samples and about 50 m of core (Appen
dix A in Verma et al. 1978). Only one of the holes penetrated definite Creta
ceous sediments but extensive palynological analyses were carried out on sam
ples from all three holes to test the lithostratigraphic correlations.
The geophysical surveys of winter 1975 (Utard 1975) and 1976 (Scintrex
Surveys Limited 1976) have had only limited value in interpretation of the Me
sozoic stratigraphy. Perhaps of most use was the seismic profile obtained con
currently with the winter 1975 drilling which indicated the approximate topog
raphy of the Precambrian basement and overlying Paleozoic strata.
In addition to this recently acquired data, a large body of geological inform
ation has been generated by fossil fuel and industrial mineral exploration ac
tivity in the Moose River Basin over the past 50 years. More than 400 boreholes
have been drilled near Onakawana since the late 1920s, providing most de
tailed information on the character and distribution of Cretaceous sediments in
that area. Critical information on deeper horizons has been provided by petro
leum exploration holes such as the Aquitaine Sogepet Hambly No. l well
drilled in Hambly Township (Latitude 50015'16"N, Longitude 82035'48"W) in
1973. The bulk of this pre-1975 data was summarized and used in the reports of
Martison (1953) and Price (1978), and the history of pre-1975 geological activi
ties in the Moose River Basin has been reviewed.
26