Abitibi-Grenville Transect, Phase I (1990)

All data were acquired with CAS (correlation after diversity stacking) and were written to 6250 BPI 9-track tapes in SEGY
format. 

AG (1990) High resolution seismic lines 21-1, 29-1, 29-2, 29-3, 41-1

Survey Company: Redgrove Surveys
Acquisition Company: JRS Exploration
Direction: 21-1, 29-3 (E to W)
           29-1, 29-2 (W to E)
           41-1 (S to N)

Source Type: Vibroseis
SP/VP Interval: 20 m
Sweep: Linear; 30-140 Hz, 0.5 TAP.
Sweep Length: 12 s
Record Length/Sample Rate: 4 s, 2 ms (41-1: 5 s, 2 ms)

Source Pattern: 2 Vibrators / 20 m (41-1: 4 over 30 m)
Drag: 20 m
Sweeps: 2

Instrumentation: SERCEL
Geophone Type: Mark L25
Frequency: 30Hz
Group Interval: 20 m
Number of Geophones in a group: 9
Geophone Spacing: 2.5 m

Geophone Pattern: 1 every 2.5 m

Spread Configuration for lines 21-1, 29-2, 29-3:
             Tr.120<---0m---> * <---0m--->Tr.120
        Tr.1<-----2380m----->   <-----2400m----->Tr.240

Spread Configuration for line 29-1, (reverse for 41-1):
              Tr.120<---0m---> * <---0m--->Tr.121
        Tr.1<------1580m----->   <-----3200m------>Tr.240