SOUTHERN CORDILLERA: SBC, Duncan Lakes Vibroseis Lines (1984)

Survey Company: Canex Exploration Services
Acquisition Company:  Petty Ray Geophysical Division, Geosource Inc.
Direction: E to W: 1.0, 2.07, 2.2,
           W to E: 1.1, 1.2, 2.0, 2.1, 3.1, 4.0, 5.0, 5.1, 5.15, 5.2, 5.4, 5.5, 6.0
           NW to SE: 2.05
           N to S: 2.04, 9.0, 12.0, 15.0, 15.1
           S to N: 10.0, 16.0, 16.1, 17.0
           SE to NW: 7.0
           SW to NE: 5.25, 6.1, 8.1, 11.0, 18.0

Source Type: 4 Vibrators over 165 ft
SP/VP Interval: 220 ft
        (330 ft for 1-E, 2.04, 2.05, 5.15, 5.25, 7.0, 6.1, 12.0, 15.0, 15.1,
                16.0, 16.1, 17.0, 18.0
Sweep: 14 - 58 Hz
        10 - 58 NL for 1-E, 2.05, 2.06, 5.25, 6.1, 7.0, 8.1, 9.0, 10.0, 11.0,
                12.0, 15.0, 15.1, 16.0, 16.1, 17.0, 18.0
Sweeps: 8
 (12 sweeps for lines 1-E, 2.04, 2.05, 2.07, 3.1, 5.15, 5.25, 6.1, 7.0, 8.1,
                9.0, 10.0, 11.0, 12.0, 15.0, 15.1, 16.0, 16.1, 17.0, 18.0
Sweep Length: 12 s
Record Length / Sample Rate: 21 s, 4 ms
        (20 s records for 2.05, 2.07, 5.15, 5.25, 6.1, 7.0, 8.1, 9.0, 10.0,
                11.0, 12.0, 15.0, 15.1, 16.0, 16.1, 17.0, 18.0

Instrumentation: MDS-16
Geophone Type: Geospace
Frequency: 10 Hz
Group Interval: 110 ft
Geophone Pattern: 20 over 220 ft

Spread configuration for most lines:
 *  660 ft <-----> 11100 ft
    Tr. 1          Tr. 96

Spread configuration for lines 1-E, 2.04, 2.05, 3.1, 5.15, 5.25, 6.1, 7.0, 8.1,
                      9.0, 10.0, 11.0, 12.0, 15.0, 15.1, 16.0, 16.1, 17.0, 18.0
 4730 ft<----> 440*440 <----> 9130
 Tr.: 1 <----> 40 * 41 <----> 120