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EOCENE
PALEOCENE
Ageuncertain
CAMPANIAN
Depth belowdrillfloor (metres)
1147
1322
1596
ClaystoneBasaltic lava interbeddedwith thin claystoneand
siltstone
SiltstoneAcidic lava andvolcaniclastics, interbeddedwith
claystone
Gamma-ray log with scale in API unitsGRSonic log with scale in
microseconds/footSONL
209/9-1GR SONL
0 150 200 40
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
Depth[m]
1000 2000 3000 4000 5000 6000
Vp [m/s]
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(a) (b)Offset [m] Offset [m]
Time[s] T
ime[s]
0.00
0.05
0.10
0.15
0.20
Amplituderatio
0 5 10 15 20 25 30 35 40
Frequency [Hz]
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[ ]
[
]
(a) (b)Offset [m] Offset [m]
Time[s]
Time[s]
0300 500 700 900 1000 300 500 700 900 1000
0.2
0.4
0.6
0.8
0
0.2
0.4
0.6
0.8
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D
cosq
2sin
v
0.0
1.0
2.0
D cosqv
D cosq2v
D cosq3v
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Nearfield measurement of 465 inch airgun
Amplitude spectrum nearfield measurement
Measuredhydrophone-vo
ltage[mV]
Amplitude
0.0
300
200
100
0
0
0 20
Frequency [Hz]
40 60
100
200
300
400
500
600
700
800
900
100
200
300
500
400
700
600
0.2 0.4
Time [s]
0.6 0.8 1.0
(a)
(b)
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(a)
(b)
449
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.52.6
2.7
2.8
2.9
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.52.6
2.7
2.8
2.9
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5
649 849 1049 1249 1449 1649 1849 2049 2249 2449 2649 2849 3049
3249 3449 3649
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.52.6
2.7
2.8
2.9
3
3.1
3.2
3.3
Time[s]
3.4
3.5
3.6
3.7
3.8
3.9
4
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.52.6
2.7
2.8
2.9
3
3.1
3.2
3.3
Time[s]
3.4
3.5
3.6
3.7
3.8
3.9
4
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5
449 649 849 1049 1249 1449 1649 1849 2049 2249 2449 2649 2849
3049 3249 3449 3649
449 649 849 1049 1249 1449 1649 1849 2049
CMP
CMP
2249 2449 2649 2849 3049 3249 3449 3649
449 649 849 1049 1249 1449 1649 1849 2049
CMP
2249 2449 2649 2849 3049 3249 3449 3649
Time[s]
Time[s]
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1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0 25 50
Frequency [Hz]
Log(Amplitude)
75 100 125
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