-
17. X-RAY MINERALOGY DATA FROM THE CENTRAL PACIFIC,LEG 33 DEEP
SEA DRILLING PROJECT1
H.E. Cook and I. Zemmels, University of California, Riverside,
California
METHODS
Semiquantitative determinations of the mineral com-position of
bulk samples, 2-20 µm, and
-
H. E. COOK, I. ZEMMELS
TABLE 1Summary of X-Ray Mineralogy Samples, Sample
Depths,Lithology, Age, and X-Ray Diffraction Results, Site 314
SampleDepth Below
Sea Floor(m)
0.0045 a
(M5a
Lithology
Brownzeolitic
clay
Age
Quat.?
Bulk SampleMajor Constituent
1 2 3
Clin. Magn. Goet.Phil. Mica Quar.Phil. Mica Quar.
2-20 µm FractionMajor Constituent
1 2 3
Clin. Magn. Goet.Phil. Mica Clin.Phil. Mica Quar.
-
X-RAY MINERALOGY DATA
TABLE 3Summary of X-Ray Mineralogy Samples, Sample Depths,
Lithology, Age, and X-Ray Diffraction Results, Hole 315A
SampleDepth Below
Sea Floor(m)
76.682.9
124.9142.6148.9260.0372.1465.9513.5591.0703.6
731.3739.3741.4779.2779.6788.5797.1799.2808.6818.7826.9830.0836.8837.0
850.5856.0858.3875.9893.4
911.3932.7952.8952.9970.9990.0
Lithology
Unit 2:Variegated
nanno-foramand
nanno-radoozes
Unit 3:Claystone,
chert,and
limestone
Unit 4:Volcanic sand-stone and clay-stone interbed.With
clayey
limestone
Unit 5:Red-brown
and blue-greenferr. claystonesinterbed. Withgraded volcanic
sands
Age
o
c c« ao o.SP§
?ö
a
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H. E. COOK, I. ZEMMELS
TABLE 4Summary of X-Ray Mineralogy Samples, Sample
Depth,Lithology, Age, and X-Ray Diffraction Results, Site 316
SampleDepth Below
Sea Floor(m)
0.8
2.7155.3268.3
391.8448.6469.3486.5495.9515.4524.7533.6553.3562.9571.8573.6
583.1584.4587.4609.8610.5613.6630.6638.4641.8642.1667.1668.1686.7704.5705.7727.0744.8771.2830.3
Lithology
U n i t l : a
Unit 2:calc. and
siliceous oozesand chalk
Unit 3:Siliceous chalk,limestone, and
dolomite
Unit 4:Volcaniclastic
brecciaand gradedsandstone,chalk, andlimestone
Age
a
o 0
s «d>
1o
1ou
Io
-
X-RAY MINERALOGY DATA
TABLE 5Summary of X-Ray Mineralogy Samples, Sample Depths,
Lithology, Age, and X-Ray Diffraction Results Hole 317A
SampleDepth Below
Sea Floor(m)
554.2564.5576.9585.0602.4623.3644.1
651.0670.0698.6727.7755.9756.7757.4759.4777.7778.1779.6821.1849.9887.4887.4
927.5
Lithology
Unit 2:Foram-nanno
oozes andchalk withblack chert
Unit 3:Volcaniclastic
sandstones andsiltstones
Basalts withsiltstones
Age
u
β S° 8If
u
so
Mp
£ o
Bulk SampleMajor Constituent
1
Calc.Calc.Calc.Paly.Calc.Cris.Calc.
Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.
Plag.
2
Clin.Quar.Quar.K-Fe.Cris.Calc.Mont.
Plag.Anal.Sani.K-Fe.Hema.Sani.Sani.Anal.Sani.Sani.Sani.Anal.Anal.Anal.Anal.
Mont.
3
Mica
K-Fe.Quar.Quar.Trid.K-Fe.
Clin.
Anal.Plag.Quar.Anal.
Sani.Anal.Calc.Anal.Sani.Sani.
Hema.
2-20 µm FractionMajor Constituent
1
Clin.K-Fe.K-Fe.K-Fe.Cris.Cris.Clin.
Plag.Mont.Mont.K-Fe.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Mont.Anal.Mont.
Plag.
2
Quar.Quar.Quar.MicaQuar.K-Fe.K-Fe.
Mont.Anal.Anal.Mont.Feld.Sani.Sani.Sani.Sani.Sani.Sani.Sani.Sani.Mont.Sani.
Quar.
3
K-Fe.MicaMicaQuar.Bari.Trid.Plag.
Quar.
Sani.Plag.Hema.Hema.Anal.
Anal.Anal.Anal.Anal.Anal.Sani.Anal.
Hema.
-
H. E. COOK, I. ZEMMELS
TABLE 7Summary of X-Ray Mineralogy Samples, Sample
Depths,Lithology, Age, and X-Ray Diffraction Results, Site 318
SampleDepth Below
Sea Floor(m)
1.393.7
122.5179.7
266.5350.8
407.5492.7
578.5581.1615.8630.7665.6703.8734.5
Lithology
Unit l:a
Unit 2:Foram-nanno
ooze
Unit 3:Foram-nanno
chalkUnit 4 :
Nanno-foramlimestoneUnit 5:
Limestone,siltstone,
and gradedsandstone
Age
a
•2 °
à, dD Oo o
O Q. .
• o O
-
TABLE 9Results of X-Ray Diffraction Analysis, Hole 315
SampleDepth Below
Sea Floor(m)
Bulk Sample
1.303.90
57.9059.2061.9065.50
Amor.
20.424.747.626.826.919.0
2-20 µm Fraction
1.303.90
57.9059.2061.9065.50
87.686.789.886.783.891.6
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TABLE 10Results of X-Ray Diffraction Analysis, Hole 3ISA
Arag. Feld.a Quar. Cris. K-Fe. Plag. Kaol. Mica Chlo. Goet.
Paly. Mont. Trid. Clin. Phil. Pyri. Hema. Gyps. Bari. Amph. Gibb.
Magn.
SampleDepth Below
Sea Floor(m)
Bulk Samples
76.682.90
124.90142.60148.90260.00372.10465.90513.50591.00703.60731.30739.30741.40779.20779.60788.50797.10799.20808.60875.90893.40911.30932.70952.80952.90970.90990.00
Amor.
20.517.319.219.720.818.718.717.112.110.218.210.088.313.774.873.366.048.134.244.732.847.256.445.751.844.545.370.8
2-20 µm Fraction
82.90124.90142.60148.90260.00372.10465.90513.50591.00703.60731.30739.30741.40779.20779.60788.50797.10799.20808.60818.70826.90836.80837.00850.50856.00858.30875.90893.40
86.196.190.897.476.995.594.691.595.288.537.690.313.559.648.747.337.353.236.847.649.244.641.134.523.838.248.044.6
Calc. Dolo
100.099.7
100.099.499.2
100.098.6
100.0100.0100.0100.098.461.726.714.6_ __ __ _
88.376.677.250.417.1- __ _
93.6_ _-
8.0
15.2
0.3
0.20.2
0.1
0.23.9
48.123.625.926.628.84.68.78.9
36.848.2
0.675.8
19.953.9
7.95.72.48.42.16.14.4
5.91.01.96.9
35.628.625.126.725.140.828.623.636.525.69.7
1.153.269.5
22.3
12.1
56.7
15.5
8.75.03.87.20.61.21.21.66.4
43.9
2.94.1
19.610.4
_15.714.322.9
13.88.2
13.2
8.711.95.19.29.5
12.717.019.731.0
9.87.1
66.536.810.16.4
6.66.13.24.70.40.80.71.64.24.1
1.41.9
10.113.46.8
40.413.612.44.7
13.85.4
10.3
9.58.33.66.05.46.65.92.3
10.26.4
37.311.75.83.83.9
2.3
12.422.816.017.03.15.74.02.2
12.30.9
14.82.3
36.02.5
9.19.6
16.23.5
6.13.4
12.413.34.4
11.218.57.46.8
23.49.95.71.21.01.6
15.35.9
20.0
2.2
0.7
0.7
12.5
0.8
14.4
9.0
0.9
0.5
2.914.916.914.011.3
1.52.97.43.46.9
32.49.41.2
31.324.2
13.821.124.327.0
1.54.10.64.22.9
16.9_-0.4_
0.50.4
1.5
0.40.6
0.3
0.917.7
5.11.8
2.4
4.113.643.2
8.7
6.75.7
18.5_8.15.16.34.06.1_4.35.00.75.5
47.612.249.016.73.9
—--7.6_-__—__—__-____
7,57.5- -_ _
24.336.325.743.819.744.742.413.214.355.6
2.33.95.6— —9.4
1.91.2
2.9_
13.4
__-__
_____
—-
_0.1—
-_-_-_
-0.1__
—-
_-—
11.251.776.341.8
1.855.968.872.478.948.717.851.0
61.7
8.4
7.4 0.37.33.84.7
0.91.0
-
911.30932.70952.80952.90970.90990.00
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TABLE 11Results of X-Ray Diffraction Analysis, Site 316
Sample DepthBelow SeaFloor (m) Amor. Calc. Dolo. Feld.a Quar.
Cris. K-Fe. Plag. Kaol. Mica Chlo. Goet. Paly. Mont. Trid. Clin.
Phil. Anal. Hema. Pyri. Gibb. Gyps. Bari. Augi. Magn. U-2b
Bulk Sample
0.802.70
155.30268.30391.80448.60469.30486.50495.90515.40524.70533.60553.30562.90571.80573.60583.10584.40587.40609.80610.50613.60630.60638.40641.80642.10667.10668.10686.70704.50705.70727.00744.80771.20830.30
31.815.820.821.629.820.555.222.5-7.311.510.013.129.020.321.4
8.720.674.610.624.852.1
9.016.013.420.435.316.418.87.7
25.944.338.944.738.715.5
2-20 µm Fraction
0.802.70
155.30268.30391.80448.60469.30486.50495.90515.40524.70533.60553.30562.90571.80573.60583.10584.40587.40609.80610.50613.60630.60638.40641.80
86.992.296.395.295.295.832.932.4
-19.866.157.640.149.649.950.045.838.743.644.645.439.643.742.235.634.7
97.699.8
100.094.599.1
100.083.4
97.4 0.534.698.1
0.399.898.996.298.596.398.878.416.395.281.752.097.191.396.080.566.298.295.598.078.577.6
0.158.473.141.895.1
0.3
0.3
0.40.2
0.20.2
0.80.35.31.70.20.71.60.81.01.2
19.236.1
3.215.10.32.22.32.70.10.80.70.71.40.69.30.91.02.51.5
22.327.913.310.313.116.013.49.3
14.730.530.340.241.233.632.438.073.046.857.643.8
1.758.127.039.8
3.3
47.1
80.0
5.3
3.5 1.1
1.3 0.9
0.8 0.5
5.4 5.2
7.47.8
6.22.0
20.013.112.7
2.2
5.713.54.6
17.831.928.014.8
7.6
14.415.713.723.124.619.69.2
12.912.814.9
2.615.0
7.616.044.3
4.84.2
1.81.66.22.90.7-
20.420.3
7.017.420.818.29.85.7
6.32.36.37.77.16.66.0
8.48.37.21.25.93.36.26.4
5.1
1.0
0.9
0.5
1.4
3.3
1.0
1.0
17.51.61.4
1.11.3
0.95.91.3
0.9
11.912.4
-
13.514.15.22.3
21.623.118.716.516.517.017.73.6
11.317.813.63.6
11.48.88.15.9
1.64.44.4
__
-
1.61.21.01.91.2
-0.9
__
1.51.0
_____
3.0
0.9
10.0
1.546.7
0.76.20.64.3
13.61.13.50.6
11.63.46.76.1
30.70.4
6.0
8.1
12.018.1-
I3.3-
__
-
_-1.0
2.51.40.9
2.12.14.0
0.61.32.4
81.0
44.21.14.2
0.7
5.61.8
11.9
5.4
2.49.3
0.41.0
0.20.40.42.2
0.5
1.42.8
42.064.9
0.5
23.419.90.7
13.36.2
8.221.011.6
0.6
0.7
1.7
0.4
0.71.8
0.2
0.49.6
1.23.4
0.4
4.9
1.3
0.5
2.3
0.9
0.1
0.1
1.10.9
0.7
15.3
9.5
0.10.80.20.30.8
0.2
5.2
6.117.3
31.120.044.554.515.714.114.810.2
11.08.0
13.80.8
14.117.623.3
4.0
3.50.91.4
7.9
3.7
6.0
PTR
aw
§
-
642.10667.10668.10686.70704.50727.00744.80771.20830.30
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TABLE 12Results of X-Ray Diffraction Analysis, Hole 317A
Calc. Dolo. Quar. Cris. K-Fe. Plag. Kaol. Mica Chlo. Paly. Mont.
Trid. Clin. Phil. Anal. Hema. Pyri. Gibb. Gyps. Apat. Bari. Amph.
Magn. Sani.
SampleDepth Below
Sea Floor(m)
Bulk Sample
554.20564.50576.90585.00602.40623.30644.10651.00670.00698.60727.70755.90756.70757.40759.40777.70778.10779.60821.10849.90887.40887.40927.50
Amor.
41.27.4
52.556.9
7.1-6.228.744.213.252.548.352.758.251.062.843.058.848.549.144.825.139.447.9
2-20 µm Fraction
554.20564.50576.90585.00602.40623.30644.10651.00670.00698.60727.00755.90756.70757.40759.40777.70778.10c
779.60821.10849.90887.40887.40927.50
30.124.031.449.7
-12.9-33.421.249.1
3.045.663.759.164.666.662.064.858.062.458.556.635.260.939.1
Feld.a
_—_____-___
6.5__-________
Calc
82.997.878.2
-43.734.37,8.7
_—-___-__4.5_-1.40.4_
-
0.3
2.52.28.39.75.90.60.62.10.2
2.32.8
—___
42.255.5
__
-
_
1.5_7.3
10.8-0.94.8_
-
17.1_
0.8_--.-0.43.3
16.0-
11.1_
—__
___
0.6-
_
3.0_5.9----_
-
_
8.1
0.9 63.3
2.3
8.7 36.1 10.5
16.643.034.620.725.1
2.33.15.70.3
3.74.4
—_--
56.675.8
__
-
_
9.647.842.623.7
1.16.1
23.3_1.7-
46.2_
5.94.01.12.80.72.1
15.254.8
-
20.9_
9.05.2
20.021.0
—_
0.81.7 4.1
0.5
8.1
13.4
0.7
2.91.2
10.0 45.3
1.8 1.0
1.1
7.8
5.6
1.0
10.5
0.93.3
37.052.156.129.183.687.376.591.566.681.664.173.840.230.176.64.3
7.8
1.4—1.56.0
71.876.358.669.590.491.795.680.192.884.588.388.868.792.394.813.4
5.54.3----_---_---
—1.23.29.5------__-
-10.0
5.48.6
45.0 3.8
6.9
0.733.8
2.0
23.412.4
2.40.5
11.12.52.84.16.4
25.75.73.8
0.8
1.5
0.1
0.4_
0.2__
—6.0__
0.3
—_2.00.51.5
—__0.71.5
4.60.6
29.1
5.23.88.94.78.37.64.84.21.5
1.413.2
8.3
0.98.6—
0.71.6
11.11.59.5
—1.3
10.2
10.3
45.922.9
I3.7
7.63.04.86.9
17.454.3
8.7_
—-
5.55.5-
_-----0.6
10.6
0.7
0.4
0.9
20.9
7.119.38.5
25.87.3
30.316.537.914.513.0
O
-
TABLE 13Results of X-Ray Diffraction Analysis, Hole 317B
Dolo. Arag. Feld. Cris. K-Fe. Plag. Kaol. Mica Chlo. Mont. Trid.
Clin. Gibb. Quar. Gyps. Apat. Bari. Psü.a Magn.
SampleDepth Below
Sea Floor(m)
Bulk Sample
0.3027.4065.70
102.20141.20179.50220.70227.10266.80312.40352.30389.40
Amor.
23.421.126.520.317.323.735.721.829.529.517.428.9
2-20 µm Fraction
0.3027.4065.70
102.20141.20179.50220.70227.10266.80352.30389.40
31.010.532.580.889.491.9
_94.8
2.632.341.8
-
TABLE 14Results of X-Ray Diffraction Analysis, Site 318
SampleDepth Below
Sea Floor(m)
Bulk Sample1.30
93.70122.50179.80266.50350.80407.50492.70578.50581.10615.80630.70665.60703.80743.50
Amor.
39.427.031.025.230.330.825.029.727.234.710.245.769.458.341.2
2-20 µm Fraction
1.30179.80266.50350.80407.50492.70578.50581.10615.80630.70665.60703.80743.50
48.791.394.795.150.156.756.933.738.172.943.446.437.1
-
H. E. COOK, I. ZEMMELS
TABLE 15Samples Used in X-Ray Diffraction
Analysis, Leg 33 (Compositedsamples are bracketed)
TABLE 15 - Continued
Sample(Interval in cm)
Site 314
3,CCXX
Hole 315
1-1, 130-1321-1, 135-1371-2, 20-221-2, 88-901-3,
85-874-1,143-1454-2,121-1234-2,135-1374-3, 56-584-3, 85-8744,
87-894-4, 116-1184-5, 7-94-5,130-1324-6, 148-150
Hole 315 A
1-1,108-1101-5,90-921-5,95-971-6,136-1381-6,142-1442-1,
140-1422-1,145-1473-1,40423-1,68-703-3, 70-723-3, 74-763-5,
70-723-5,138-1404-3,103-1054-3,117-1195-2,
59-615-2,144-1466-1,87-896-1,92-946-2,128-1306-2,140-1427-1,94-967-1,100-1027-2,
69-717-2, 98-1008-2, 97-998-2,101-1039-1,
108-1109-1,120-12210-1,52-5410-1,70-7210-1,115-11710-6,
100-10210-6,102-10411-1,134-13611-1,146-15015-1,114-11615-2,
82-8416-1, 101-10317-1,7-9
Depth BelowSea Floor (m)
0 4 50 4 5
1.3'1.41.72.43.9
57.959.259.460.160.461.9'62.262.663.865.5
76.682.983.084.984.9,
124.9125.0142.6'142.9145.9146.0148.9'149.6.260.0260.2372.1373.0465.9'465.9467.8467.9513.5"513.5514.7515.0,591.0'591.0
J703.6'703.7731.3 ^731.4732.0
•
739.3739.3741.4 1741.5 J779.2779.6788.5797.1
Sample(Interval in cm)
19-2,118-12019-3,52-5320-1,143-14420-2, 96-97204, 0-15021-2,
32-3421-2, 32-3421-2,4647224,145-14623-2,49-5123-3,130-13124-2,
136-13725-1,138-13925-2,
72-7425-3,48-5026-1,26-2826-1,130-13227-2,119-12028-3, 75-7728-3,
85-8729-2, 136-13830-2,148-150
Site 316
1-1,83-851-1,85-881-2,116-1181-2,118-1202-2, 80-82.52-2,
82.5-853-1,126-1283-2, 72-744-1,124-1284-1, 128-1315-1,110-1155-2,
101-1047-2,133-1359-1,100-10210-1,91-9311-1,135-13812-1,123-12612-2,15-1713-1,56-5915-1,101-10316-1,137-14017-1,77-8017-2,
104-10618-2,109-11118-3, 96-9918-5, 84-8619-1,83-8519-1,146-150194,
10-1420-2,112-11421-1,92-9621-3,
25-2921-3,126-128214,8-1123-1,104-10723-1,54-5624-2, 20-2324-3,
63-6625-1,454725-2, 20-2226-3, 95-9727-2,141-14628-1,64-66
Depth BelowSea Floor (m)
818.71819.5
J826.91828.0]830.0836.81836.8]837.0850.5856.0858.3875.9893.4]894.2
\895.5 J911.31912.3J932.7952.8952.9970.9990.0
0.80.92.72.7
155.3155.3268.31269.2J391.81393.3J448.6\450.0J469.3486.5495.9515.4524.71525.2]533.6553.3562.9571.8573.6583.1584.4587.4609.8610.5613.6630.6638.41640.8]641.8642.1667.1668.1686.7*1688.6]704.5705.7727.0744.8771.2
554
-
X-RAY MINERALOGY DATA
TABLE 15 - Continued TABLE 15 - Continued
Sample(Interval in cm)
30-2, 132-134
Hole 317A
2-1,22-242-1,41-433-1,103-1053-1,128-1303-2, 25-273-2,
28-305-1,93-956-2, 103-1058-1,90-9210-2,128-13010-2,130-13212-4,
5-713-2,49-5115-2, 53-55154,102-10418-2,60-6218-2, 72-7420-3,
50-5222-2, 84-8622-3,18-2022-3, 86-88224,139-141244,
70-72244,107-10924-5,113-11526-1,107-10926-2,
25-2728-1,134-13830-1,88-9233-3, 0 4
Hole 317B
1-1,20-221-1,22-241-1,101-1021-2,102-1041-2, 29-311-6,
100-1021-6, 102-1044-2, 40424-2, 43454-3, 82-844-3, 85-878-2,
70-728-2, 73-7584, 60-6284,
63-6512-1,70-7212-1,73-7512-3,404212-3,434512-5,
60-6212-5,63-6516-1,134-13616-1,136-13816-2, 60-6216-2,
62-64164,100-102164,103-10516-6, 60-6216-6, 62-6420-2,53-5520-2,
98-100204, 58-60204, 60-6220-6, 78-8020-6,81-83
Depth BelowSea Floor (m)
830.3
554.2'554.4564.5'564.8565.3565.3576.9585.0602.4623.3)623.3
J644.1651.0670.0 1673.5 J698.6 \698.7
J727.0755.9756.7757.4759.4777.7778.1779.6821.1821.8849.9887.4927.5
0.3'0.31.11.11.98.68.6.
27.4'27.429.329.465.765.768.668.6
102.2'102.2104.9104.9108.1108.1
,141.2'141.2141.9141.9145.3145.3147.9147.9.179.5'180.0182.6182.6185.8185.8.
Sample(Interval in cm)
244, 70-9025-2, 54-5625-2, 56-58254, 3840254,52-5425-6,
30-3225-6,48-5029-3, 80-8229-3,
82-8429-5,5-729-5,13-1534-2,404234-2, 434534-5, 76-7834-5,
86-8838-3,79-8138-3, 82-84384, 90-92384, 93-9542-2,140-142
Site 318
1-1,129-1321-2, 82-851-3,65-701-3, 72-7814,65-7214,
72-761-5,94-1034-1,41434-1,45474-2, 71-734-2, 74-764-3, 72-744-3,
74-7644 , 70-7244, 74 764-5,52-544-5, 56-584-6, 79-824-6,
83-825-1,75-785-1,78-807-1,75-777-1,78-807-2, 75-777-2,
80-827-3,120-1227-3, 123-12574, 70-7274,
72-7410-2,100-10210-2,106-10810-3,70-7210-3, 72-7513-1,124-12713-2,
33-3515-1,95-9815-2,126-12918-1,71-7318-2,137-13921-1,94-9721-2,18-2021-3,62-6424-1,25-29254,120-12228-2,106-11030-2,
128-132324, 0-3
Depth BelowSea Floor (m)
220.7227.l'227.1229.9230.0232.8233.0266.8266.8269.1269.1312.4312.4317.3317.4352.3352.3353.9353.9'389.4
1.32.33.73.75.25.27.0
93.7'93.895.595.697.097.198.598.699.899.9
101.6101.6.122.5123.9
.179.8'179.8181.3181.3183.2183.2184.2184.2,266.5266.6267.7267.7350.8
'351.3407.5 '409.3 .492.7494.9578.5
'579.2581.1615.8630.7665.6703.8743.5
555