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Table T6. Example of Expedition 301 alteration log.

Hole Core Section Piece number     Length (cm) Rock color/Alteration type (%)         Comments
Interval (cm) Dark
gray
Brown Black
halo
Light
gray
Green
halo
Glass (%) Vesicles
Top Base Glass Altered (%) Minerals
1301B 1R 1 1 0 3 3 70
30

50 50 <1 Sap
1301B 1R 1 2 4 18 14 70
30

50 50 <1 Sap
1301B 1R 1 3 18 24 6 40
50 10
15 80


1301B 1R 1 4 28 36 8






<1
MBNU
1301B 1R 1 5 37 39 2 30 2 68



<1

1301B 1R 1 6 41 49 8 90
10

40 50


1301B 1R 1 7 52 56 4









1301B 1R 1 8 57 63 6 30
70






1301B 1R 1 9 65 70 5 50
50



2 Sap, FeOx
1301B 1R 1 10 70 74 4 60
40



3 Sap, FeOx
1301B 1R 1 11 75 83 8

40





MBLIN
1301B 1R 1 12 83 85 2 60





3 Sap, FeOx
1301B 1R 1 13 102 103 1









1301B 1R 1 14 105 117 12








MBSTE
1301B 1R 1 15 117 123 6 80


20

3 Sap, FeOx
1301B 1R 1 16 124 134 10 40
60

2 100 3 Sap, FeOx
1301B 1R 1 17 134 138 4 100



20 95 3 Sap
1301B 1R 1 18 140 144 4 40
60



3 Sap, FeOx
1301B 1R 1 19 144 147 3 40
60



3 Sap, FeOx
1301B 1R 2 1 0 3 3 50
50



3 Sap
1301B 1R 2 2 4 6 2 50
50



3 Sap
1301B 1R 2 3 7 12 5 50
50



3 Sap
1301B 1R 2 4 14 18 4 40
60

5 90 3 Sap
1301B 2R 1 1 0 5 5 69
25 6


3 Sap, FeOx
1301B 2R 1 2 5 9 4 69
25 6


3 Sap, FeOx
1301B 2R 1 3 9 12 3 69
25 6


3 Sap, FeOx
1301B 2R 1 4 12 15 3 69
25 6


3 Sap, FeOx
1301B 2R 1 5 16 18 2 69
25 6


3 Sap, FeOx
1301B 2R 1 6 19 23 4 69
25 6


3 Sap, FeOx
1301B 2R 1 7 23 30 7 69
25 6


3 Sap, FeOx
1301B 2R 1 8 31 40 9 69
25 6


3 Sap, FeOx
1301B 2R 1 9 40 44 4 69
25 6


3 Sap, FeOx
1301B 2R 1 10 45 55 11 100



20 50 4 Sap
1301B 2R 1 11 55 72 17 60
40

2.5 80 4 Sap, FeOx
1301B 2R 1 12 73 118 45 80
20



5 Sap
1301B 2R 1 13 121 127 7 20
80



5 Sap
1301B 2R 1 14 128 132 4 20
80



5 Sap
1301B 2R 1 15 134 144 10 40
60

10 50 3 Sap

Note: sap = saponite, FeOx = iron oxides. Comments column includes sample codes (e.g., MBNU, MBLIN, and MBSTE) for pieces taken as whole-round microbiology samples, which were therefore not described. Only a portion of this table appears here.

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