Table
T6. Distribution and types of plagioclase phenocrysts, Hole
1188F.
Unit
Fresh
plagioclase
Replaced by
Remarks
27
No
Quartz
28
No
Quartz
± clay
Trachytic
29
No
Quartz
35
No
Quartz,
quartz + anhydrite, illite, illite + halloysite
36
No
Illite,
anhydrite, quartz, and pyrite
39
Some
fresh
Clay,
quartz, anhydrite, illite + halloysite
Trachytic
41
An64
phenocrysts, microlites
Illite
+ anhydrite ± halloysite
42
No
Illite
+ anhydrite
43
No
Illite
+ halloysite
45
No
Clay
+ halloysite
46
An51
phenocrysts, microlites
Incipient
quartz
49
An>33
phenocrysts, microlites
51
Phenocrysts,
microlites
Clastic
52
An62
phenocrysts, microlites
54
No
Quartz
56
No
Chlorite
+ illite
57
Phenocrysts,
microlites
Trachytic
59
Phenocrysts,
microlites
Trachytic
62
An>38
phenocrysts
Clay
65
Phenocrysts,
microlites
Trachytic
66
No
Clay;
chlorite + clay + anhydrite
Trachytic
69
Phenocrysts,
microlites
70
No
Clay
71
Phenocrysts,
microlites
72
Phenocrysts,
microlites