Field Notebook: MD 1945f
Page 83
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Transcription
Hole 43 (continued) 36'8" 39'4" 2'8" Gray medium to fine grained micaceous sandstone showing rapid changes grain size; upper 1' carries streaks and inclusions blackilty shale; lower 1' shot with coaly + cloey streaks and partings. 39'4" 49'4" 10' Light gray medium grained sandstone, zone of coaly partings 42-8 to 44-8, some scattered below this. 49'4" 50'2" 10" Black clay shale 50'2" 50'11" 9" Slaty shale + slate' 50'11" 55'11" 5' Gray to dark gray silty shale 55'11" 57'6" 1'7" Black clay shale 57'6" 57'10" 4" Black waxy semi-hard clay 57'10" 58'1" 3" Coaly black shale 58'1" 63'5" 5'4" Hard clay as follows:- 5" Black top block' clay 33" Gray flinty, block clay numerous scattered dark specs but no true nodules. 26" Sileclitic block clay (becomes gradually softer downward + sileite content increased) 63'5" 64'5" 1' Extremely silelitic shaley -block. So much silelite that character of matrix is obscured. 64'5" 65'10" 1'5" Extremely sileclitic greenish gray shale, gradational with above. 65'10" 66'3" 5" Greenish highly micaceous fine grained sandstone. 66'3" 69'1" 2'10" Greenish siltstone, sandy streaks 68-2 to 68-6, silelitic