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Contributed by Yale Peabody Museum of Natural History.
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Transcription
Drill hole logs Book I, Holes 1 to 26.
U.S.B.M. Project #823
Castleman Basin, Maryland.
Re' clays (Holes 1 to 3 inclusive emended from logs
of T.W. Amsden. Some clays rechecked. T.W.A.
did not separate hard and soft clays and
rarely separated silty clays from non-silty.
Not all clays in holes 1 to 3 were rechecked
for these 2 characteristics. All clays
in T.W.A' parts of logs for holes 4 + 5
were checked and emended where necessary)
36 134
37 138
38 141
39
40 147