Page 10 - The Geological Interpretation of Well Logs

Key

LITHOLOGICAL SYMBOLS
Shale Limestone

Shale (alt.) Dolomite

+ + +
Organic shale +t + tH Salt (halite)
t+ + +

Silt Anhydrite

AAAAAN
cse AAAAAAA Gypsum
AAAAAAA

med, Sandstone

fine | Volcanic

coal
coal debris —L carbonate cement

SEDIMENTARY STRUCTURES
SEDIMENTOLOGICAL FORMAT 7/4// cross-beds Vos vertical burrows
Carbonate
— current A ;
egl ripples roots
cse —-”A\ wave PP
Sandstones
me === horizontal laminae shelts
fi Silt
“X* irregular laminae © oolites
Shale
Organic shale
cD concretion
Coal
og horizontal burrows

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