mededelingen der zittingen bulletin des seances - Royal Academy ...

BE CF.
HR. I
03
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h,
ARCHEO­
LOGICAL
b l a c k so n
CLA Y I
BLACK
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CALICHE
CLA Y II
CALICHE
CLAY 111'
CALICHE
CLAY IV
VOLCANIC
CLASS
f ri LIQHE,
CLA Y V
VOLCANIC
CLASS
CLAY I
CLA Y III
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SOIL CLASSIFICATION
SANDS, SILTS AND BLACK OR
BROWN CLA YF. Y SILTS WITH
HUMUS AND A R TIFACTS
FINE PUMICE SAND SILTY CLA Y
FISSURED SILTY CLA Y, ROOT HOLES
BROWN AND REDDISH BROWN SILTY
CLA Y WITH MICROSCOPIC SHELLS
CAA VÈÏLTV t l A Y SAND Óa LÓIUM "
CARBONATES_____________
LA YERSr OF OLIVE CREEN A ND
BROWN SILTY CLAY
OLIVE CREEN SILTY
LA YERS OF OLIVE CREEN AND BROWN
SILTY CLA Y WITH MICROSCOPIC SHELLS
OLIVE CREEN SILTY CLA Y
DEPOSITS OF SILT FINE SAND. CLA Y
AND CALCIUM CARBONATES AND
ANDESm CPEA GRAVEL
LACUSTRINE CRA Y AND OLIVE
CREEN CLA Y INTERCEPTED B Y
A WHITE FINE SAND STRA TUM
OF VOLCANIC CLASS
SERIES OF DEPOSITS OF ANDES/TIC
CRA VELS SAND AND SILT CEMEN­
TED WITH CLA Y OR CALCIUM CAR
BONA TES THE TOP OF THE DEPO­
SIT CONTA INS VER Y HARD SLAB­
LIKE SILICIOUS CONCRETIONS
LACUSTRINE BROWN CLA YE Y
SILT WITH ROOT-HO LES
w biTÈ V Ö im W C CLASS SAND
______ < J ïl> f SIT/C CRA V U
LACUSTRINE OLIVE CREEN
CLA YE Y SILT
ANDESITIC COARSE MA TER IA LS
FLU VIAL AND ALLU V IAL ORIGIN
A T 300 M. DEPTH A FLOOR LEVEL
20 M. THICK OF CRA Y CLA YE Y -
SILT WITH TRACES OF PEAT
r
HVI TER
CONTENT
CONSIST­
ENCY
V E R Y S O F T
T O
VF. If Y S T I F F
V EX Y S O F T
VF.R Y S O F T
T O
M E D IU M
M E D IU M
S T I F F
H A R D TO
V E R Y
H A R D
S T I F F
T O V E R Y
S T I F F
V E R Y
S T I F F
V E R Y
H A R D
S T I F F
T O V ER Y
S T I F F
S T I F F
T O
V E R Y S T I F F
V E R Y
S T I F F
VF.R »'
H A R D
Fig. 6b. — Profiel van de ondergrond van het centrum van Mexico City.
COMPRLS5
ib i l it y
M E D IU M
TO
V F.R Y L O W
M E D IU M
T O
H IC H
H IG H
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V E R Y H IC H
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V E R Y
H IC H
V E R Y
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VF.R Y
LO W