Page 202 - Carbonate Platforms Facies, Sequences, and Evolution

in
1872
188
thin
lime
situ
liferous
baroque
Core1
limestone
pack
oolitic
bioherm
� breccta
�Stylolites
[IIJ]] Spongel
� Limes! one
wackestones,
Campelos #1
Er] Solenopora
thrombolite
� Dolomitized
. stones
Argillaceous
&gramstones
G wackestones
Wackestones
� wackestones
190"4
1912
D lime mudstone
1908
1896
1916
=
,
and Tubiphytes ·
mudstone,
specimens
coats,
breccias
bioherms (Fig. 15).
dolomite.
Solenopora
of
of lacustrine ostracod
Cores2&3
400m
and
and
The
the
thick,
some
Trichites.
intercalated
grainstones,
A
Cores4&5
minor
with
sediment
deeper-water
wide
containing
shows
packstones
heads
variety
P.M. Ellis, R. C. L.
-charophyte mudstones inter-
thrombolitic
Fig. 15. Summary logs of cores taken from Ramalhal #1.
The Caba�os formation is 400m thick, and consists
and
limestones
of
which cap the buildup consist of pyritic ammonitic
matrix-rich
good
clasts is contained within the packstones, many with
vuggy porosity, some of which is partially filled with
corals, stromatoporoids and Solenopora, and some
of
Cores 5- 11
and
nantly
electric
2104
can
Wilson and R.R.
be
logs
in Ramalhal
Lourinha #1
occur 120-150
by
#1.
taneous potential
an
2164
2168
Leinfelder
0
E:l
e
G!i
0
Cl
c:/
of lower-energy
recognized
)
)
0
(:J
0
Cl
0
I!>
as
increase
a
in
2460
2452
wackestones,
formation is significantly thinner, at =
caliper
distinctive
above
and
m of porous Solenopora grains
zone
clay content, a decrease of gamma-ray (Fig. 16).
overlying Montejunto formation consists predomi­
spon­
tones.
Though no extensive coring was
600 m, than
undertaken in this well, the three-fold division of the
A cored interval in the Caba�os formation consists
buildup can be recognized. The lower 400 m of the
Deeper-water shales and limestones cap the buildup
on
calated with feldspathic sandstones. The Montejunto
which
and surprisingly, considering its