Page 268 - Carbonate Platforms Facies, Sequences, and Evolution

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then
over
Pelagic
east
ment reached
side,
a
rlJForereef talus
ITJ]aasinal facies
Carrillo-Bravo (1971)
carbonates
The Sabinas Basin
stone development.
the Tamaulipas
Barremian-Aptian
trends
and
lies the northern end of
•
arch
perhaps the Golden Lane,
maximum
alles
developed
lv
across
�Evaporites
and
\
1.1"
G
II�
lf1�
the
Tuxpa�:\
VALLES-SAN LUIS POTOSI PLATFORM
over
;.;
1 n 1\
the case across the Golden Lane area.
-\Tampico
(Cupido-Sligo)
Burro-Peyotes
�Back
Cordova
them
( u If o f
reef
after deposition
Mexico
Sabinas
the Valles platform,
uplift
of
and middle Cretaceous. From Viniegra-0 (1981) and
100km
§Lagoonal facies
Albian through Cenomanian rudist reef develop­
Reef development of early Cretaceous age under­
flank of the Coahuila block with much oolitic grain­
platform.
and crosses the Rio Grande into Texas near Laredo.
late Aptian transgressive shale (La Pefia-Otates).
reef-front
Valles-San Luis Potosi platform and the southern
Fig. 11. Map and cross-section of Valles platform in early
and the Lampazos high, crosses the La Babia fault
between the granite areas of La Mula and Monclova
but was not developed
and
Basin
loops around the Coahuila platform on its south and
because
and
these areas subsided into the Gulf. This may also be
the
Coahuila block were bordered by rudist reefs and
J.L.
Wi
be
the
lson
and
ups,
and
It
Ward
author
events,
to
pecially
formed.
margins
Patricia
complex
used
dominant
of
basement
nographic
have
is
horst
sharpened
seems
are
W.
to
wit:
and
the
large
most
the
discussions with,
been stimulated,
grateful
ideas
ward subsidence,
blocks
controls
blocks,
factors,
notably improved
obvious
predict
late Cretaceous
stages
to
parameter.
on
and subsidence rates.
and
one
the
and
Dickerson
extensive
of
the
about
authors
that
grateful
caprinid
Turonian sea-level drops.
timing
University
of
Mexican Neovolcanic belt.
the
to
which
factor
of
Thomas
but were
and
since
coarse
organic
rudists
script by several helpful people.
H.
presence,
opinions,
accuracy of
alone
Karen
Nevertheless,
geological
New
Midland,
sequence
debris
or
platforms
amount
the
the presentation
but
of
toward
may
ACKNOWLEDGEMENTS
basement
Cretaceous carbonate facies development.
of
Gittins
evolution,
Texas;
The interpretations of basement lineaments,
the
it seems
must
not
ideas
Orleans
paper.
structure
Anderson,
of
refined,
absence,
be
its northeastern corner to form an extensive rudist­
partially controls the distribution and trend of car­
ocea­
downfaulted Liassic blocks; and (3) continued gulf­
in a semi-arid climate; (2) the presence of upfaulted­
Many factors control carbonate facies and build­
bonate platforms, the reverse is also true. The distri­
The author is es­
and critical reading of the manu­
into smaller buildups on approaching the Transverse
downslope.
The Golden Lane atoll
a
sea-level fluctuation, and patterns of tectonic activity
eustatic
the Valles-San Luis Potosi platform prograded from
It is apparent that with such
clear
geological
rimmed platform whose southern border breaks up
shelf
Tuxpan granite uplift. Both Valles-San Luis Potosi
and Golden Lane platforms have relief of = 1000 m
also developed in middle Cretaceous time over the
by
University of Pittsburg; Zoltan deCserna, UNAM;
A. Peterson of USGS; and A.E. Weidie and W.C.
of
that palaeotopography resulting from: (1) exposure
structure
bution and orientation of carbonate platforms may
and weathering contrast between granite and schist
controlled both late Jurassic and
These platforms continued building sporadically into
affected by at least
faults
have
two unconformities owing to latest Cenomanian and
who
The
the
James
have
and
the