Page 120 - Carbonate Platforms Facies, Sequences, and Evolution

Fig.
110
well
On
1.
The
Ocean
Morocco,
basement
the
known
and
Roman, 1950).
selected
where
(Bernoulli
from
Triassic basement, 2 =
Elmi, 1978, 1983a).
2 = Gravieres F., 3 =
the
northern
&
area
small
+
0
+
rim
+
s t BRES
+
basin.
previous
+
+
of
+
Lemoine,
more than a century and a half.
10
(Ardeche
+
+
basement
Facies
authors
'----'-----'
1980;
Tethys,
and
ridges
20km
events, such as the birth of the so-called
Zones, 3 = Alpine Internal Zones, 4 = Recent.
post-Variscan terrane, 3 =
(Haug,
some
'Department'
Winterer
Variscan and pre-Variscan highlands remained pro­
French Subalpine Basin underwent a strong differen­
eral paper has become available in English. More-
structural research has been completed but no gen­
changes are common, owing to differential subsid­
well into the Jurassic (Lucas, 1942; Owodenko, 1946;
persisted
minent for a long time. The western margin of the
tial step-like subsidence between the old pre-Triassic
large
ence controlled by both local tectonics and global
or
During the last 25
Vivarais 'Province') has been intensively studied for
1911;
S.
&
Ligurian
Bosellini, 1981) or as general variations of sea-level,
years, detailed stratigraphical, sedimentological and
thickness
Elmi
4
Ales F., 4 = Lagorce F. , 5 = Privas F., 6 =
The
CJ
works
fonde:
as
margin').
3
selected as
present
I§
the next well.
well
one
contributions on
as
Deep Continental
Subsidence
of
butions by various
2
paper
the
by Elmi & Mouterde
�
and
the
METHODOLOGY
Drilling
authors
1
I++
attempts
author's
eleven
AND
+-1
to
Flaviac F., 7 =La Voulte F., 8 =
Diagenesis
Project
own
Bordezac F., 10 = Orcieres F. (B) Geological sketch of southeast France. 1 = pre-Triassic basement, 2 =
sites
Biostratigraphy, lithostratigraphy and
of
BASIC
data.
of the
the
(1965), Elmi (1967),
synthesize
sequences
DATA
General location of the study area. (A) The Vivarais Ardeche area along the southeast Massif Central. 1 = pre­
Villefort F., 9 =
B
on detailed field sections and are based upon am-
Alpine External
general presentation can be found in recent contri­
('Geologie pro­
(1982), Elmi et al. (1984) and Elmi (1985c, 1987). A
in a volume edited by
Enay & Mangold (1980) (see also Debrand-Passard,
Detailed
over, many data are scattered in unpublished theses.
Miocene and Pliocene basalts. Faults (circled numbers) : 1 = Pa"iolive F.,
these
Ardeche
It has been pre-selected to be the site of
Biostratigraphic correlations have been established
French
Atrops
the Jurassic have been published
1984; Curnelle & Dubois, 1986). The area has been