Page 219 - Carbonate Platforms Facies, Sequences, and Evolution

same

unstable domain.
NE-SW
EARLY
(Arnaud-Vanneau,
northern Subalpine
HAUTER IVIAN,
1980;
direction
APTIAN
Arnaud,
FORMATIONS
(Arnaud,
west part of the early Dauphinais Basin.
BARRE MIAN
1981;
1981).
chains and Jura massif
CARBONATE
It
AND
Fig. 2. Location of the stable and subsident areas. The
Jura-Bas Dauphine platform and the Provence platform
correspond to stable areas, the Dauphinais Basin was an
over both the former Jura platform and the north­
Remane,
Four carbonate platform formations, characterized
by associations of benthic foraminifera, occur in the
region
limestone was deposited during the late Barremian
largely through this palaeotopography that Urgonian
was
3
1
2
2
4
1
by
ary
aff.
This
at
at
1982;
the
marls
the
the
clastic
in
Basin
Diois.
fauna,
stones
the
longing
Vercors.
the
the
limestone
at
Glandasse
Barremian
and
Barremian;
to
(Figs 4 & 5):
elongata
Borne
dated
alpine chains.
top,
(Marne
Vieban,
poorly
and
base,
the
formation
and
the
by
Glandasse
Urgonian
(Nodosoplicatum
The Jura and northern Subal pine chains
basal Hauterivian.
and
oolitic
hemipelagic slope;
association
at
1983;
foot
bioclastic
of
locally
varied
several
exists
and,
wackestone-packstone
bioclastic
of
the
preserved
the eastern Diois,
Borne bioclastic limestone
Pierre Jaune de Neuchiltel
bio-
d'Hauterive;
only
bioclastic
Urgonina
Busnardo & Thieuloy 1989);
ammonites
limestone
packstone
Hauterivian
and
with
the
meters
on
Zweidler,
and
possibly,
as
limestone
It consists of:
of
the Pierre Jaune de Neuchatel
Pachytraga
and
still
limestone
in
the
beginning
Remane,
at the foot
early
Citaella? favrei,
(mostly
1985).
rudists)
limestone
of
marls,
the
formation
Jura
hemipelagic
1982)
the
relatively
limestone,
Formation
oo-bioclastic
the
formation
These
grainstone)
Hauterivian), found only on the Jura platform;
of
(bio­
Aptian throughout the Jura and the northern Sub­
posited close to the Hauterivian-Barremian bound­
lime­
be­
de­
little­
attri­
buted to the late Hauterivian. The benthic micro­
early
are
(usually
(Fig. 4), occurring above the Acanthodiscus radiatus
the
deposited
towards the top of the Barremian and in the lowest
platform
205
southern
The Urgonian limestone rests upon
the Pierre Jaune de Neuchatel in the Jura and on the
late
Cruasense Zones;
Cribellopsis
deposited in the southern Vercors during the early
of the outer
formation
Hauterivian
slope,
known, is characterized at the top of the formation
bioclastic
al pillensis-protuberans
(small-sized forms). This association (Fig. 5) has not
been identified farther to the south in the Barremian
bioclastic limestone of the Chartreuse, Vercors and
and the western part of the Devoluy (Figs 3 & 4).
This formation has been found in the eastern Diois
120-200 m thick, it is dated as the basal Barremian
Consisting of grain-flow deposits in the Vocontian·