Page 236 - Carbonate Platforms Facies, Sequences, and Evolution

In
I
changes
'
deepening
Hauterivian
testify
W P
conclusion,
facies
G
slightly
to
0
Q)
m
the
and
their
towards
their
I
::J
a
the
O - ® c >- · - ..... - N M - 0 I Q) 2m .52 • 3: 3: I > I ..0 0 (J) Q) <t ..0 0 > Q) 3: 0 > Q) ..0 0 (J) Q) u 0 ..... c ..... Q) Q) ..... I
c
en
0
very
geographical
I
deposition
(J) Q) Q) 0.. en ::J ..c -c c - ..c o ..c (.) c u en c en en - en • • I I I I '/ 'f • fj
� c = 0 3: en ::J ..c 0 u -c 0 0 c ..... c - Q) en .Q en Ef • I 0 0 I I I I 0 � [} = The Jura and northern Subal pine chains
•
on
gradual
a
•
southeast.
distribution
shallowest part of this ramp, located in the Franco-
ramp,
The
lateral
of
base.
0
chains,
locally,
0
Swiss Jura,
was
0 0 0
G
by waves.
..0
Q)
>
0
located
0
co
Q)
3:
3:
found in the southeast
shallowest, to oolitic grainstone. M. mudstone; W, wackestone; P, packstone; G, grainstones.
•
::J
•
a
(f)
u
•
The deepest
well below
::J
Q)
(f)
en
C) (J) 0.. 0 c - c> @ c c >- ·- ..... ..... N MWP en - I I 0 0 (J) Q) '( .!..JJ.!
Q)
(.)
I
I
;_
0..
part
(J) Q) Q) o.. en ::J ..c -c c ..c .Q u c en en - en I I • 'f�
I
� c = 0 3: en ::J .J:i 0 -c c- - ..c (f) 0 u c en I I • I • 0 221
�
was affected by currents and,
outer part of the lowstand wedge. The deepest facies corresponds to hemipelagic facies with sponge spicules, the
fairweather
lowstand wedge. From base to top, wackestone with debris of 'ball-shaped' bryozoans and crinoids, poorly-sorted
0
Q)
bioclastic packstone-grainstone, well-sorted oolitic grainstone, coral reef. (B) Section of the cyclic sequence from the
wave­
Fig. 16. Sketches of lowstand wedge sequences. (A) Section of the shallowing-upward sequence from the inner part of the
of the ramp,
of the northern sub-alpine
at least