N
m
Lake
Ponfchartroin
1 :: - :- :: · . : _ : ;: :: J sand CB coastal barrier
MB mouth bar
CH distributary Channel
t-= 3 progradational fades
(distributary-mouth and delta-front
D
cloy, silt, silty sand l
·
aggradational facies
(floodplain cloy, silt, peat ;
levee silty cloy}
- transgressive -facies
( boy silt, clay)
----- ------ --------N
Ste Marie
de Ia Mer
Barafario
Bay
Mediferr aneon
Sea
s
Wff afMexicxJ
s
Fig. 3.8. Two examples of postglacial delta complexes built during the last 6 to 8 ka. Above North-south cross section through the Mississippi complex, showing the thin,
overlapping lobes that developed on the continental shelf (numbered 1-16). Lobe 3, the oldest seen here, is about 4.6 ka old (Frazier 1967). Below The RhOne delta. The
greater thickness of this delta probably reflects its location on the edge of the continental shelf. This delta did not build its deposit by lateral delta switching but by steady
seaward growth of barrier complexes, behind which a fluvial and lagoonal delta-plain aggraded. (Oomkens 1970)
..; � 0
Si
g
5· ""
g,
>
g..
� ·
a
e.
§'
� ·
s·
"
[ ;;·
S'
fr
[
!
a
0
0
5
�g.
0
e.
..;
§ 0
[ ro
,
,,