128
DOMINANT
WIND
DIRECTION
a
Chapter 3 Coastal and Shallow Sea Sediments
FS
LOSS OF SEDIMENT_~~~~
TO DEEPER WATER
HIGH INPUT BASINS
b lOW ENERGY (WAVES)
(} () y,ltI ; :
, -- --- .-- --- .--. --. . . . - ..f':: c:=....~
I - -
b 1 HIGH ENERGY
(STORMS)
e
1) MUD
MUD-DOMINA TED
FAIR -WEATHER SAND + MUD
- - - - - - - - - , ____ WAVE BASE
2) SAND +MUD
I
CONTINENTAl:
DEPOSITS
SF
FAUNA
IN PLACE
MT
I
HOST
I
SEC ,
I
' -
1
I
~
1
SiGI
FAUNA
,
SAND+MUD
, - - - - - - - - - - -
----.
Sh
ST, DISTAL
STORM -DOMINA TED
TlDE-DOMINATED
SAND+MUD
BLG
" " " "- " , "
!
TlDAl
BlC
CHANNELS
Sh, Gr
SW + MD
TlDAL
SAND RIDG
ST ,
REWORKEI
' - - - - - - - - - - - - -
Fig. 3.20. a Shallow sea with locally low or rapid
pro gradation of shorelines controlled by coastal morpho1ogy, position of river delta, and prevailing wind
and current directions. band c Facies models for
low-energy, rapid1y prograding coastlines (regressive
sea) and resulting vertica1 sediment successions.
d Wave-dominated basin. e Tide-dominated basin.
All basin receive high input of terrigenous material,
predominantly mud (b) or both sand and mud (c-e).
Stab1e sea level, no subsidence. Legend see Fig. 3.21