106
Chapter 3 Coastal and Shallow Sea Sediments
INNER SHELF
a
LOWER TO MIDDlE SHOREFACE
AMALGAMATION
PARAUTOCHTHONOUS FAUNA
MIXED FAUNA
b BYPASS MODEL
TEMPESTITES
BYPASS ZONE
SE~LEVEL _ _ _
_ ._.r~~Yl~BA?E
-!l INCREASING BASINWARD
C
SILICICLASTIC SEQUENCE
M
SHELF MUD
:m } DISTAL
pi
TEMPESTITES
Spl
Swr
FINING -
~~~~
Spl
UP
r
Shc
(DEEPENING)
PROXIMAL
TEMPESTITES
~:t. Shc
Sgr
HUMMOCKY
' 111t AND SWALEY
~
CROSS-STRATIF .
SHOREFACE
Fig. 3.8. a Facies model of storm deposits in cross
section from shoreface to inner shelf with proximaldistal trends. b Bypass model (after Myrow 1992);
note lenticular-wavy bedding in distal region. c Idealized deepening (thinning) or fining upward
BARRIER LAGOON
.\---.
d
CARBONATE SEQUENCE
COARSENING-UP
(SHALLOWING)
1
1m
1
CRINOIDAL
SHELLV
LIMESTONE
CHANNEL FILL
(SKELETAL
I """-",-..r':;'-.;:':-:" -;' I PACKSTONE)
PROX IMAL
i;~r TEMPESTITES
DISTAL
IülrIllflliilltimi TEMPESTITES
siliciclastic tempestite sequence. d Coarsening
(thickening) or shallowing upward calcareous
tempestite sequence (number of beds reduced).
(Mainly based on Dott and Bourgeois 1982; Aigner
1985)