Page 385 - Carbonate Facies in Geologic History

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Table XII-2. Parameters influencing carbonate accumulations plotted against tectonic-
Increasing subsidence

Geosynclines Basins

Turbidite Lepto Leptoeuxinic Mounds Open circula-
filled tion shelf, shal-
low basin
2 2
------------~--------~-------------------------------------------------------
·~i.s
""'"
-- "
gj,,~
-"'-
'" " 0
Fills basin Doming and
with shelf and faulting con-
land debris trols trend;
of mounds

Hypersaline brines may induce
lack of turnover, euxinic
conditions encouraged

Storm wave
base affects
bottom

No currents - stagnant
H 2 S reducing conditions

Turbidity Faint currents Shapes and Only strong
density flows -Ripple originates enough to
marks mounds by winnow fine
piling sediments

00'
=';;
-0 ... =
.- =' bO
= (.) ....
. ~ =
~"
" " =
e Forms mounds Small mounds
at or below
" 0
~';; photic zone