532
Chapter 11 Sediment Supply, Subsidence, and Basin Fill
BAl TIMORE CANYON TROUGH, CROSS SECTION
50 km
o
------------------------- --- --- ---- ---=-==-~~;;;::;.::..~
P + Q
~~~~~~
+- + -I- SYN-RIFr .. ·:··~.:~,:
10 + BASINS t ';'
km.j..
!- ... ~ ..
-
ISOPACHS (km)
JUR.-lOWER CRET
CARBONATE SHElF
'0
20
km GRUST AND
PAlEOZOIG SED .
U.CRET,- PlEISTOGENE
GLASTIG WEDGE (1- 4)
500 km
c
Fig. 11.32. a Present-day Mississippi drainage area.
b Prograding of Cretaceous to Recent deposition into
the Gulf of Mexico forrning a huge clastic wedge. c
Cross-section of b. (After Matthews 1974, modified). d Isopach map of Jurassie to Recent sediments
along the US Atlantic passive margin with
depocenter in Baltimore canyon trough. e Cross-section thrOUgh Baltimore canyon trough. (After Grow
et al. 1988; Pazzaglia and Brandon 1996, simplified)