Page 48 - The Petroleum System From Source to Trap

40 Smith

sw N E
PROJ. 1.7 MI. - 8 000 FT.
COST NO. 2 700 800 900 1000 1100 1200 1300
600
500
0 SP 200 300 400 - o
� 1
(/)
0
u
U.J
� 2 ���-----------L--1
(/)
� t1r----B;LU�;------
>- 1/)
� 3 3 �
I 0
0 z
3: 0
1/)
1-
4 4

L E G E N D
BA S IN FILL - Late Eocene to Recent nonmarine to marine mudstone, siltstone, sandstone, and tuffs
- R E D -
� PRE-RED SEQUENCE - Late Cretaceous to early Eocene (?) non marine and shallow marine, sandstone, mudstone,
;::;..:::: conglomerate, tuffs, and coal.
- GREEN -
BJ SEWARD BASEMENT - Precambrian and lower Paleozoic metamorphic rocks, intruded by Cretaceous granitic stocks

""' FAULT WHICH CUlS RED

Figure 2.22. Seismic line 81-493-2513 through center of Stuart subbasin showing the pre-red sequence, the basin fill
sequence, and faults cutting the pre-red unconformity.

sw NE
PROJ. 1.7 M I .
C.O.S.T. ,8000 FT.1
112
SP 200 400 600 800 1000 1200
0�----�----�--��--��--��--�----�----�----�----�----�----�----

4 0
[1]

[] - - - BLUE
-
R
ED
E2J - -- GREEN
Figure 2.23. Interpreted cross section through the center of Stuart subbasin along line 81-493-2513 showing the gas­
expelling region and the distribution of seals and sands.