Use of Sedimentary simulations for dating sequence boundaries and measuring ...
295
3
Sequence Stratigraphy and Simulation of the Andros Channel
3.1
Introduction to the Data Set
The sequence stratigraphy of the Andros Channel involves an interpretation of
carbonate platform development, based on seismic data and limited well control
from northwestern Great Bahamas Bank (Fig. 4). This Bahamian seismic data
set consists of a cross-bank profile (Fig. 2) that was part of an approximately 700km grid of unmigrated, multichannel seismic profiles. The top 1.7 s (two-way
travel time) were used for the study. This seismic profile is tied to the Great Isaac
well at the northwestern edge of the Great Bahamas Bank. The time/depth conversion from the Great Isaac well indicates that the entire Cenozoic history is recorded in these upper sections (Tator and Hatfield 1975; Schlager et al. 1988).
The cuttings from this well give some of the initial information on the lithology
and age of the reflectors (Schlager et al. 1988; Eberli and Ginsburg 1987,1989).
More recently, two continuously cored wells positioned on the cross-bank profile record the Late Miocene-Recent progradation of the margin (Eberli et al.
1994).
u..
0 11 -
1(1) C/)'
I ~O
I ~a:
a: C
t-Z
(l)c(
LINE OF SEalON
Fig. 4 Map of Great Bahamas Bank showing location of seismic section modeled in this
chapter
295
3
Sequence Stratigraphy and Simulation of the Andros Channel
3.1
Introduction to the Data Set
The sequence stratigraphy of the Andros Channel involves an interpretation of
carbonate platform development, based on seismic data and limited well control
from northwestern Great Bahamas Bank (Fig. 4). This Bahamian seismic data
set consists of a cross-bank profile (Fig. 2) that was part of an approximately 700km grid of unmigrated, multichannel seismic profiles. The top 1.7 s (two-way
travel time) were used for the study. This seismic profile is tied to the Great Isaac
well at the northwestern edge of the Great Bahamas Bank. The time/depth conversion from the Great Isaac well indicates that the entire Cenozoic history is recorded in these upper sections (Tator and Hatfield 1975; Schlager et al. 1988).
The cuttings from this well give some of the initial information on the lithology
and age of the reflectors (Schlager et al. 1988; Eberli and Ginsburg 1987,1989).
More recently, two continuously cored wells positioned on the cross-bank profile record the Late Miocene-Recent progradation of the margin (Eberli et al.
1994).
u..
0 11 -
1(1) C/)'
I ~O
I ~a:
a: C
t-Z
(l)c(
LINE OF SEalON
Fig. 4 Map of Great Bahamas Bank showing location of seismic section modeled in this
chapter