Well Bonk
: :;:<: �� -�::\\� · :: : >· >�: : , : :_: .·: ' : :: ..
·. ··· ··� \\\-\
.
\\\\ \\. · .. · ..
JVJ/111/T/1 n 117 nn 11 n J 1 n 1/tT TlT Tit ITT! n 1
®
Smith Knoll
®
©
Doboy
Sound
Sapelo Island
. . ' J�. �:;; �;?;��f:<·�=====:
Ill
. /· · '/· · .;r
1!/l}llfli
Galveston Island
m
10
VE X 50
0 +--- --.- --,- -- -,
0
3km
sea
@ top Pleostoc e?f Rfi ii/n{ : :? ff.f $t ��:: roo �
I ) )�;I -- =��=:?���-� �- � - ;:- � -== - �.::. ��::.�- -=Fig. 3.7. Examples of group 7 deposits. A, B Sand ridges in the North Sea. Stratification within the ridges has an actual dip of about 3°, and represents master bedding
surfaces or reactivation surfaces (see discussion in text; Houbolt 1968). C Channel-fill and spit deposit formed by lateral migration of a tidal channel. Dashed lines are time
lines. Section is parallel to axis of barrier island forming the coast of Sapelo Island, Georgia (Hoyt and Henry 1967). D The Galveston Island barrier system, Texas. Dashed
lines are time lines, with dates derived from 14C analyses (Bernard et al. 1962). Time lines inC and D may be preserved in the rock record as distinct stratification surfaces
comparable to the reactivation surfaces of Fig. 3.5
�
j ,;:
0
�
X'
ec
�