2 ~
10
0 o
10
20
30
i
MID NORTH SEA HIGH
~Zl
Middlesbrough ~~
Eskdale"
Lockton"
Z2
Z3
SOUTHERN
NORTH
SEA
BASIN~
Grimsby
100 Km.
i
9
KEY
J._z.J. Zechstein
Reef
fronts.
Great
Yarmouth
LONDON - BRABANT PLATFORM
i
l
,
55 0
54 ~
,
53 ~
Progradation of Zechstein reef fronts
A
Zl---~I
Z2 ---~J
Z3 "--~1
B
m
t
200
_..........
9 .........................
9 9 9
9 9
9
o
9 9 9 9 9 9
.........
9 9
9 9
~''""'":'"''-'"'''^'^''A
^ ^-*
*
^ ^^ ^ ^
9 ;
9
.
;
-~
~^
....
^ ^
^ "
^
^ ^^^
^^ ^~
i~,~^
^'~-~,- / //~"-,C
^
^
^
A
^
.............
9 ....~--:-~...
~
^.... ^ ^ .~
9 .
,
o~ 9 ...-...-~
-91
150 K m.
...=
Cross-section along the line A- B.
Bunter.
t
Zechstein.
~Kupferschiefer.
t
Rotliegende
Sandstone.
Evaporites.
~
Carbonates.
~
Red beds.
Fig. 6.64. Map and cross-section showing the cyclic progradation of the Zechstein (Upper Permian) barrier
"reef" of the southern North Sea basin. This is coeval with, and similar in many ways to, the Capitan "reef"
illustrated in Fig. 6.62. (After Taylor, J. C. M. and Colter, V. S. 1975. Zechstein in the English Sector of the
southern North Sea Basin. In "Petroleum and the Continental Shelf of Northwest Europe" (A. E. Woodland,
ed.), pp. 249-263, Figs. 2 & 3. Courtesy of the Institute of Petroleum.)