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Proceedings of the Royal Society of Edinburgh. [Sess. 
the north-east by the sea. It extends for a distance of 4 miles from the 
mouth of Broxburn to Longcraig. At Longcraig the Limestone Series has 
been faulted against the underlying Cement Stone Series. For a distance 
of about a mile towards the north-west the dip of the limestones is generally 
north at low angles, so that as we go west we successively ascend to higher 
and still higher platforms in the Limestone Series till we reach the topmost 
member, the Barness East Limestone, which can be seen at low-water mark 
near the foot of Dryburn. At this point the dip changes from north to 
north-east, and as we proceed westwards the succession is a descending 
one till we reach the horizon of the Longcraig Middle Limestone. Here a 
fault and broad dolerite dyke break the continuity of the section. The 
fault has a downthrow to the north-west of about 100 feet, and its 
effect is to bring the base of the Chapel Point Limestone against a lower 
limestone, the Middle Skateraw. The general stratigraphical succession 
and faunal sequence, as given in the following table* is so similar to that 
already described at Aberlady Bay, St Monans, and Corrieburn, as not 
to call for any further description here : — 
Ft. In. 
23. Barness East Limestone, Spirophyton cauda-galli ... 6 
22. Strata, chiefly Sandstones ........ 50 
21. Dryburn Foot impure Limestone, Spirophyton cauda-galli . . 2 
20. Sandstone and Shale ......... 10 
H. 19. Chapel Point Limestone, Spirophyton cauda-galli . . .10 
18. Shale and thin Coal smut ........ 3 
17. Fireclay, Ganister and Sandstones ...... 20 
16. Shale and thin flaggy Sandstone ...... 80 
15. Skateraw Upper Limestone . . . . . 2 
14. Black Shale .......... 5 
F. 13. Skateraw Middle Limestone ....... 18 
12. Coal 6 
11. Fireclay ... ....... 1 6 
10. Shale and Fireclay ......... 6 6 
E. 9. Skateraw Lower Limestone ....... 4 
8. Thin Coal in places . . . . . . . . .... 
7. Shale and Sandstone . . . . . . . . .23 
D. 6. Longcraig Upper Limestone . . . . . . .18 
5. Thin Coal in places . , . . . . . . .... 
4. Shale partly sandy with the Hurlet Alum Shale fauna . . 5 
B. 3. Longcraig Middle Limestone, Litliostrotion in reef-like masses . 6 
2. Shale and Sandstone ......... 25 
A. 1. Longcraig Lower Limestone mixed with bands of calcareous Shale 
* This table has been copied from the Geological Survey Memoir on The Geology of East 
Lothian (1916), p. 137. 
