Mr. G. Tate on Sections of Strata at Scremerston. 857 



Brought over 

 Coal 



Blue metal 

 Coal 



Grey metal 

 Coal 



Black metal 

 Coal 



Black metal 

 Coal 



Blue metal 



Slaty stone 

 Limestone 

 Blue tills 

 Coal 



Fm. 



Ft. 



In. 



Fm. 



Ft. 



In. 



11 



1 



1 



11 

 6 

 6 



7 

 8 

 3 

 8 

 6 

 6 



68 



2 



H 







6 



12 



1 



7 



1 



4 

 3 

 1 











6 



10 



80 



3 



H 







6 



2 



3 



10 









83 



1 



n 



Note on the Scremerston Sections. By George Tate, F.G.S. 



In the Club Proceedings of last year (Vol. V., p. 283,) I 

 proposed to arrange the mountain limestone formation of 

 Northumberland in two divisions ; an upper group — the Cal- 

 careous, containing about 1700 feet of strata, and an under 

 group — the Carbonaceous, containing about 900 feet. Of 

 the Calcareous group the foregoing Scremerston section gives 

 only 60 feet of the lowermost part of that group and only two 

 of the limestone beds, from No. 3 to No. 26 the base of the 

 Dun limestone ; but of the Carbonaceous group, from this 

 base downward, we have a complete section, shewing a total 

 thickness of 917 feet of strata. 



' Reference may be made to the Proceedings of the .Club, 

 Vol. IV., p. 98 to 117, for a section of most of the beds of 

 the Calcareous division, as seen in the neighbourhood of 

 Beadnell. 



The names used by miners in the district are given to the 

 strata in the Scremerston sections ^yrees^owe* are sandstones; 

 metals are soft shales ; tills are hard shales, platy or splitting 

 into plates in the lines of stratification ; girdles are thin hard 

 beds of shales or sandstones. The sump is that part of a coal 

 shaft sunk below the seam for the reception of the water of 

 the mine, and from which the water is raised to the surface 

 by the pumping engine. 



