Northumberland and Durham. 



31 



Section of the Strata at Hartley Colliery. 





Fs. Y. F. 



In. 





Fs. Y. F. In. 



Clay, Sand, &c. to the Coal 



- 5 







Brought forward 57 I — 7 



Post 



. 16 1 — 







Grey Thil 



. 3 



White post 



. 2 1 2 



2 



White and Grey post 



— 1 — 3 



Benton Seam 



. — 12 



2 



Blue Metal 



16 



Clay 





3 



Black ditto mixed with Coai 



. — 1 — 9 



Ghound Coal . 



. 1 



4 



Grey post 



2—14 



Thil of ditto 



1 



— 



Grey Metal Stone 



1 



Blue Metal 



— 1 1 



8 



Grey Metal 



2—14 



Black ditto 



— 1 2 



1 



Black ditto 



14 



Blue ditto 



3 1 — 



5 



Coal with Metal bands 



2 4 



Black ditto 



3 1 — 



11 



Thil and Grey Metal 



2 — 



Grey ditto with girdles 



. 3 1 — 



1 



Grey Metal Stone 



1111 



Blue ditto 



— 1 — 



11 



Black Metal and Coal pipes 



2 6 



Metal Coal . 



1 



10 



Coal mixed with Metal 



— 1 



Thil 







5 



Grey Thil 



6 



Grey Metal with post girdles 



1 1 1 



1 



Grey Metal stone . 



2 — 



White post 



— 1 1 



— 



Blue ditto 



— 1 1 — 



Whin 



1 



7 



Grey Metal Stone 



1116 



White post 



— 1 — 



3 



Grey Seamy post 



11—6 



Blue Metal 



2 



G 



Grey Metal Stone 



_ l 



White post 



2 1 — 



6 



Ditto with girdles . 



1 10 



Grey Metal with girdles 



2 



8 



Black Metal 



1 — 



AVhite post 



— 1 1 



6 



Coal 



2 3 



Grey Metal 



2 



4 



Grey Metal 



11 



Blue ditto 



. 2 1 1 



9 



Coal with Metal band 



1 10 



Mixed Coal and Stone 





6 



Grey Thil 



4 



Black Stone 



1 



6 



White and Grey post 



1 1 



White post 



2 



2 



Grey Metal Stone 



18 



Grey Metal 



1 



2 



Blue ditto 



3 



Post girdle 







3 



Black ditto 



Ill 



Grey Metal 





4 



Coal 



1 



Post girdles 







10 



Grey Thil . 



4 



Grey Metal 



2 



4 



Blue Metal 



— 1 — 8 



Blue ditto 







4 



Grey Seamy post 



— 1 1 — 



White post 



4 1 — 



5 



Blue Metal 



— 1 1 9 



Blue Stone 



— 1 2 



9 



Black Metal 



14 



Yakd Coal 



— 1 — 



7 



Main Coal 



— 1 1 5 



Carried forwarc 



57 1 — 



7 



83 2 3 



Dip of the Strata west-north-west. 



