34 



GEOLOGY OF THE CAMPSIE HILLS. 



Two sections taken, one at Murray s Hall, and the 

 other near to the Village of Campsie. 



The strata at Murray's Hall. 



Feet in 

 thickness. 



1. Vegetable soil, about 2 



2. Trap, columnar, - 60 



3. Trap, amorphous, 16 



4. A narrow line of trap 



much decomposed, 2 



5. Trap, compact, - S 



6. Sandstone, - 3 



7. A narrow strip of slate- 



clay. 



8. Sandstone, - 8 



9. Slate-clay, - 6 



10. Dark bluish-grey lime- 



stone, - 3 



1 1. Slaty-clay, mixed with 



glance-coal, 4 



12. Sandstone, - 13 



13. Slaty-clay, containing 



narrow lines of sand- 

 stone, - 8 



14. Slaty-clay almost black, 17 



15. Dark bluish-grey lime- 



stone, with entrochi 

 and small particles of 

 pyrites imbedded, 6 



16. Bituminous shale pass- 



ing into slate-clay, 6 



17. Bituminous shale, with 



a mixture of calca- 

 reous matter and py- 

 rites. The thickness 

 of this stratum not 

 known. 



157 



The strata near the village 

 of Campsie. 



1. A thin vegetable soil. 



2. Blue clay mixed with 



water-worn stones. 



3. Sandstone. 



4. Slaty-clay, soft. 



5. Sandstone. 



6. Slaty-clay, indurated. 



7. Dark bluish-grey lime- 



stone. 



8. Slaty-clay with lenticu- 



lar iron-ore. 



9. Coal. 



10. Slaty-clay. 



11. Slaty-clay, mixed with 



calcareous matter. 



12. Limestone, somewhat 



lighter in colour than 

 No. 7. 



13. Clay-marl. — The miners 



here have never pene- 

 trated as yet to the 

 bottom of this stratum, 

 and the thickness of 

 each stratum in this 

 section was not ascer- 

 tained with a sufficient 

 degree of accuracy, to be 

 mentioned here. The 

 coal. No. 9-> is four feet 

 thick. 



