208 



3IR. C. T. TRECHMAXX OX A MASS OF ANHYDRITE 



[June 1913, 



On crossing the railway one meets with the Uppermost Lime- 

 stones (Hartlepool or Eoker Series). The beds now dip more or 

 less regularly eastwards and south-eastwards at a small but variable 

 angle, so that older beds are encountered as one ascends the stream 

 until finally the highest Shell-Limestones are met with at the 

 upper end of the dene. 



Owing to the rapid lateral alteration of some of the beds, the 

 sequence must not be regarded as a constant vertical section. The 

 succession is as follows : — 



Fauna. 

 fSchizodus schlotheimi Gem. 



Highest 



Limestones. 



Hartlepool 



JIOKER 



Series. 



Uppermost 



Shell- 

 Limestones. 



(?) 

 Equivalents 



OF THE 



•Concretionary 



Thickness in feet, 



White limestones, well - bedded,"^ 

 massive in part. Thinly bedded | 

 in the upper and lower parts. ! „q , 

 A massive bed, with much j 

 cross-jointing, is quarried as a 

 building-stone J 



Thin bed of 'roestone,' comprising 

 large and small irregular len- 

 ticles. Very highly fossili- 

 ferous 



Indurated and partly-segregated^ 

 white limestones, developing a I 

 porous and irregular breccia | 

 in parts. Occasionally much Y 

 cross-jointed. The ' roestone ' 

 structure is maintained, de- 

 spite induration 



f Well-bedded, thin, hard lime-" 

 stones, white and yellow, and 

 slightly fetid. Soft at the top, 

 where they are much broken up 

 and cross-jointed. The lower 

 part consists of a fine-grained 

 grey and yellow limestone with 

 cavities, as a rule very thinly 

 bedded. 

 (Well seen near Temps Hole.) J 



Honeycomb breccia with powdery ") 



material ) 



< Well-bedded, yellow, comminuted \ 

 breccia ) 



Spongy breccia, much, broken 7 

 up .) 



Very regularly bedded, yellow 

 limestones, consisting of coarse- 

 grained, soft, yellow beds, occa- 

 sionally much broken up and 

 jointed, intercalated with bands 

 of thin, hard, yellow, fissile 

 limestone. Massive in part, 

 with a hard honeycomb breccia 



L at the base J 



" Well-bedded, porous, partly mas- 7 

 sive limestones ) 



Variable, hard and soft, more or~^ 

 less bedded limestones show- 

 ing intense internal deforma- 

 tion, with pockets of powdery 

 material enclosing portions of 

 hard, granular, porous, com- 

 paratively unaltered rock in 

 stratified masses. Massive 

 honeycomb breccias developed 



locally 



Base not seen. 



Mytilus sept if er King. 

 j Pleurophorus costatus Brown. 

 \JN~atica ( 1 ) sp. 



4 Same as above. 



>5 Same as above. 



20 Xo fossils. 



No fossils. 



No fossils. 



C BaJcevellia ceratopliaga and 

 \ small gasteropoda. 



f Very dwarfed and scanty Shell- 

 Limestone fauna. 



Many fossils, especially in the 

 lower part, where bands full 

 of Epithyris and small 

 ^_ gasteropoda occur. 



