322 



Notes and Comments. 



BLEA WYKE BEDS. 

 The paper by Mr. R. H. Rastall in the recent issue of the 

 'Quarterly Journal of the Geolog-ical Society,' entitled 'The 

 Blea Wyke Beds and the Dogger in North-East Yorkshire/ 

 clearly proves that there is still much good work to be done 

 in the Geological field, even in those areas which have been 

 frequently worked by geologists. Notwithstanding the frequency 

 with which the geological features of North-East Yorkshire have 



Fig. I.— Contemporaneous Erosion of the Lias, East Cliff, Whitby. 



5 — Shales of the Estuarine Series. 2 — Ironstone-band. 



'4 — False-bedded Sandstone. i — ■Upper Lias (Alum-Shale). 



3 — Ferruginous conglomerate. S, S— Shingle of beach. 



been examined and described by most able workers, Mr. Rastall 

 has been able to add to our knowledge of this interesting area. 

 At the outset he has tackled the question of the exact strati- 

 graphical position of the Blea Wyke beds and their relations to 

 the beds above and below them. To him they have also yielded 

 much interesting information on the history of the Peak fault. 

 Mr. Rastall finds that a perfectly complete transition from the 

 Lias to the lower Estuarine series is only seen at Blea Wyke ; 

 elsewhere the sections show some signs of unconformity, in 

 most cases clearly shown by a well-marked basal pebble bed. 



THE PEAK FAULT. 

 Mr. Rastall has many other interesting observations in his 

 notes, particularly in reference to the Peak fault ; but having- 

 drawn attention to it, we must leave our readers to peruse the 

 paper for themselves. It is illustrated by two drawings of 



Fig. 11.— Boulby Alum Works, Eastern Quarry. 



6 — Shale of the Estuarine Series. 3~Impure Coal. 



5 — Sandstone of the Estuarine Series. 2 — Ironstone. 



4 — Conglomerate. 1, 1, i — Akun-Shale. 



>iaturalist, 



