Correspondence — Mr. 11. B. Woodward. 2-39 



Park, — and from these beds the author considered that his Ehaetic 

 pebbles were derived. They have boon briefly noticed by Mr. H. 

 H. Howell and the late Professor Jukes. Mr. Molyneux furnishes 

 some notes on his examination of the beds in situ. The basement 

 bed of the Ehaetic deposits of Need wood consists of a white earthy 

 limestone, from two to four inches in thickness, and containing at 

 times sulphate of strontian. The junction of this bed with the 

 Keuper marls may be seen in the marl quarries of Marchington Cliff 

 on the east, and at several points on the west of Bagot's Park ; also 

 at the bottoms of the hills near Kingstanding and Horecross. It 

 generally occurs nearly horizontally, as, in fact, do all the succeeding 

 beds of the series. The best open section to be studied is at Butter- 

 wich Hill. The Christchurch section of Brakenhurst Hill is of an 

 exceedingly interesting character. These sections show the first 

 fossiliferous zone to consist of yellow sandstone, full of Axinus 

 cloacinus. In the shales of the Brakenhurst Hill section Mr. Moly- 

 neux found casts of Avicula (?), and he has strong hopes of being 

 able hereafter to add many forms to the list of its Rhastic fauna. It 

 is curious that in none of these beds did the author meet with either 

 limestones or sandstones of the same lithological composition as the 

 pebbles found in the gravel, and he therefore infers that the beds to 

 which they belonged have been carried away by denudation, and 

 scattered in detached fragments far over the hill-tops to the east. 

 The maximum thickness of these remaining Ehaetic beds he estimates 

 at 160 feet.— rAe Burton Weelly News, 18th March, 1870. 



coiiiaEsiPonisriDEisros. 



THE EAILWAT-CUTTING AT UPHILL, WESTON-SUPEE-MAHE. 



Sir, — The section in the railway cutting near Uphill, to which 

 Mr. Mackintosh directs attention in the last number of the Geological 

 Magazine, has been noticed by many geologists. 



The Lower Lias is shown resting abruptly against, and indeed 

 dipping under the Carboniferous Limestone. This arrangement can 

 in no way be referred to a buried sea-cliff ; the Lias Limestones and 

 Clays of the ordinary character are cut off sharply, and present none 

 of the conglomeratic or shallow-water appearances that are usual at 

 the margin of this deposit when reposing on the older rocks. 



A fault is the only explanation of the phenomenon; indeed, no 

 other suggested itself to my colleague, Mr. W. A. E. Ussher, or to 

 myself, when we together visited the locality last summer. The 

 hade of the fault, which is south, towards the Carboniferous Lime- 

 stone, gives it the appearance of a "reversed" fault; but whether 

 this is the real direction of the fault or merely a local irregularity in 

 the hade of an ordinary fault, it is impossible to say. The upthrow 

 of Carboniferous Limestone must have amounted to about 100 feet. 



Other faults of little magnitude affect the beds to the north, where 

 the Eheetic and New Eed Marls appear in the cutting. The fault is, 

 indeed, represented on the Geological Survey map, sheet 20, and it 



