Vol. 69.] BATHONIAN ROCKS OF THE OXFOPvD DISTRICT. 49^ 



(J) Hanborough Well, by the Station cottages. 



The thicknesses are given by the well-sinker ; and, as he is a 

 quarryman in the Bladon and Gibraltar quarries, his descriptions- 

 are to be relied on. 



Approximate thickness in feet.. 



Bubbly limestone (Cornbrash) : same as top of Bladon Quarry 8 



Bed a. Stiff blue clay, passing into rock 12 



Bed b. Shelly blue limestone 2 



Bed c. Compact limestone 6 



Bedd. Clay , 3 



On the evidence of the well-sinker, the blue argillaceous lime- 

 stone (Bed /) of Bladon Quarry is the same as the shelly blue- 

 limestone (Bed b) in the well ; I was fortunate enough to be able 

 to verify this. 



(k) 1 Hanborough Quarry (near Mill Wood) : 

 western end of Long Hanborough. 



There are two quarries close together, which yield the following 

 section. 



Southern Quarry. Northern Quarry. 



Thickness in feet incites. Thickness in feet inches. 



Gravel 5 to G Gravel to 1 



flmpersistent clay ... (5 

 Marl with Microthij- 



ris lagencdis 8 



Compact limestone Limestone with Pseudo- 



{ yielding Pseudo- monotis echinata... 2 to 3 



g I monotis echinata. ' 2 6 



Dark clay-band 4 Dark clay 4 



I Terebratula-interme- 2 Terebratula - intermedia 



{ diet Limestone. (seen) Limestone 3 



■g « I Bluish-grey clay 3 4 



£-£ \ Coarse, shelly, oolitic 4 



f§ 4h 5. limestone. (seen) 



(/) Woodstock Railway-Cutting. 



A cutting on the Woodstock Branch of the Great "Western 

 Railway has been described by Mr. H. B. Woodward. 3 The full 

 thickness of the Cornbrash was here found to be 11 feet 8 inches, 

 while that of the Forest Marble is stated to be 19 feet 6 inches. 



The Great Oolite was exposed for a depth of about 30 feet; the 

 top bed is evidently the same as the oolitic type of the Fossiliferous 

 Cream Cheese of Gibraltar Quarry ; also the bed with Astarte and 

 Gervillia is evidently Bed 5, and the bottom bed the Second Tere- 

 bratula Bed of the above-named quarry. 



1 Misprinted (h) on the map (fig. 1, p. 486) north-west of the word Long in 

 'Long Hanborough.' 



2 A fragment of an ammonite has been obtained from this bed ; from the 

 description given to me I have little doubt that it is Clydoniceras discus. 



3 ' Jurassic Eocks of Britain' Mem. Geol. Surv. vol. iv (1894) pp. 447, 373, 

 374, & 320. 



