L. Richardson — WicbUc Rocks of Warwickshire. 31 



It is interesting to find this clay thus far south in immediate contact 

 Avith the White Lias, for I think there is no doubt that the deposits 

 are non-sequentially related, that the Insect and associated beds, to 

 say the least, are absent from in between. 



Abundant evidence of the White Lias is to be obtained in certain 

 of the railway-cuttings between Ettington and Kineton, along with 

 the underlying Upper-Rhajtic greenish-grey marls, in which, in the 

 cutting nearest the Kiver Dene, Brodie discovered the Mstheria-Hei^ . 

 In the same cutting he noticed the Fien'a-contortaShales below, and 

 in that near Butler's Marston the J^sfheria-Bed and greenish-grey 

 marls and 



' ' about twenty feet of black shale ... at the west end of the cutting overlain 

 by drift. Further on, beyond the ridge nearest to Kineton, these black shales 

 {Avicula contorta zone) may be traced, having included fragmentary pieces of 

 yellow micaceous sandstone, the Pullastra arenicola bed . . . The White Lias 

 is again exposed in the section beyond, broken up on the top, underlain by the 

 ' Esther ia-\)eA. ' " . 



The White Lias has been extensively worked in the past at Sitch 

 Field, on the outlying Barn Hill, while there are two quarries at 

 present in work near Chesterton Church. In the neighbourhood of 

 Chesterton Windmill are numerous small openings in the White Lias, 

 but the best is that situated a quarter of a mile to the north of the 

 windmill. 



The quarry referred to is on a line of fault and the beds are much 

 disturbed. At the top are the tough blue Lias clays, then the rusty 

 layer, followed by 6 to 8 feet of White Lias, and lowermost some 

 greenish-grey marls (Cotham Beds). The surfaces of most of the 

 limestone-beds are waterworn, some are bored by annelids, and many 

 have specimens of Dimyodon adhering. 



Harbuky. — At Harbury the Rhaetic escarpment is traversed by 

 a deep railway-cutting. The only rock well exposed is the White Lias. 



The Red Keuper Marls are seen in the brook-sides near the level- 

 crossing at the western end of the cutting ; the Tea-green Marls 

 succeed and are followed by the Fierm-contorta-i^hales, which, however, 

 are only seen in the form of material worked out by the rabbits. The 

 greenish-grey marls of the Cotham Beds are similarly exposed, and, 

 for them, are of considerable thickness. The White Lias is very 

 conspicuous and forms an inclined bench on both sides of the cutting. 

 The upper beds, as usual in Warwickshire, are more massive than the 

 lower. The top-layer has a waterworn surface, is iron-stained and 

 crowded with fossils, particularly with specimens of Isocyprina. 



Other fossils from the White Lias here are Dimijodon iiiUissiriatiis, 

 Plagiostoma valoniense, Pleuromya crowcombeia auctt., Pseudomonotis, 

 Plicaiula cf. cloacina, Vaughan, Volsella minima, Mooi'e 7ion Sow., 

 Montlivaltia tomesi, Pseudopedina tomesi, and Ostracoda. 



The tough blue clays of the type common to the base of the Lower 

 Lias in this part of Warwickshire succeed and are followed by the 

 Angulatus-Beds, which are rich in pyritized specimens of Schlotheimia. 

 ISTo indications of the Ostrea- and Insect Beds have been observed, and 

 the Plano7'iis-Beds, if present, are represented by clay or shales. 



Mr. H. B. Woodward has briefly noticed this section; but the 



