MR. H. B. WOODWARD Q-^ A WELL-SINKH^G AT SWINDON. 



289 



Oxford 



Clay. 



Hard and rather compact grey limestone, 

 shelly and oolitic in places, cavities lined 

 with calc-spar ; and calcareous grit, -with 

 clay between seams 



Sand and slightly calcareous clay, greyish- 

 brown oolitic sandy marl, and hard grey 

 marl with Ammonites 



Clay, with grey gritty and slightly micaceous 

 marl, at depth of 120 feet 



Hard clay 



Shaly clay (water-bearing), with slightly cal- 

 careous rock, at depth of 140 feet (? Sep- 

 tarium) 



Hard clay 



Clay, dry, with calcareous gritty rock at 

 depth of 145 feet, and soft grey shelly cal- 

 careous and sandy rock at 160 feet 



Clay 



Uneven layers of rock 



Clay, with Septarium, dense pale bluish-grey, 

 sparry, argillaceous limestone, at 155 feet 

 3 inches 



Eock (probably Septaria) 



Clay 



j Eock (probably Septaria) 



Clay, details not recorded "^ 



„ indurated shelly marl at depth of 226 j 

 „ ft. Septaria with Nautilus at depth of I 

 „ 434 ft. elongated Septaria with iron { 



pyrites at 456 feet | 



„ Septaria at 460 feet ) 



G-reenish-grey shelly clay with Septaria 



Clay 



Septaria 



Clay 



Sepraria (one specimen 5 feet in diameter 

 by 1 foot) 



Dark bituminous clay 



Septaria 



Clay 



Septaria 



Clay 



Dark clay, full of small bivalves 



Grey clay with shells 



Very dense clay, entirely free from fossils . . . 



Hard light grey shelly clay 



Laminated clay 



Dark laminated greenish-grey clay, with few 

 fossils 



Septaria 



Clay 



Greenish-grey clay, shelly in places 



Dark grey clay, shelly in places 



Grey and brown laminated shelly clay 



Septaria, shelly, and containing lignite 



Dark greenish-grey laminated shelly clay ... 



Greenish-grey gritty marl with bivalves 



Greenish-grey shelly clay 



Sandy clay, with few fossils 



Thickne 

 ft. in. 



5 10 



8 5 



20 6 

 4 



3 6 

 3 



8 10 

 1 6 

 6 



2 6 



8 



4 



8 



420 10 



6 



2 



4 



4 



2 11 

 4 



3 6 



6 



1 2 

 3 10 

 8 



Depth, 

 ft. in. 



103 9 



112 2 



132 8 

 136 8 



140 2 

 143 2 



152 



153 6 



154 



156 6 



157 2 



157 6 



158 2 



579 



679 6 



581 6 

 681 10 



582 2 



582 5 

 683 

 683 3 



583 8 

 683 10 



686 9 



687 1 

 691 9 

 595 

 600 

 604 3 



607 9 



608 3 



609 5 

 613 3 



621 3 



622 9 



623 3 

 629 7 



630 2 



631 7 

 631 10 



