LIOCERAS OPALINUM. 43 



V. Generalised Section of the Escarpment of Hares field Hill (six miles due south 



of Gloucester.) 



Ft. In. 

 Pea- Grit "\ E 1. Bubbly, whitish limestone with numerous flattened and irregular-shaped 

 oenes ot f pisolitic grains. Ehynchonella subangulata, Dav., Rh. ooHtica, Dav. 



hampton. J (abundant), Terebratula sub-maxillata, Dav., Tereb. plicata, J. Buckm., 



Tereb. pisolitica, S. Buckm. . . . . .50 



Lower "S D" 2. Several beds of limestone, varying in colour from white to pale brown, 

 -Limestone I w ^ nume rous very fine, round, oolite grains; discoloured in places 



Witcheil J w ^^ ^ ^or) • Sometimes containing, especially towards the upper part, 



fragments of shells and some coarser grains. Worked for rough 

 masonry. At the base, but not separable, is an extremely shelly bed, 

 about one foot thick, with numerous fragments of shells, Pentacrinites, 

 Oysters, Polyzoa, spines of Cidaris, &c. . . . about 25 



3. Dark brown sandy bed with some grey pebbles occasionally embedded . 3 



4. Blocks of limestone similar to No. 2, if anything somewhat finer in 



texture ; discoloured a good deal with iron ; containing sometimes 

 small fragments of shells, and small, brown, irregular-shaped, decom- 

 posed grains. Bored in places by Annelids. Worked for rough 

 masonry ....... 



5. Grey limestone with some few irregular grains ; not generally worked 



6. Hard grey limestone with no oolite grains •} a few iron stains . 



7. Soft, brown, gritty, sandy bed, without any oolite grains 

 Ferruginous") D' 8. 2 Compact grey limestone with coarse oolite grains, which are absent in 



Beds > the upper part ; very little stained with iron 



^ c '' ' 9. Similar bed with somewhat finer grains, and rather more stained 



10. Grey limestone with numerous brown grains, and many ferruginous 



patches. Much broken up, readily disintegrated by weather, and 

 very brown when exposed. Lioceras ambiguum ? poorly preserved 



11. Grey limestone with numerous irregular-shaped grains 



12. Grey limestone with numerous light grains and ferruginous patches 



13. Eubbly parting ...... 



14. Grey limestone with numerous ferruginous patches and somewhat coarse 



grains . . . . . . .15 



Opalinum') C" 15. Very hard limestone, varying in colour from a light greyish-yellow to a 

 zone * ■* dark brown, with almost an approach to chestnut, containing very 



numerous and very small dark-brown grains. This stone is generally 

 browner in patches where the fossils occur. Its generally rich colour 

 gives it a totally different appearance to any of the other beds above or 

 below. Lioceras opalinum abundant and of large size ; Lioc. comptum . 1 



1 That is, to the naked eye in this and other cases. 



2 Beds 8 — 14 are all very similar in character, and probably scarcely separable except that some 

 are more readily decomposed by weather. When freshly broken up they are of an iron-grey colour, 

 but soon became very brown on exposure, and hence when weathered are quite different in appearance 

 from those above them. These beds contain grains of mica. 



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3 







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2 







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1 







1 



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