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II.—On the Microscopic Structure of the Jurassic Pisolite

Published online by Cambridge University Press:  01 May 2009

E. Wethered
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Extract

The specimens of pisolite which I have examined were obtained from two horizons, namely, the Coralline Oolite and base of the Inferior Oolite near Cheltenham. The pisolites are well known and have frequently been referred to by authors as fine types of oolitic granules, and in proof of this I may quote from Mr. H. B. Woodward's last edition of his Geology of England and Wales. Speaking of oolite granules the author says (p. 281), “ When these particles approach the size of a pea or bean, the rock is termed Pisolite, Pisolitic Limestone, or Pea-grit.”

Type
Original Articles
Information
Geological Magazine , Volume 6 , Issue 5 , May 1889 , pp. 196 - 200
Copyright
Copyright © Cambridge University Press 1889

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References

page 197 note 1 Quart. Journ. Geol. Soc. vol. xxxiii. p. 265.Google Scholar

page 197 note 2 Loc. cit. p. 276.

page 198 note 1 Quart. Journ. Geol. Soc. vol. xvi. p. 7, 1860.Google Scholar

page 198 note 2 I use the term spherule for the pisolites and granule for the ordinary oolitic forms.

page 199 note 1 Mon. Sil. Foss. Girvan, pp. 22–3. pl. ix.

page 199 note 2 Geol. Mag. N.S. Dec. III. Vol. V. p. 22, 1888.Google Scholar