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IV.—On the Mineralogical Constitution of Calcareous Organisms1

Published online by Cambridge University Press:  01 May 2009

Vaughan Cornish  and
Percy F. Kendall
Percy F. Kendall
Affiliation:
Berkeley Fellow of the Owens College
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Extract

In Mr. Sorby's presidential address at the anniversary meeting of the Geological Society in 1879, attention was drawn to the fact that the carbonate of lime in calcareous organisms is in certain cases in the form of calcite, in others of aragonite, and various genera of such organisms were classed according to their mineralogical constitution. It was also shown that aragonite fossils are of greatly inferior stability to those formed of calcite, in many deposits casts only of aragonite fossils being preserved, whilst those of calcite remain unaltered. In the same address Mr. Sorby insisted on the importance of this difference of stability as affecting the trustworthiness of the geological record.

Type
Original Articles
Information
Geological Magazine , Volume 5 , Issue 2 , February 1888 , pp. 66 - 73
Copyright
Copyright © Cambridge University Press 1888

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References

1 An Abstract of this paper was read before Section C. of the British Association at Manchester, September, 1887.