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Recovery of Ordovician conodonts by hydrochloric acid from phosphate nodules reworked into the Sulphur Springs Formation (Devonian) in Missouri, U.S.A.

Published online by Cambridge University Press:  01 May 2009

K. M. Chauff
K. M. Chauff
Affiliation:
Department of Geology, University of Iowa, Iowa City, Iowa, U.S.A. 52242
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Summary

The Glen Park Member of the Sulphur Springs Formation (Devonian) in east-central Missouri contains abundant phosphate nodules. Dissolution of several nodules in hydrochloric acid yielded a diverse, well-preserved Ordovician fauna, containing diagnostic graptolites, ostracodes and conodonts, demonstrating that the Glen Park phosphate nodules are reworked from the Ordovician. Faunal similarities and the in situ occurrence of phosphorite in nearby exposures of the Mequoketa Shale (Ordovician ) strongly suggest hat phosphate nodules in the Glen Park were reworked from the Maquoketa.

Type
Articles
Information
Geological Magazine , Volume 115 , Issue 3 , May 1978 , pp. 205 - 209
Copyright
Copyright © Cambridge University Press 1978

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References

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