Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-25T06:20:46.912Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access Rights & Permissions [Opens in a new window]

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Chauff, K. M. & Dombrowski, A. 1977 (in the press). Hemilistrona, a new conodont genus from the basal shale member of the Sulphur Springs Formation, east-central Missouri. Geol. et Palaeont. 11.Google Scholar
Ellison, S. P. 1944. The composition of conodonts. J. Paleont. 18, 133–40.Google Scholar
Hass, W. H. & Lindberg, M. L. 1946. Orientation of the crystal units of conodonts. J. Paleont. 20, 501–4.Google Scholar
Hatch, F. H. & Rastall, R. H. 1965. Petrology of the Sedimentary Rocks. Thomas Murby & Co., London.Google Scholar
Helms, J. 1961. Die Bedeutung der Conodonten für die Stratigraphie. Geologie 10, 973—95.Google Scholar
Koenig, J. W. 1961. Unassigned Devonian or Mississippian Formations. In Howe, W. B. & Koenig, J. W. (eds.). The stratigraphic succession in Missouri. Missouri Geol. Surv. and Water Res. (ser. 2)40, 41—9.Google Scholar
Lindström, M. 1964. Conodonts. Elsevier Pub. Co., Amsterdam, London, New York.Google Scholar
McConnell, D. 1973. Apatite. Springer-Verlag, New York, Vienna, p. 89.CrossRefGoogle Scholar
MehI, M. G. 1960. The relationship of the base of the Mississippian System in Missouri. J. Sci. Labs. Denison Univ. 45, 57–107.Google Scholar
Pietzner, H., Vahl, J. Werner, H. & Ziegler, W. 1968. Zur chemischen zusammensetzung und mikromorphologie der Conodonten. Palaeontographica Abt. A 128, 115–52.Google Scholar
Sweet, W. C., Thompson, T. L. & Satterfield, I. R. 1975. Conodont stratigraphy of Cape Limestone (Maysvillian) of eastern Missouri. Missouri Geol. Surv. Water Res. Rept. Inv. 57, 1–60.Google Scholar
Ulrich, E. O. 1904. In Buckley, E. R. & Buehler, H. A. The quarrying industry in Missouri. Missouri Bur. of Geol. and Mines (ser. 2) 22, 110.Google Scholar