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Preliminary report on the age and palynology of the Bear Gulch Limestone (Mississippian, Montana)

Published online by Cambridge University Press:  14 July 2015

Robt S. Cox
Robt S. Cox*
Affiliation:
Department of Geosciences, The Pennsylvania State University, University Park 16802
*
1Current Address: Museum of Paleontology, The University of Michigan, Ann Arbor 48109
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Abstract

Palynostratigraphic study of the Bear Gulch Member of the Heath Formation, central Montana, indicates an Upper Mississippian age for the deposit corresponding to Carboniferous palynofloral zone TK (ammonoid zone E2b, Namurian A). The palynoflora contains a diverse spore assemblage, including the Mississippian index Tripartites vetustus. In addition, the Bear Gulch Member contains an abundant and diverse acritarch assemblage. The age assignment is consistent with age determinations from studies of the ammonoid, conodont, and bryozoan faunas.

Type
Research Article
Information
Journal of Paleontology , Volume 60 , Issue 4 , July 1986 , pp. 952 - 956
Copyright
Copyright © The Paleontological Society 

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References

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