The regional stratotype section and point for the base of the Hirnantian Stage (the uppermost Ordovician) at Mirny Creek, Omulev Mountains, Northeast Russia
A complete Hirnantian sequence comprising the Normalograptus extraordinarius and N. persculptus biozones is well developed at the Mirny Creek section in the Omulev Mountains. The underlying beds are assigned to the Appendispinograptus supernus Biozone, and in the overlying strata the lower boundar...
Main Authors: | Koren, Tatyana N., Sobolevskaya, Rimma F. |
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Format: | Article |
Language: | English |
Published: |
Estonian Academy Publishers
2008-03-01
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Series: | Estonian Journal of Earth Sciences |
Subjects: | |
Online Access: | http://eap.ee/public/Estonian_Journal_of_Earth_Sciences/2008/issue_1/earth-2008-1-1.pdf |
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