On the lower boundary of the Floian Stage in Estonia
The lower boundary of the Second Stage of the Lower Ordovician Series, the Floian Stage, is defined by the first appearance of the graptolite Tetragraptus approximatus. In the stratotype section of Diabasbrottet at Hunneberg, southern Sweden, the boundary falls within the Megistaspis planilimbata tr...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Estonian Academy Publishers
2012-11-01
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| Series: | Estonian Journal of Earth Sciences |
| Subjects: | |
| Online Access: | http://www.kirj.ee/public/Estonian_Journal_of_Earth_Sciences/2012/issue_4/earth-2012-4-205-209.pdf |