| Autor: |
TOPRAK, FUNDA O. |
| Jazyk: |
angličtina |
| Rok vydání: |
2003 |
| Předmět: |
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| Druh dokumentu: |
Text |
| Popis: |
The Lower Silurian Osmundsberg K-bentonite is a widespread ash bed that occurs throughout Baltoscandia and parts of northern Europe. The sections containing the Osmundsberg K-bentonite beds were investigated to determine if chemical composition of these beds can be used as a basis for high-resolution chemostratigraphic correlation on a regional scale. Fifteen Osmundsberg K-bentonite samples and twenty-six samples of accompanying beds from twelve different localities were analyzed for major and trace elements and the data statistically treated using discriminant function analysis to determine if the trace element data provides a unique chemical fingerprint for the Osmundsberg K-bentonite beds. Comparison with the correlation model drawn by Bergstršm et al. (1998) based on biostratigraphic evidence show that results from two independent techniques are generally in agreement. Results demonstrate the unique and identifiable chemical fingerprint of the Osmundsberg K-bentonite bed can provide an additional stratigraphic tool for local and regional correlation of these K-bentonites. |
| Databáze: |
Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
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