Integrated middle–upper Homerian (Silurian) stratigraphy of the Viduklė-61 well, Lithuania
| Autor: | Andrej Spiridonov, Sigitas Radzevičius, Antanas Brazauskas |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | GFF. 136:218-222 |
| ISSN: | 2000-0863 1103-5897 |
| DOI: | 10.1080/11035897.2013.866976 |
| Popis: | Integrated lithostratigraphical, cyclostratigraphical, graptolite and conodont biostratigraphical and chemostratigraphical (δ13C) data are presented from the upper Jaagarahu, Gėluva and Dubysa regional stages, including the lundgreni Event (middle Homerian) in the Viduklė-61 well, Lithuania. The Viduklė-61 well is located in the west of Lithuania in the deep-water facies zone. Because of its completeness, this section is the “keystone” for middle–upper Homerian stratigraphy that allows us to combine different kinds of data into a coherent picture of large-scale biotic and environmental turnover. Three formations are distinguished: the upper part of the Riga Formation, with the Ancia Member in the uppermost part, the Siesartis Formation and the lower part of Dubysa Formation. The Grotlingbo bentonite is in the upper part of Ancia Member. In the Gėluva regional stage, two 4th-order and six 5th-order cycles have been distinguished. In the studied interval of the Viduklė-61 core, the following graptolite bioz... |
| Databáze: | OpenAIRE |
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