科研之友
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摘要
Nowadays carbon isotopes and bentonites have become new authorities in stratigraphy besides traditional biostratigraphy. Three positive carbon isotope excursions have been identified in the Upper Silurian of Podolia: the mid-Ludfordian excursion, the late Pidoli excursion at the Trubchyn/Dzvenygorod junction and the SIDE at the Silurian-Devonian boundary. Fourteen bentonite beds are known from this upper Ludlow-Pidoli interval. Some of these are better studied and are helpful for correlation of sections. Using the stage slices as a framework, we show that the Pidoli can be subdivided into natural stage rank units based on the integrated bio-, litho- and chemostratigraphy.
- 出版日期2014-1-2
- 单位中国地质博物馆
