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A new biostratigraphic and biochronologic framework for Paleogene calcareous nannofossils

机译:古近纪钙质纳米化石的新生物地层学和生物年代学框架

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In 2014,we published a new calcareous nannofossil biozonation for the Paleogene period (Agnini et al., 2014). This scheme was conceived as the natural continuation of the revision of Cenozoic calcareous nannofossil biostratigraphy and biochronology that started with the publication of a new Neogene biozonation (Backman et al., 2012). The new scheme still partly relies on the biozonations of Martini (1971) and Okada & Bukry (1980), so it utilizes reliable biohorizons previously used by classical biozonal schemes, as well as new promising bioevents. To describe the semiquantitative abundance pattern of each biostratigraphically useful calcareous nannofossil taxon, we analyzed both DSDP/ODP sites and on-land sections located in the Atlantic and Pacific Oceans and Tethyan regions.
机译:2014年,我们发布了古近纪时期的一个新的石灰质纳米化石生物区带(Agnini等,2014)。该方案被认为是新生代钙质纳米化石生物地层学和生物年代学修订的自然延续,始于新新近纪生物带的发布(Backman等,2012)。新的计划仍然部分地依赖于Martini(1971)和Okada&Bukry(1980)的生物区划,因此它利用了以前经典的生物区划方案所使用的可靠生物地平线以及新的有前途的生物事件。为了描述每个生物地层学上有用的钙质纳米化石分类单元的半定量丰度模式,我们分析了DSDP / ODP站点以及位于大西洋,太平洋和特提斯地区的陆上剖面。

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