Inoceramids and biostratigraphy at the Turonian/Coniacian boundary; based on the Salzgitter-Salder Quarry, Lower Saxony, Germany, and the SΠupia Nadbrze˝na section, Central Poland
Inoceramids and biostratigraphy at the Turonian/Coniacian boundary; based on the Salzgitter-Salder Quarry, Lower Saxony, Germany, and the SΠupia Nadbrze˝na section, Central Poland
复制标题
Turonian/Coniacian 边界的 Inoceramids 和生物地层学；基于德国下萨克森州的 Salzgitter-Salder 采石场和波兰中部的 SΠupia Nadbrze˝na 剖面
DOI：
--
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
C. Wood
中科院分区：
文献类型：
--
作者：
I. Walaszczyk;C. Wood
候选全球标准层型剖面和科尼亚阶底部的点、德国的Salzgitter-Salder剖面和波兰中部的S upia Nadbrzezna剖面共同提供了土伦/科尼亚阶边界区间内的inoceramid演替和事件的连续记录，可在整个欧洲及其他地区进行相关。Turonian/Coniacian界线间隔标志着从Turonian上部的Mytiloides / Inoceramus为主的动物群到Turonian最顶部和Coniacian下部的Cremnoceramus为主的动物群的根本变化。Cremnoceramus分支基本上由三个谱系组成：waltersdorfensis，具有亚种waltersdorfensis（ANDERT）和hannovrensis（海因茨）; deformis，具有亚种erectus（MEEK），dobrogensis（SZASZ）和deformis（MEEK）;和crassus，具有亚种inconstans（WOODS）和crassus（PETRASCHECK）。稀有Inoceramus物种范围在整个边界区间，并在中部下Coniacian代表属Tethyoceramus索尔奈（非海因茨）出现。描述了这些属的12个种和/或亚种，并附有插图。该inoceramids提供了划分的最高Turonian-Lower Coniacian边界区间为7 inoceramid带的基础。上土龙统上部划分为Mytiloides scupini带和Cremnoceramus waltersdorfensis带。在下科尼亚阶中，可区分出以下带，按自下而上的顺序：Cremnoceramus deformis erectus，C. waltersdorfensishannovrensis、粗毛Cremnoceramuscrassusinconstans、粗毛Cremnoceramuscrassus + C.变形变形和Inoceramus gibbosus。提出的Coniacian基部的inoceramid标记，以前称为Cremnoceramus rotundatus（感觉TROGER non FIEGE）是Cremnoceramus erectus（MEEK）的同义词，它的首次出现标志着变形直立带的基部和Coniacian阶段的基部。Salzgitter-Salder剖面，尽管存在一些关于边界处可能的间断或冷凝的问题，但代表了Turonian/Coniacian边界的最佳潜在层型。
The candidate Global Standard Stratotype-section and Point for the base of the Coniacian Stage, the Salzgitter-Salder section, Germany, and the SΠupia Nadbrzezna section, central Poland, provide together a continuous record of the inoceramid succession and events across the Turonian/Coniacian boundary interval, that can be correlated throughout Europe and beyond. The Turonian/Coniacian boundary interval marks a radical change from the Upper Turonian, Mytiloides / Inoceramus -dominated fauna to the Cremnoceramus -dominated fauna of the topmost Turonian and Lower Coniacian. The Cremnoceramus clade is basically composed of three lineages: waltersdorfensis, with subspecies waltersdorfensis (ANDERT) and hannovrensis (HEINZ); deformis , with subspecies erectus (MEEK), dobrogensis (SZASZ) and deformis (MEEK); and crassus , with subspecies inconstans (WOODS) and crassus (PETRASCHECK). Rare Inoceramus species range throughout the boundary interval, and in the middle Lower Coniacian representatives of the genus Tethyoceramus SORNAY (non HEINZ) appear. Twelve species and/or subspecies of these genera are described and illustrated. The inoceramids provide the basis for the subdivision of the uppermost Turonian – Lower Coniacian boundary interval into 7 inoceramid zones. The upper Upper Turonian is divided into the Mytiloides scupini Zone and the Cremnoceramus waltersdorfensis Zone. In the Lower Coniacian the following zones are distinguished, in ascending order: Cremnoceramus deformis erectus , C. waltersdorfensis hannovrensis , Cremnoceramus crassus inconstans , Cremnoceramus crassus + C. deformis deformis and Inoceramus gibbosus . The inoceramid marker proposed for the base of the Coniacian, formerly referred to as Cremnoceramus rotundatus (sensu TROGER non FIEGE) is a synonym of Cremnoceramus erectus (MEEK), and its first appearance marks the base of the deformis erectus Zone and the base of the Coniacian Stage. The Salzgitter-Salder section, despite some problems concerning a possible hiatus or condensation at the boundary represents the best available potential stratotype for the Turonian/Coniacian boundary.