Fluctuations of the oxygen minimum zone at the end of Oceanic Anoxic Event 2 in the Gulf of Mexico and the response of ammonites
Fluctuations of the oxygen minimum zone at the end of Oceanic Anoxic Event 2 in the Gulf of Mexico and the response of ammonites
复制标题
墨西哥湾第2次海洋缺氧事件结束时最低含氧区的波动及菊石的响应
DOI：
10.1007/s13358-015-0089-7
复制
发表时间：
2011
影响因子：
3
通讯作者：
Stinnesbeck
中科院分区：
文献类型：
--
作者：
Stinnesbeck
墨西哥瓦列西略的塞诺曼阶至中土龙阶底部（晚白垩世）剖面包含一个连续的、高度富泥质的沉积记录。它保留了从海洋缺氧事件（OAE）2恢复的远洋生态系统的详细见解。存款形成于这一时期的影响下扩大，但波动的氧气最小区，这也影响了动物。在本节中，菊石的丰度与inoceramids的丰度不相关;它们不仅排除了一种非理性的偏见，而且还表明菊石及其孵化的幼体比inoceramid幼虫和浮游有孔虫的水深更浅，与以前的模型形成对比。在Vallecillo，最丰富的物种，Pseudaspidoceras flexuosum，表现出对这些环境变化的反应。Pseudaspidoceras flexuosum显然居住在开放的水柱。它是第一个在OAE 2结束时重新出现的，可能已经适应了分层水体。在早期Turonian改善条件导致迁移P。flexuosuminto其他海洋和海洋。一个收缩的OMZ的阶段是移民和变化的阶段，在鹦鹉螺动物群在Vallecillo，而阶段的一个扩大的OMZ的停滞阶段。虽然菊石的丰度与大洋相对运动区的波动无关，但菊石的扩散和迁移与大洋相对运动区的波动有关。这项研究是基于物种的分析的复杂性的一个例子。
The latest Cenomanian to basal middle Turonian (Late Cretaceous) section at Vallecillo, Mexico, contains a continuous and highly fossiliferous sedimentary record. It preserves a detailed insight into a pelagic ecosystem that recovered from Oceanic Anoxic Event (OAE) 2. The deposit formed during this period under the influence of an expanded, but fluctuating oxygen minimum zone, which also affected the fauna. In this section, the abundances of ammonites do not correlate with those of inoceramids; they not only rule out a preservational bias but also indicate that ammonites and their hatchlings populated shallower water depths than inoceramid larvae and planktic foraminifers, contrasting previous models. The most abundant species at Vallecillo,Pseudaspidoceras flexuosum, shows a response to these environmental changes.Pseudaspidoceras flexuosumclearly inhabited the open water column. It is among the first to reappear at the end of OAE 2 and may have been adapted to the layered water body. The improving conditions during the early Turonian led to a migration ofP. flexuosuminto other seas and oceans. Phases of a contracted OMZ are phases of immigration and changes in the ammonite faunas at Vallecillo, whereas phases of an expanded OMZ are phases of stagnation. Although the abundance of ammonites is independent of fluctuations of the OMZ, their dispersal and migration are related to them. This study is an example for the complexity of species-based analyses.
登录
查看更多内容
古环境变化的形态变异——以白垩纪菊石为例
影响因子：
1.5
作者：
Lehmann;von Bargen;Engelke;Claßen
通讯作者：
Claßen
Pachyrhizodus caninus Cope, 1872（Teleostei，Crossognathiformes），产自巴列西洛（墨西哥）早期土伦阶
DOI：
10.1127/0077-7749/2010/0099
发表时间：
2010
影响因子：
0.8
作者：
Giersch;Stinnesbeck;Gonzalez-Gonzalez
通讯作者：
Gonzalez-Gonzalez
Schloenbachia varians 的表型可塑性和分类学 (J. Sowerby, 1817)（白垩纪 Ammonoidea）
DOI：
10.1007/s12542-010-0086-5
发表时间：
2011
期刊：
Paläontologische Zeitschrift
影响因子：
--
作者：
M. Wilmsen;Abdolmajid Mosavinia
通讯作者：
Abdolmajid Mosavinia
墨西哥晚白垩世板状石灰岩菊石上的生代蟋蟀
影响因子：
0.8
作者：
C. Ifrim;F. Vega;W. Stinnesbeck
通讯作者：
W. Stinnesbeck
Position de la limite Cénomanien-Turonien dans la Formation Bahloul de Tunisie Centrale: apports intégrés des ammonites et des isotopes ducarbone (δ13C)
DOI：
10.1007/s00015-005-1158-5
发表时间：
2005
期刊：
Eclogae Geologicae Helvetiae
影响因子：
--
作者：
F. Amédro;H. Accarie;F. Robaszynski
通讯作者：
F. Robaszynski