Westernmost Tethyan/proto-Atlantic neritic archives of Early Aptian environmental change

最西端的特提斯/原大西洋浅海区早期阿普第期环境变化档案

• 批准号: 267244314
• 负责人: Professor Dr. Adrian Immenhauser
• 金额: --
• 依托单位: Institut für Geologie, Mineralogie und Geophysik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/267244314?language=en
• 关键词: Westernmost; Tethyan; proto; Atlantic; neritic

Here I propose a project with focus on the Lower Aptian epeiric-neritic successions of Central Mexico (Palaeo-Gulf of Mexico). This research is motivated by significant recent advances in neritic carbonate research with specific focus on the response of Lower Aptian shoalwater systems to OAE1a-related global perturbations. Previous studies, however, are systematically biased towards the European Tethys and a limited number of papers with focus on the eastern margin of the proto-North Atlantic. These regional limitations represent a significant obstacle in neritic OAE1a research. To the knowledge of the author, a recent, systematic assessment of the Lower Aptian units in Central Mexico that cover the OAE1a time interval is lacking. This knowledge gap is significant as the Palaeo-Gulf of Mexico holds a highly strategic position between the Atlantic and the Pacific domain. Here, it is suggested that the initial focus is on the Aptian San Juan Raya in Central Mexico but expanding this work to Aptian units in northern Mexico (Cupido Fm) is a seriously considered option. Moreover, depending on the results obtained, the expansion of the study window into e.g., Albian units must be discussed. The project is heavily depending on Prof. G. Barrera (UNAM, Mexico City), an expert on the palaeo-ecology of the Cretaceous of Mexico. By combining detailed field geology, state-of-the-art chemostratigraphy and palaeontology as well as palaeo-ecology, an in-depth assessment of Early Aptian global change in a strongly continental, mixed carbonate-clastic succession is aimed at. If successful, this work will significantly improve our view of epeiric-neritic OAE1a research in New World sections and act as template for similar projects elsewhere.

在这里，我提出了一个项目，重点关注墨西哥中部（墨西哥古湾）的下阿普第阶浅海层序。这项研究的动机是浅海碳酸盐研究的重大进展，特别关注下阿普第浅水系统对 OAE1a 相关的全球扰动的响应。然而，之前的研究系统地偏向于欧洲特提斯洋，并且有少数论文关注于原北大西洋的东缘。这些区域限制是浅海 OAE1a 研究的重大障碍。据作者所知，最近缺乏对墨西哥中部下阿普第阶单位覆盖 OAE1a 时间间隔的系统评估。由于墨西哥古湾在大西洋和太平洋领域之间占据着高度战略地位，因此这种知识差距是巨大的。这里，建议最初的重点是墨西哥中部的 Aptian San Juan Raya，但将这项工作扩展到墨西哥北部的 Aptian 单位（Cupido Fm）是一个经过认真考虑的选择。此外，根据所获得的结果，必须讨论将研究窗口扩展到例如阿尔布单位。该项目在很大程度上依赖于 G. Barrera 教授（墨西哥城墨西哥国立自治大学），他是墨西哥白垩纪古生态学专家。通过结合详细的野外地质学、最先进的化学地层学和古生物学以及古生态学，旨在深入评估强大陆性、混合碳酸盐岩-碎屑岩演替中的早阿普第阶全球变化。如果成功，这项工作将显着改善我们对新世界剖面浅海 OAE1a 研究的看法，并作为其他地方类似项目的模板。