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，重点是墨西哥中部(古墨西哥湾)的下阿普提亚浅海-浅海序列。这项研究是由浅海碳酸盐研究的重大进展推动的，特别关注下阿普提亚浅滩系统对与OAE1a有关的全球扰动的响应。然而，以前的研究系统性地偏向于欧洲的特提斯，少数论文集中在原北大西洋的东部边缘。这些地区的限制是浅海OAE1a研究的一个重大障碍。据提交人所知，缺乏对墨西哥中部下阿普提安地区覆盖OAE1a时间间隔的最新系统评估。这一知识差距是巨大的，因为古墨西哥湾在大西洋和太平洋领域之间具有高度的战略地位。在这里，建议最初的重点是墨西哥中部的Aptian San Juan Raya，但将这项工作扩大到墨西哥北部的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比安单位。该项目在很大程度上依赖于墨西哥白垩纪古生态专家G.Barrera教授(墨西哥城大学)。通过结合详细的野外地质学、最新的化学地层学和古生物学以及古生态学，旨在深入评估强烈陆相混合碳酸盐-碎屑岩序列中阿普提斯早期的全球变化。如果成功，这项工作将极大地改善我们对新大陆地区陆相-浅海OAE1a研究的看法，并为其他地方的类似项目提供模板。