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

在这里，我提出了一个项目，重点关注墨西哥中部（古墨西哥湾）的下阿普提亚经验-浅海演替。本研究的动机是近期浅海碳酸盐研究的重大进展，特别关注下阿普tian浅水系统对oae1a相关全球扰动的响应。然而，先前的研究系统地偏向于欧洲的特提斯，并且有限的论文集中在原北大西洋的东部边缘。这些区域限制是浅海OAE1a研究的一个重大障碍。据作者所知，最近缺乏对墨西哥中部覆盖OAE1a时间间隔的下阿普提亚单元的系统评估。由于古墨西哥湾在大西洋和太平洋地区之间具有高度的战略地位，因此这种知识差距非常重要。在这里，建议最初的重点是墨西哥中部的Aptian San Juan Raya，但将这项工作扩展到墨西哥北部的Aptian单元（Cupido Fm）是一个认真考虑的选择。此外，根据所获得的结果，必须讨论将研究窗口扩展到例如Albian单位。该项目在很大程度上依赖于G. Barrera教授（墨西哥国立自治大学墨西哥城分校），他是墨西哥白垩纪古生态学专家。结合详细的野外地质、最先进的化学地层学和古生物学以及古生态学，深入评估阿普tian早期全球变化在一个强烈的大陆，混合碳酸盐岩-碎屑演替的目的。如果成功，这项工作将大大改善我们对新世界部分经验-浅层OAE1a研究的看法，并作为其他类似项目的模板。

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.