侏罗纪/白垩纪过渡时期的气候变化与超区域海洋过程：来自法国东南部沃肯盆地（Clue de Taulanne剖面）的见解

IF 4 1区地球科学 Q1 GEOGRAPHY, PHYSICAL

Global and Planetary Change Pub Date : 2025-04-25 DOI:10.1016/j.gloplacha.2025.104836

Damian Gerard Lodowski , Johann Schnyder , Justyna Kowal-Kasprzyk , Jean-François Deconinck , Mathieu Martinez , Andrzej Chmielewski , Izabela Ploch , Jacek Grabowski

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引用次数: 0

摘要

本文介绍了在法国东南部沃肯盆地（vocontan Basin）的上梯统—下瓦兰吉尼亚（Valanginian）沉积中进行的详细地层标定和古环境研究的结果，并特别关注了Clue de Taulanne剖面。结合calpionellid生物地层学、磁地层学和δ13C地层学，并辅以区域对比，可以对侏罗纪晚期-白垩纪早期的气候和海洋扰动进行精确测年。这些都是根据沉积学（微相分析，粘土矿物学）和地球化学（元素地球化学，TOC）调查来确定的。本研究证实了泰索尼亚晚期-早Berriasian亚带（Tintinnopsella remanei - Calpionella elliptica中期亚带）是一个气候干燥、微量元素富集的时期。此外，上梯统（Remanei/ massutinana亚带过渡）记录了一个重要的古生态转换，即Saccocoma的消失和放射虫为主的微相向calpionellia为主的微相转变。在早/晚贝里亚过渡时期，随后向湿润古气候条件的转变相对较快（~ 0.5 Ma），在中椭圆亚带(中M17r磁带；最新的早期Berriasian)。重要的是，这一重大气候变化与较低的营养类型元素埋藏有关。收集的数据不仅证明了侏罗纪晚期-白垩纪早期气候与海洋过程之间的关系，而且记录了生物对这些扰动的反应。沃肯盆地不同沉积带（Clue de Taulanne、Berrias、Montclus和tr Maroua剖面）之间的相关性证明了上述发现的区域意义，而与其他阿尔卑斯大西洋序列（Transdanubian Range和斯洛文尼亚盆地）的比较则提供了超区域背景。

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Climate changes at the Jurassic/Cretaceous transition vs. supra-regional oceanographic processes: Insights from the Vocontian Basin (Clue de Taulanne section, SE France)

Herein are presented the results of a detailed stratigraphic calibration and palaeoenvironmental studies performed in the upper Tithonian–lowermost Valanginian deposits of the Vocontian Basin (SE France), with special attention being paid to the Clue de Taulanne section. Integration of calpionellid biostratigraphy, magnetostratigraphy and δ¹³C stratigraphy, supplemented with regional correlations, enables precise dating of the latest Jurassic–earliest Cretaceous climate and oceanographic perturbations. These are recognized based on sedimentologic (microfacies analyses, clay mineralogy) and geochemical (elemental geochemistry, TOC) investigations. This research confirms that the latest Tithonian–early Berriasian (Tintinnopsella remanei–mid Calpionella elliptica subzones) was marked by a phase of dry climate and elevated burial of micronutrients. Furthermore, the uppermost Tithonian (Remanei/Massutiniana subzonal transition) documents an important palaeoecologic turnover, that is the disappearance of Saccocoma and a switch from radiolarian- to calpionellid-dominated microfacies. The subsequent shift towards humid palaeoclimate conditions at the early/late Berriasian transition was relatively rapid (∼ 0.5 Ma), as evidenced by a significant increase in kaolinite proportion within the mid-Elliptica Subzone (mid M17r magnetozone; latest early Berriasian). Importantly, this major climate change was associated with lowered burial of nutrient-type elements, relative to lithogenic fraction. Collected data not only evidence the relation between the latest Jurassic–earliest Cretaceous climate and oceanographic processes, but also document biotic response to these perturbations. The regional significance of the above findings is evidenced by correlations between different sedimentary zones of the Vocontian Basin (Clue de Taulanne, Berrias, Montclus and Tré Maroua sections), while supra-regional context is provided by comparison with other Alpine Atlantic successions: Transdanubian Range and the Slovenian Basin.

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来源期刊

Global and Planetary Change 地学天文-地球科学综合

CiteScore

7.40

自引率

10.30%

发文量

226

审稿时长

63 days

期刊介绍： The objective of the journal Global and Planetary Change is to provide a multi-disciplinary overview of the processes taking place in the Earth System and involved in planetary change over time. The journal focuses on records of the past and current state of the earth system, and future scenarios , and their link to global environmental change. Regional or process-oriented studies are welcome if they discuss global implications. Topics include, but are not limited to, changes in the dynamics and composition of the atmosphere, oceans and cryosphere, as well as climate change, sea level variation, observations/modelling of Earth processes from deep to (near-)surface and their coupling, global ecology, biogeography and the resilience/thresholds in ecosystems. Key criteria for the consideration of manuscripts are (a) the relevance for the global scientific community and/or (b) the wider implications for global scale problems, preferably combined with (c) having a significance beyond a single discipline. A clear focus on key processes associated with planetary scale change is strongly encouraged. Manuscripts can be submitted as either research contributions or as a review article. Every effort should be made towards the presentation of research outcomes in an understandable way for a broad readership.