Belemnites were a type of cephalopod abundant in the Jurassic and Cretaceous, whose fossils have been extensively used for paleo-oceanographic studies. For this study, we analyzed 69 elements by Inductively Coupled Plasma-Sector Field Mass Spectrometry (ICP-SFMS) in 15 belemnite rostra from the West Rodiles section in the Asturian Basin, Northern Spain. We aim to determine if belemnite rostra carbonate chemistry reflects changes in seawater chemistry during the Late Pliensbachian–Early Toarcian time interval and examine how belemnites can be used to trace known drivers of the Early Toarcian Oceanic Anoxic Event (T-OAE) and associated oceanographic processes.

中文翻译：

---

基于箭石喙部元素含量对普林斯巴阶晚期-托阿尔阶早期海水化学的新认识


箭石是侏罗纪和白垩纪丰富的一种头足类动物，其化石已广泛用于古海洋学研究。在这项研究中，我们通过电感耦合等离子体扇形场质谱 (ICP-SFMS) 分析了来自西班牙北部阿斯图里亚斯盆地西罗迪莱斯剖面的 15 个箭石岩台中的 69 种元素。我们的目的是确定箭石的碳酸盐化学成分是否反映了晚普林斯巴赫世 - 早托阿尔世时间间隔期间海水化学的变化，并研究如何使用箭石来追踪早托阿尔世海洋缺氧事件（T-OAE）和相关海洋学过程的已知驱动因素。