News Release 21-May-2018 奥陶纪晚期大灭绝的海洋缺氧 Peer-Reviewed Publication Proceedings of the National Academy of Sciences image: Stripes along seafloor represent layers of Ordovician limestone exposed at low tide on Anticosti Island. view more Credit: PNAS 为了研究奥陶纪晚期大灭绝(LOME)的起源——这可能部分是由于海洋缺氧引发的——科研人员使用来自奥陶纪晚期-志留纪早期海洋石灰岩的铀同位素,对全球海洋氧条件进行了建模,他们报告说,一场突然出现但是持续时间长的全球海洋缺氧事件恰逢奥陶纪晚期大灭绝(LOME)的出现,并且持续到奥陶纪晚期冰期的峰值以及志留纪早期冰川消退,这组作者说,这提示全球变冷可能在驱动奥陶纪晚期大灭绝(LOME)期间的海洋缺氧方面起到了一个作用。 ### Journal Proceedings of the National Academy of Sciences Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.