Zhao Xiangdong, Xue Naihua, Yang Hu, Zheng Daran, Peng Jungang, Frieling Joost, De Vleeschouwer David, Fu Xuewu, Jia Wanglu, Fang Yanan, Li Sha, Wang Meng, Zhao Xianye, Wang Qiang, Zhang Haichun, Sha Jingeng, Jenkyns Hugh C, Claeys Philippe, Wang Bo
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China.
Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, China.
Nat Commun. 2025 Jun 30;16(1):5404. doi: 10.1038/s41467-025-61262-7.
The Carnian Pluvial Episode (CPE; 234-232 million years ago) is an iconic but poorly understood hyperthermal event. Here, we present an integrated high-resolution (2-10 kyr) multi-proxy record from a Carnian lacustrine succession of the Junggar Basin of northwestern China. We find that the rapid CPE onset (15.8 kyr) could have been the result of volcanism and subsequent surface carbon-cycle feedbacks. The CPE terrestrial carbon cycling, at a scale of ± 1‰ (δC), displays an in-phase relationship with the 405-kyr-long-eccentricity parameter, paralleling the warmhouse climate-carbon-cycle interactions throughout the Oligo-Miocene. The CPE hydrological cycle was typified by increased aridification in continental interiors and multiple precipitation centres at low-latitude eastern regions of Pangea and at the poles. The carbon and hydrological cycle changes of the CPE include features reminiscent of other warm events, suggesting they may share key characteristics and hold important clues to Earth system functioning.
卡尼期洪积事件（CPE；2.34 - 2.32亿年前）是一个具有标志性但却鲜为人知的高温事件。在此，我们展示了来自中国西北准噶尔盆地卡尼期湖相层序的高分辨率（约2 - 10千年）多指标综合记录。我们发现，卡尼期洪积事件的快速开始（约15.8千年）可能是火山活动及随后的地表碳循环反馈作用的结果。卡尼期洪积事件陆地碳循环在±1‰（δC）尺度上与40.5万年的偏心率参数呈现同相位关系，这与整个渐新世 - 中新世温室气候 - 碳循环相互作用相似。卡尼期洪积事件的水文循环特征是大陆内部干旱化加剧，在泛大陆低纬度东部地区和两极出现多个降水中心。卡尼期洪积事件的碳和水文循环变化具有其他温暖事件的特征，这表明它们可能具有共同的关键特征，并为地球系统功能提供重要线索。
