The Eocene-Oligocene transition in the southwestern Neotethys (Tunisia): astronomical calibration and paleoenvironmental changes@en

Based on an integrated approach, we present the results of an original study on the late Eocene-early Oligocene interval carried out in the southwestern Neotethys margin (northeastern Tunisia). For magnetic susceptibility analysis, a total of 427 samples were collected every ~0.06 m and were measured, at the sediment dynamics and environment laboratory, the national school of engineers of Sfax (Sfax, Tunisia), for low-frequency mass specific magnetic susceptibility using a Bartington MS2 magnetometer (sensitivity of 2×10−6 m3/kg). […]本研究采用综合研究方法，报道了在新特提斯洋西南缘（southwestern Neotethys margin，突尼斯东北部）开展的始新世晚期-渐新世早期（late Eocene-early Oligocene）地层原创研究成果。针对磁化率分析（magnetic susceptibility analysis），研究团队以约0.06米的采样间距共采集427件样品，并于突尼斯斯法克斯国立工程师学院（national school of engineers of Sfax）的沉积动力学与环境实验室（sediment dynamics and environment laboratory），使用Bartington MS2型磁化率仪（Bartington MS2 magnetometer，灵敏度为2×10^−6 m³/kg）完成了低频质量比磁化率（low-frequency mass specific magnetic susceptibility）测试。[…]