Palaeo-ecology of the OAE 2 (Cenomanian-Turonian) and OAE 3 (Coniacian-Santonian) at Tarfaya, NW Africa, as reflected by marine palynology.

对非洲西北部Tarfaya上白垩统5个岩心剖面提供的关键地层单位进行孢粉学分析，重点是有机壁藻孢囊（甲藻孢囊、prasinophytes、疑源类）。S75岩芯覆盖了Cenomanian/Turonian边界事件本身（CTBE，Oceanic Anomanian Event 2）直到下Turonian。摩洛哥多学科项目大西洋边缘综合盆地分析的四个新岩心将于2009年底获得，用于恢复OAE 2（Cenomanian/Turonian）至OAE 3（Coniacian/Santonian）。不同藻类类群和孢粉学指标对OAE 2和OAE 3动态的响应分别被考虑，并与独立的古环境指标进行比较。一个主要的重点将是对潜在的缺氧在透光带沃茨（生物标志物）的prasinophyte绿色藻类的反应。将特别注意两个事件的古生态边界条件的比较。这种方法是通过将孢粉学数据与多学科数据集（包括微体古生物学、地球化学和沉积学）相结合来提供的，这些数据集已经可用于S 75岩心，并将从多学科项目中为新岩心提供。将孢粉学结果与独立代用资料进行对比，将大大提高对海洋孢粉学古生态潜力和海洋声发射起源与演化动力学的认识。

Critical stratigraphic units provided by 5 core sections from the Upper Cretaceous of Tarfaya, NW Africa, are to be analysed palynologically, with emphasis on organic-walled algae cysts (dinoflagellate cysts, prasinophytes, acritarchs). Core S 75 covers the Cenomanian/Turonian boundary Event proper (CTBE, Oceanic Anoxic Event 2) up into the Lower Turonian. Four new cores from the multidisciplinary project Atlantic Margin Integrated Basin Analysis, Morocco , available in late 2009, are to recover the OAE 2 (Cenomanian/Turonian) up to the OAE 3 (Coniacian/Santonian). The response of the various algal groups and palynologic proxies to the dynamic of the OAE 2 and OAE 3 respectively are to be considered and compared with independent palaeo-environmental proxies. A main focus will be on the response of prasinophyte green algae to potential oxygen deficiency in photic zone waters (biomarker). Special attention will be given to the comparison of palaeo-ecologic boundary conditions of the two events. This approach is provided by the integration of palynologic data with multidisciplinary data sets including micropalaeontology, geochemistry and sedimentology, which are available for core S 75 already and will be available from the multidisciplinary project for the new cores. The comparison of the palynologic results with independent proxy data will greatly enhance the knowledge on both, the palaeo-ecological potential of marine palynology as well as thedynamic of OAE origin and evolution.