Palynomorphs in the Northern High Latitude Cold Water Domain: A neogene stratigraphic and paleoenvironmental transect across the fram strait

尽管ODP第151和162航次以及IODP第302航次成功钻探了新近纪沉积物，但北方高纬度大西洋冷水域新近纪古环境演化几乎是未知的。从季节性冰覆盖的北欧海到常年冰覆盖的北冰洋，由站点907，909和M2 A组成的样带，将用于解开16和3 Ma之间的时期的古环境历史。新第三纪孢粉生物地层学（甲藻孢囊，疑源类和其他有机壁藻类）将建立和校准与磁性地层学，为现有的孔和未来的钻探活动在冰覆盖的地区提供参考地层。定量孢粉数据和其他公布的数据将被纳入重建海面条件（温度、盐度、海冰覆盖）、冰川作用历史以及高纬度海洋对中中新世以来北极主要门户-弗拉姆海峡-全球气候变冷的反应。

Despite sucessfully drilling Neogene sediments during ODP Legs 151 and 162 and IODP Expedition 302, the Neogene paleoenvironmental evolution in the coldwater domain of the Atlantic sector of the high northern latitudes is virtually unknown. A transect from the seasonally-ice covered Nordic Seas to the perennial ice-covered Arctic Ocean, consisting of the Sites 907, 909, and M2A, will be used to unravel the paleoenvironmental history for the period between ~16 and 3 Ma years. A Neogene palynomorph biostratigraphy (dinoflagellate cysts, acritarchs and other organic-walled algae) will be established and calibrated versus magnetostratigraphy to provide a reference stratigraphy for existing holes and for future drilling activities in the ice-covered regions. Quantitative palynomorph data and other published data will be incorporated in a reconstruction of sea-surface conditions (temperature, salinity, sea-ice cover), of the glaciation history, and of the response of high latitude oceans to global climate cooling across the major Arctic Gateway, the Fram Strait, since the Middle Miocene.