Abstract

Based on the data from long sediment cores retrieved by R/V Eltanin (United States) during the 1950s–1960s, Neo- and Eopleistocene lithofacies maps of the southern Pacific Ocean (scale 1 : 20 000 000) and Scotia Sea (scale 1 : 10 000 000) were compiled for the first time. For the Scotia Sea, schemes of isopachites are shown on the respective lithofacies maps. All maps are processed with the volumetric method proposed by A.B. Ronov. The results revealed that accumulation rates of the terrigenous and siliceous sediments increased during the Pleistocene in both sedimentation basins due to neotectonic activity in the Antarctic Peninsula, which enhanced fluxes of not only terrigenous matter but also nutrients delivered by melted waters to the photosynthesis zone via vertical circulation.

中文翻译：

---

南太平洋深海底和斯科舍海更新世沉积相相结构和定量参数

摘要

根据1950年代至1960年代R / V Eltanin（美国）从长沉积岩心中获得的数据，得出了南太平洋（比例为1：20000000）和斯科舍海（比例为1：1）的新世和始新世岩相图。第一次）。对于斯科舍海，在各自的岩相图上都显示了等渗物方案。所有地图均使用AB Ronov提出的体积方法进行处理。结果表明，由于南极半岛的新构造活动，两个沉积盆地的更新世期间，陆源和硅质沉积物的积累速率增加，不仅增加了陆源物质的通量，而且还增加了融化水通过垂直向光合作用区输送的养分的通量。循环。