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Deglaciation and meltwater events in hudson strait and the Eastern Canadian Arctic

机译:哈德逊海峡和加拿大东部北极地区的冰川消融和融水事件

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Stable isotope measurements on molluses from raised marine deposits, and on foraminifera in a piston core, define a series of light isotope events. A major event is14C dated at ca. 10.3 ka and is correlated with a marked isotopic excursion in HU77-021-156. This event is followed by a dramatic rise in diatom and, slightly later, in benthic foraminiferal abundances. Molluses record another light event around 8 ka. Major fluctuations in both δ18O and δ13C around 10.3 ka suggests that the Hudson Strait ice stream may have responded to the Younger Dryas climatic oscillatio
机译:对来自凸起的海洋沉积物的软体和活塞核心中的有孔虫的稳定同位素测量确定了一系列轻同位素事件。一个重大事件是14C,其年代约为10.3 ka,与HU77-021-156中明显的同位素偏移有关。这一事件之后,硅藻急剧增加,稍晚之后,底栖有孔虫的丰度急剧上升。Molluses在8 ka左右记录了另一个光事件。δ18O和δ13C在10.3 ka左右的主要波动表明,哈德逊海峡冰流可能对Younger Dryas气候振荡做出了反应

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