Late Quaternary Paleoenvironments of the Northern Alaskan Range, Alaska

该奖项支持对阿拉斯加山脉中北部已知有机沉积物聚集的昆虫化石、植物大化石和花粉的调查，研究它们的古环境和地层学意义。威斯康辛中部的bouellier期是白令陆桥东部晚更新世的一个重要时期。这个时期富含有机物的沉积物在没有冰川覆盖的阿拉斯加和育空地区随处可见。这些沉积物的广泛存在表明区域气候的改善和生物群落的相关变化。这项研究将通过近间隔采样和对已知的bouellier时代沉积物进行详细的岩石地层分析，建立高分辨率的古环境变化记录，从而记录这些变化。这些古生态研究将填补以前在阿拉斯加西南部和阿拉斯加内陆/育空地区进行的bouellier古环境研究的区域空白。这些数据将对了解白令陆桥古气候在全球气候事件中的作用作出重大贡献。

This award supports an investigation of the insect fossils, plant macrofossils and pollen of known accumulations of organic sediment of the North Central Alaska Range, addressing their paleoenvironmental and stratigraphic significance. The mid-Wisconsin, Boutellier interval is an important time during the late Pleistocene in eastern Beringia. Organic-rich sediments that date to this interval are ubiquitous throughout unglaciated Alaska and the Yukon Territory. The widespread occurrence of these deposits suggests regional climatic amelioration and associated changes in biological communities. This investigation will document these changes by developing a high-resolution record of paleoenvironmental change through close-interval sampling and detailed lithostratigraphic analysis of known deposits of Boutellier age. These paleoecological studies will fill a regional gap in previous Boutellier paleoenvironmental investigations in southwestern Alaska and the Alaskan interior/Yukon regions. This data will contribute significantly to an understanding of the role of Beringian paleoclimates in global climatic events.