Late Quaternary Paleoenvironments of the Northern Alaskan Range, Alaska

阿拉斯加北阿拉斯加山脉晚第四纪古环境

• 批准号: 8921807
• 负责人: Scott Elias
• 金额: $ 13.19万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-04-15 至 1992-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8921807&HistoricalAwards=false
• 关键词: Late; Quaternary; Paleoenvironments; Northern; Alaskan

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.

该奖项支持对这种昆虫的调查 化石、植物宏化石和花粉 北中部有机沉积物的积累 阿拉斯加山脉，解决其古环境和 地层学意义 威斯康星州中部的布泰利耶 这段时间是晚更新世的重要时期 在东柏林。 富含有机物的沉积物 这种间歇期在整个无冰川的阿拉斯加随处可见 和育空地区。 普遍发生 这些沉积物表明区域气候改善， 生物群落的相关变化。 这 调查将通过开发一个 高分辨率古环境变化记录 通过紧密间隔采样和详细的 已知矿床的岩石地层学分析 布特利尔年龄。 这些古生态学研究将填补 古环境区域差异 在阿拉斯加西南部和阿拉斯加州的调查 内陆/育空地区。 这些数据将有助于 这对理解柏林人的作用有重要意义 全球气候事件中的古气候