首页> 外文期刊>Arctic: Journal of the Arctic Institute of North America >Upper Pleistocene stratigraphy, paleoecology, and archaeology of the northern Yukon interior, eastern Beringia. I. Bonnet Plume Basin
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Upper Pleistocene stratigraphy, paleoecology, and archaeology of the northern Yukon interior, eastern Beringia. I. Bonnet Plume Basin

机译:北部育空地区北部育空地区的上更新世地层,古生态学和考古学。一。帽子羽绒盆地

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New stratigraphic and chronometric data show that Bonnet Plume Basin, in northeastern Yukon Territory, was glaciated in late Wisconsinan time rather than during an earlier advance of Laurentide ice. This conclusion has important ramifications not only for the interpretation of all-time glacial limits farther north along the Richardson Mountains but also for non-glaciated basins in the Porcupine drainage to the northwest. The late Wisconsinan glacial episode in Bonnet Plume Basin is here named the Hungry Creek advance after the principal Quaternary section in the basin. Sediments beneath the till at Hungry Creek have produced well-produced pollen, plant macrofossils, insects, and a few vertebrate remains. The plant and invertebrate fossils provide a detailed, if temporally restricted, record of a portion of the mid-Wisconsinan interstadial, while the vertebrate fossils include the oldest Yukon specimen of the Yukon wild ass. Some of the mid-Wisconsinan sediments have also yielded distinctive chert flakes that represent either a previously unreported product of natural fracturing or a by-product of stone tool manufacture by human residents of Bonnet Plume Basin. In addition to presenting new data on these diverse but interrelated topics, this paper serves as an introduction to a series of reports that will treat in turn the Upper Pleistocene record of Bluefish, Old Crow, and Bell basins, respectively
机译:新的地层和计时数据表明,育空地区东北部的邦尼特羽流盆地是在威斯康星州晚期而不是在洛朗泰德冰期早期的冰川期。该结论不仅对解释沿理查森山脉更北端的历史冰川界限具有重要意义,而且对西北豪猪排泄区的非冰川盆地也具有重要意义。 Bonnet Plume盆地的威斯康星州晚期冰川事件在该盆地主要第四纪断面之后被命名为Hungry Creek推进。饥饿溪(Hungry Creek)耕地下的沉积物产生了高产的花粉,植物大化石,昆虫和一些脊椎动物残骸。植物和无脊椎动物化石提供了详细的记录(如果受时间限制),记录了威斯康星州中部中间星际的一部分,而脊椎动物化石包括育空地区最古老的育空地区标本。威斯康星州中部的一些沉积物也产生了独特的石薄片,这些薄片既不是以前从未报道过的自然压裂产品,又是Bonnet Plume盆地人类居民生产石器工具的副产品。除了提供有关这些不同但相互关联的主题的新数据外,本文还作为一系列报告的简介,这些报告将依次处理蓝鱼,老鸦和贝尔盆地的上更新世记录。

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