Pleistocene-Holocene Fluxes Are Not the Earth's Norm
Pleistocene-Holocene Fluxes Are Not the Earth's Norm
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发表时间：
1994
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通讯作者：
W. Hay
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作者：
W. Hay
人们早就认识到，全球更新世-全新世物质通量在质量上不同于新生代和中生代早期的物质通量，但直到最近才开始出现全面的差异。由于缺乏关于陆地和浅海沉积物厚度和分布范围的一致信息，很难对更新世-全新世期间侵蚀、搬运和沉积的物质质量进行定量估计。地质图通常显示出第四纪覆盖在较老沉积物上的大面积区域，但是关于构成这些沉积物的冰碛物、冲积层和崩积层的厚度的信息分散在文献中，并且通常是不完整的。
It has long been recognized that global Pleistocene-Holocene material fluxes are qualitatively distinct from those of the earlier Cenozoic and Mesozoic, but the full extent of the differences has only recently begun to emerge. Quantitative estimates of the masses of material eroded, transported, and deposited during the Pleistocene-Holocene have been difficult to obtain because of the lack of consistent information on the thicknesses and areal extent of the deposits on land and in shallow seas. Geologic maps commonly show extensive areas of Quaternary cover on older sediments, but information on the thickness of the tills, alluvium, and colluvium that make up these deposits is scattered throughout the literature and is often incomplete.