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北美第四纪沉积物曾有过一段漫长而有趣的历史。内布拉斯加州的第四纪沉积物是很重要的,因为许多经济活动都依赖于这些堆积物上发育的土壤和从沉积物中汲出的水,建筑材料也采自这些沉积物。从某种意义上说,几乎所有从事陆地上工作的人都是第四纪研究者,农民注意各种土类的差异和散布于内布拉斯加东部冰川作用区周围的奇特“外来石”景观,打井工人都熟悉这些沉积地层和埋藏在古河道中呈“脉状”
Quaternary sediments in North America have had a long and interesting history. Quaternary sediments in Nebraska are important because much of the economic activity depends on the soils developed on these deposits and the water drained from the deposits from which they are also collected. In a sense, almost all people working on land are Quaternary researchers, noting the differences among various soils and peculiar “alien stones” scattered around the glaciation area east of Nebraska. Landscape, drilling workers are familiar with these sedimentary strata and buried in the ancient river was “vein-shaped”