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首页> 外文期刊>Quaternary International >Late Quaternary landscape evolution, soil stratigraphy, and geoarchaeology of the Caprock Canyonlands, Northwest Texas, USA
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Late Quaternary landscape evolution, soil stratigraphy, and geoarchaeology of the Caprock Canyonlands, Northwest Texas, USA

机译：美国德克萨斯州西北部盖普洛克峡谷地的第四纪晚期地貌演化，土壤地层学和地质考古学

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摘要

In northwest Texas, USA, between the Southern High Plains to the west and the Central Lowlands to the east, lies a geographic boundary known as the "Escarpment Breaks" or "Caprock Canyonlands." The canyonlands contain abundant springs, lithic resources, shelter, and plant and animal food sources that attracted hunter-gatherer groups. A geoarchaeological study was conducted in the canyonlands to determine the effects of late-Quaternary landscape evolution, especially intensive erosion, on the region's archaeological record. Geomorphic and stratigraphic field research and a total of 95 new radiocarbon age determinations, 94 of which were determined on paired samples, aid in reconstructing an understudied dynamic and erosive landscape, and explain how the landscape has changed. The pattern is similar to reported data from the Central Plains and western Rolling Plains but dissimilar to the Southern High Plains. High rates of erosion and geological controls on the South Fork of the Double Mountain Fork of the Brazos River, a 4th order stream, have hindered the discovery of deeply buried soils and in situ Paleoindian artifacts and features, but a late-Holocene pedocomplex is relatively intact in valley fills beneath remnants of the T-2 terrace of the South Fork. The eroding slopes near the edge of the caprock escarpment exposed a record of in situ Archaic to Protohistoric-aged materials. The eroding slopes should be targeted for future quantification of erosion and archaeological preservation bias for the canyonlands.
机译：在美国得克萨斯州西北部，介于西部的南部高平原和东部的中部低地之间，是一个地理边界，被称为“悬崖断裂带”或“ Caprock峡谷地”。峡谷地拥有丰富的泉水，石质资源，庇护所以及动植物食物来源，吸引了狩猎采集者群体。在峡谷地带进行了一项地质考古研究，以确定第四纪后期景观演化，特别是强烈侵蚀对该地区考古记录的影响。地貌和地层实地研究以及总共95个新的放射性碳年龄测定，其中94个是在成对的样本上确定的，有助于重建被研究不足的动态和侵蚀性景观，并解释景观如何变化。这种模式与中原和西部滚动平原的报道数据相似，但与南部高平原不同。第四级河布拉索斯河双山叉的南叉上的高侵蚀和地质控制，阻碍了深埋土壤和原地古印度文物和特征的发现，但是全新世晚期的古生物复杂完好无损的山谷中充满了南叉T-2梯田的残余物。盖岩悬崖边缘附近的侵蚀坡向原始史时期的材料暴露了原始的古风的记录。侵蚀的坡度应作为峡谷的侵蚀和考古保存偏见的未来量化目标。

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