Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1017/qua.2017.63 |
Late Quaternary loess and soils on uplands in the Canyonlands and Mesa Verde areas, Utah and Colorado | |
Reheis, Marith C.1; Goldstein, Harland L.1; Reynolds, Richard L.1; Forman, Steven L.2; Mahan, Shannon A.1; Carrara, Paule E.1 | |
通讯作者 | Reheis, Marith C. |
会议名称 | Annual Meeting of the Loess-and-Pedostratigraphy-Focus-Group of the International-Union-for-Quaternary-Research (INQUA) |
会议日期 | SEP, 2016 |
会议地点 | Eau Claire, WI |
英文摘要 | Thin loess deposits on the uplands of the southeastern Colorado Plateau have previously not been well studied. We sampled deposits and soils from trenches on Hatch Point (HP) mesa near Canyonlands National Park, Utah, and from two outcrops in Mesa Verde National Park, Colorado. At HP, the oldest buried unit yielded 2 optically stimulated luminescence (OSL) ages of 10,370 and 7555 yr; the middle unit yielded 10 OSL ages from 6220 to 1385 yr; and the youngest unit had a single age of 1740 yr. At Mesa Verde (MV), three loess units are preserved in the two outcrops we examined; 6 OSL ages range from 51 to 17 ka. At least one buried soil is present between two units with ages of about 50 and 40 ka. The ages of the loess units in both study areas correspond well with OSL-dated dune sands in Canyonlands National Park and with dune sands on Black Mesa, Arizona. Particle-size distribution combined with chemical and magnetic data indicate that HP loess was derived mostly from nearby sandstone sources with a small component of far-traveled atmospheric dust, whereas MV loess was sourced both from the nearby sandstone and the San Juan River and its tributaries. |
英文关键词 | Loess Colorado Plateau Late Quaternary Luminescence dating |
来源出版物 | QUATERNARY RESEARCH |
ISSN | 0033-5894 |
EISSN | 1096-0287 |
出版年 | 2018 |
卷号 | 89 |
期号 | 3 |
页码 | 718-738 |
出版者 | CAMBRIDGE UNIV PRESS |
类型 | Article;Proceedings Paper |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E ; CPCI-S |
WOS记录号 | WOS:000432179700009 |
WOS关键词 | NUTRIENT INPUTS ; SINGLE ALIQUOT ; MOJAVE DESERT ; AEOLIAN DUST ; LUMINESCENCE ; DEPOSITS ; SIZE ; SEDIMENT ; PROTOCOL ; GRAINS |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/307785 |
作者单位 | 1.US Geol Survey, Fed Ctr, MS-980,Box 25046, Denver, CO 80225 USA; 2.Baylor Univ, Dept Geol, One Bear Pl 97354, Waco, TX 76798 USA |
推荐引用方式 GB/T 7714 | Reheis, Marith C.,Goldstein, Harland L.,Reynolds, Richard L.,et al. Late Quaternary loess and soils on uplands in the Canyonlands and Mesa Verde areas, Utah and Colorado[C]:CAMBRIDGE UNIV PRESS,2018:718-738. |
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