Loessoids of Russia: Varieties and distribution
Loessoids of Russia: Varieties and distribution
复制标题
俄罗斯黄土：品种和分布
DOI：
10.1016/j.quaint.2021.01.005
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发表时间：
2021
影响因子：
2.2
通讯作者：
V. Shkatova
中科院分区：
文献类型：
--
作者：
V. Astakhov;L. Pestova;V. Shkatova
本文对黄土，即黄土和各种类黄土沉积物的示意图作了说明。这张地图是正在进行的俄罗斯联邦第四纪地图项目的副产品，比例尺为1：2500,000地理信息系统格式。主要信息来自过去两代的标准国家地质图比例尺1：1,000,000，并补充文献数据。地图多边形显示了所有可绘制的黄土单元，包括厚厚的南方碳酸盐古土壤黄土，北部地形的黄土状粉砂，具有水成相的黄土沉积物夹层，以及北极和亚北极型的冰粉。根据地层层序将黄土建造划分为：1)北部地区上更新世放射性碳定年；2)俄罗斯中部中更新世+上更新世；3)南部地区晚更新世-上更新世系列；4)南部下更新世红色粘土。多种多样的黄土体的分布印记了：1)更新世基本干旱的冰缘地带的多种多样的沉积环境；2)现代地理地带性从亚热带向冰冷的北极高地转变，并负责地面尘埃的沉积后变化。无论原生尘埃的来源和成岩作用的地理变化如何，所有的黄土都具有相同的基本特征--古土壤，无论是数量多而富于表达的，还是稀少而脆弱的。它们强调了气候驱动的间歇性黄土体形成过程--基本上是地下的，不受任何水剂的影响。
This review serves as an explanatory note to the sketch map of loessoids, i.e. loess and various loess-like deposits. The map is a byproduct of the ongoing project of Quaternary Map of the Russian Federation,scale 1:2,500,000 in GIS-format.The primary information is derived from the standard National Geological Map scale 1:1,000,000 of the last two generations supplemented by literary data. The map polygons present all mappable loessoid units, including thick southern carbonate loess with paleosols, loess-like silts of northern terrains, intercalations of loessic sediments with waterlain facies and icy silts of the Arctic and Subarctic type. The loessoid formations are classified according to their stratigraphic intervals: 1) the radiocarbon dated Upper Pleistocene of northern terrains, 2) the Middle plus Upper Pleistocene of central Russia, 3) the late Lower Pleistocene to Upper Pleistocene series of southern regions and 4) the Lower Pleistocene red clays of the south. The distribution of diverse loessoids is an imprint of: i) the diverse sedimentary environments of the basically arid periglacial zones of the Pleistocene and ii) the modern geographical zonality changing from subtropics to the icy High Arctic and responsible for post-depositional alteration of subaerial dust. Whatever the origin of the primary dust and geographical varieties of the diagenesis, all loessoids share the same fundamental feature – paleosols, whether numerous and expressive or scarce and weak. They underline the climatically driven intermittent process of loessoid formation – basically subaerial and independent of any aqueous agencies.
DOI：
10.1016/b978-0-444-53643-3.00106-0
发表时间：
2013
期刊：
影响因子：
--
作者：
Schirrmeister L;Froese D;Tumskoy V;Grosse G;Wetterich S
通讯作者：
Wetterich S
影响因子：
12.1
作者：
Strauss, Jens;Schirrmeister, Lutz;Veremeeva, Alexandra
通讯作者：
Veremeeva, Alexandra