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Doklady Earth Sciences - Based on the first created digital model of the Valaam archipelago (Lake Ladoga) with a spatial resolution of 25 × 25 m, a quantitative assessment of the spatial...  相似文献   
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The minor-element composition of bottom sediments from the littoral zone of the northern part of Lake Ladoga was studied. Close relationships between the anomalous Cd concentrations in lake sediments and Quaternary glacial formations on the territory of Karelia were shown. A negative correlation of Cd with other heavy metals and a positive correlation with Zr were observed. Most likely, Cd is an impurity in zircons from sandy and sandy loam sedimentary formations on the northern coastal area of Lake Ladoga.  相似文献   
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