Lithogeochemistry of Silty–Pelitic Bottom Sediments in the Southwestern Kara Sea

IF 0.7 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS

Lithology and Mineral Resources Pub Date : 2025-02-17 DOI:10.1134/S0024490224700834

A. V. Maslov, D. P. Starodymova, I. A. Migdisova, N. V. Kozina, E. A. Novichkova, T. N. Alekseeva, V. P. Shevchenko

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Abstract

Lithogeochemical characteristics of the pelitic and silty–pelitic bottom sediment samples, collected during Cruise 89 of the R/V Akademik Mstislav Keldysh (September 2022), from several areas in the southwestern Kara Sea (Baidaratsk Bay, Pukhuchansk Depression, West Kara Step, and Novaya Zemlya Depression) are discussied. It has been established that the muds contain a significant proportion of the lithogenic component. This conclusion agrees well with the localization of sediment data points on various discriminant diagrams near the reference points of average Paleozoic graywackes and PAAS. Such component could be sourced either from the fine-grained suspended particulates of the Ob River or from the sedimentary rocks and friable sediments of the Yamal and Yugra Peninsulas, Vaigach, and Novaya Zemlya. Although the upper layer of bottom sediments in the southwestern Kara Sea contains a noticeable amount of the mafic igneous rock fragments from Novaya Zemlya, which should make a significant contribution to their erosion products in the mud composition, parameters of the chondrite-normalized REE distribution in the sediments are inconsistent with such assumption.

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来源期刊

Lithology and Mineral Resources 地学-地球化学与地球物理

CiteScore

1.30

自引率

37.50%

发文量

审稿时长

>12 weeks

期刊介绍： Lithology and Mineral Resources is an international peer reviewed journal that publishes articles on a wide range of problems related to the formation of sedimentary rocks and ores. Special attention is given to comparison of ancient sedimentary rock and ore formation with present-day processes. The major part of the journal is devoted to comparative analysis of sedimentary processes on the continents and in oceans, as well as the genetic aspects of the formation of sedimentary and hydrothermal–sedimentary mineral resources. The journal welcomes manuscripts from all countries in the English or Russian language.