Geochemical Peculiarities of the Pacific Pleistocene Sediments

IF 0.9 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS

Lithology and Mineral Resources Pub Date : 2025-06-03 DOI:10.1134/S0024490225700075

M. A. Levitan, L. G. Domaratskaya, A. V. Koltsova, K. V. Syromyatnikov

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Abstract

In this geochemical review, tables of average arithmetic chemical composition, mean weighted chemical composition, accumulation rates, and mass accumulation rates of chemical components are presented. They are based on the records from cruises of the International Deep Sea Drilling Project and other literature data concerning the main lithologic types of the Pacific Pleistocene sediments. These tables can be used for the comparative analysis with sediments of the same or other stratons in different oceanic basins, as well as paleoceanic sediments on the continents. The terrigenous matrix dominates in the lithogenic matter. We revealed a close resemblance between the chemical composition of volcanic sediments and hemipelagic clays. Peculiarities of hydrothermal sediments are described. Using the methods of mathematical statistics, we deciphered the main geochemical associations and principal factors determining the chemical composition of studied sediments. Masses of major oxides and several trace elements have been calculated for Pleistocene sediments. A concept about the average chemical composition of the Pacific Pleistocene is proposed.

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太平洋更新世沉积物的地球化学特征

在地球化学综述中，给出了化学成分的平均算术化学成分表、平均加权化学成分表、富集率表和质量富集率表。它们基于国际深海钻探项目的巡航记录和其他有关太平洋更新世沉积物主要岩性类型的文献数据。这些表可用于与不同大洋盆地同一层或其他层的沉积物以及大陆上的古海洋沉积物进行比较分析。陆源基质在造岩物质中占主导地位。我们发现火山沉积物和半深海粘土的化学成分非常相似。描述了热液沉积物的特点。利用数理统计的方法，我们破译了研究沉积物的主要地球化学关联和决定化学成分的主要因素。计算了更新世沉积物中主要氧化物和几种微量元素的质量。提出了太平洋更新世平均化学成分的概念。

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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.