Bottom Rock Material of Polar Seas: Distribution, Composition, and Genesis

被引：2
|
作者：
Kharin, G. S. [1 ]
Eroshenko, D., V [1 ]
机构：
[1] Shirshov Inst Oceanol RAS, Moscow, Russia
来源：
OCEANOLOGY | 2020年 / 60卷 / 06期
基金：
俄罗斯科学基金会;
关键词：
bottom rock material; ice rafting; ice gouging; petrography; sandstone; gneiss; granite; indicator rocks;
D O I：
10.1134/S0001437020050082
中图分类号：
P7 [海洋学];
学科分类号：
0707 ;
摘要：
We have summarized the results of studies of bottom rock material in Quaternary sediments in the polar seas of the Arctic, North Atlantic, and Antarctica, obtained by sieve washing on expeditions of the Shirshov Institute of Oceanology, Russian Academy of Sciences. We have compiled maps of the quantitative distribution of this material over water areas and created pie charts of the petrographic composition for various sites. A wide variety of petrographic types of rocks has been revealed, caused by their transport by glaciers, icebergs, and ice from glaciation centers on continents and islands. We have identified petrographic provinces based on the composition of the rock material and determined its sources. At the same time, great importance has been given to searching for marker rocks, making it possible to correlate the rock material of the seas with their land sources.
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页码：840 / 853
页数：14
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