Documentation of the physical properties of annually laminated (varved) sediments at a sub-annual to decadal resolution for environmental interpretation

被引：45
作者：
Tiljander, M
Ojala, A
Saarinen, T
Snowball, I
机构：
[1] Geol Survey Finland, FIN-02150 Espoo, Finland
[2] Dept Quaternary Geol, S-22363 Lund, Sweden
来源：
QUATERNARY INTERNATIONAL | 2002年 / 88卷
基金：
芬兰科学院;
关键词：
D O I：
10.1016/S1040-6182(01)00068-4
中图分类号：
P9 [自然地理学];
学科分类号：
0705 ; 070501 ;
摘要：
This paper describes a method to digitize high-resolution physical properties of annually laminated lake sediments. We modified a water-acetone epoxy exchange method in order to preserve all the fine structural details that varved sequences provide. By applying sediment microstratigraphical investigations (X-ray radiography, SEM) and semi-automatic image analysis, we were able to establish detailed information about varve composition and structure. Mineral magnetic measurements were also applied for comparison. By comparing all available physical data at high resolution, it will be possible to identify environmental changes that has occurred in the lake drainage basin. (C) 2002 Elsevier Science Ltd and INQUA. All rights reserved.
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页码：5 / 12
页数：8
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