通过第四纪沉积物的地球化学和沉积学综合分析重建匈牙利科伦湖的古环境演化

IF 2.3 Q2 GEOSCIENCES, MULTIDISCIPLINARY Quaternary Pub Date : 2023-07-03 DOI:10.3390/quat6030039
Tamás Zsolt Vári, S. Gulyás, P. Sümegi
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引用次数: 1

摘要

Kolon湖(匈牙利)位于Turjánvidék区域的中部,介于多瑙河流域的盐湖和Homokhátság之间,是多瑙河- tisza交汇处地区最重要的天然水生栖息地之一。本研究的核心问题是湖泊是如何变化的,以及环境因素和人类活动是如何影响可隆湖这些古环境变化的。对岩心序列的多代理分析(着火损失、粒度、磁化率和地球化学)提供了重要的见解。值得注意的是,在以下关系中观察到相关性:(1)粘土,有机质和来自有机来源的元素,如Na, K和Zn;(2)质、砂、无机物和来自无机来源的元素,如Fe、Al、Ti、Na、K和P;(3)碳酸盐含量和碳酸盐源元素,如Ca和Mg。在过去的27000年里,湖泊的古环境发生了重大变化。晚更新世风沙为低营养湖泊(17700 BP)提供了底部,随后是钙质中营养Chara-lake阶段(13800 BP)。泥炭堆积与富营养化湖泊阶段开始于更新世-全新世边界,大约在11700 BP左右。从10300 BP开始,随着泥炭地扩展期的出现,有机质(泥炭)比例显著增加。由于喀尔巴阡盆地不同的新兴文化,人类活动的变化分别发生在大约9000-8000 BP和942-579 BP之间,这是由于匈牙利人的定居和附近的活动。
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Reconstructing the Paleoenvironmental Evolution of Lake Kolon (Hungary) through Integrated Geochemical and Sedimentological Analyses of Quaternary Sediments
Lake Kolon (Hungary), situated in the middle of the Turjánvidék area between the saline lakes of the Danube valley and the Homokhátság, is one of the most significant natural aquatic habitats in the Danube–Tisza Interfluve region. The central question of this study is how the lake changed, and how environmental factors and human activities have influenced these paleoenvironmental changes in Lake Kolon. A multiproxy analysis of a core sequence (loss on ignition, grain size, magnetic susceptibility, and geochemistry) provided crucial insights. Notably, correlations are observed in the following relationships: (1) clay, organic matter, and elements derived from organic sources, such as Na, K, and Zn; (2) MS, sand, inorganic matter, and elements originating from inorganic sources, such as Fe, Al, Ti, Na, K, and P; and (3) carbonate content and elements originating from carbonate sources, such as Ca and Mg. The lake’s paleoenvironment underwent significant changes in the past 27,000 years. Late-Pleistocene wind-blown sand provided the bottom for an oligotrophic lake (17,700 BP), followed by a calcareous mesotrophic Chara-lake phase (13,800 BP). Peat accumulation, along with the eutrophic lake phase, began at the Pleistocene–Holocene boundary around 11,700 BP. From 10,300 BP, with the emergence of an extended peatland phase, the percentage of organic matter (peat) increased significantly. Anthropogenic changes occurred from around 9000–8000 BP due to the different emerging cultures in the Carpathian basin, and from 942–579 BP due to the Hungarian settlements and activity nearby, respectively.
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来源期刊
Quaternary
Quaternary GEOSCIENCES, MULTIDISCIPLINARY-
CiteScore
3.30
自引率
4.30%
发文量
44
审稿时长
11 weeks
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