Isolation basin stratigraphy and Holocene relative sea-level change on the Barents Sea coast at Teriberka, Kola Peninsula, northwestern Russia

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-05-28 DOI:10.1177/09596836231176489

V. Kolka, D. Tolstobrov, G. D. Corner, O. Korsakova, Alena Tolstobrova, A. Vashkov

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Abstract

The paper presents isolation basin stratigraphy in bottom sediments from nine lakes in the Teriberka area on the Kola Peninsula, northwestern Russia. Isolation contacts in these basins, identified from lithological and diatom analysis, were used together with 25 radiocarbon dates, to construct a relative sea-level (RSL) curve for the Holocene. Records of marine water re-influx were found in the sediment sequence from one lake, located at c. 17 m a.s.l. The re-influx of marine water seems to be caused by the mid-Holocene (Tapes) transgression and tsunami event. The RSL curve indicates several phases in the postglacial evolution of the Kola coast. An early phase of rapid sea-level fall of c. 32 m around 11,500 cal yr BP, at a rate of c. 40 mm per year, corresponds to glacio-isostatically induced emergence following deglaciation at the Younger Dryas and beginning of the Holocene. In the time interval between c. 11,000 and 7600 cal yr BP, either a stillstand or a slight rise in relative sea level, cresting at about 21 m a.s.l., is suggested in the Teriberka area. This is followed, after c. 7300 cal yr BP to the present day, by a slow glacioisostatic emergence with an average rate of about 2–3 mm per year.

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俄罗斯西北部科拉半岛捷利别尔卡巴伦支海岸隔离盆地地层与全新世相对海平面变化

本文介绍了俄罗斯西北部科拉半岛Teriberka地区九个湖泊底部沉积物的孤立盆地地层学。通过岩性和硅藻分析确定的这些盆地中的隔离接触，与25个放射性碳年代一起使用，构建了全新世的相对海平面（RSL）曲线。在一个湖泊的沉积物序列中发现了海水重新流入的记录，该湖泊位于约17年海水的再次涌入似乎是由全新世中期（Tapes）海侵和海啸事件引起的。RSL曲线表明了科拉海岸冰川后演化的几个阶段。11500年左右海平面迅速下降约32米的早期阶段 cal yr BP，以每年约40毫米的速度，对应于年轻Dryas冰川消退和全新世开始后冰川均衡引起的出现。在约11000至7600 cal yr BP之间的时间间隔内，相对海平面出现静止或轻微上升，最高点约为21 m a.s.l.，建议在Teriberka地区。随后，在公元7300年BP之后，直到今天，缓慢的冰川均衡出现，平均速度约为2-3 毫米/年。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.