米库良间冰期俄罗斯阿尔汉格尔斯克地区贝壳生长增量作为潮汐指示

IF 0.7 4区 地球科学 Q4 PALEONTOLOGY
Jan Kresten Nielsen
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引用次数: 0

摘要

摘要俄罗斯阿尔汉格尔斯克州北部广泛分布米库期(Eemian)海相沉积。沿Pyoza河和Vaskha河的暴露处发现了岸面矿床;然而,迄今为止,在那里还没有发现毫无疑问是潮汐成因的矿床。相比之下,我们发现,从海岸沉积物中出土的Macoma balthica (Linnaeus, 1758) (Tellinidae, Bivalvia)的壳显示出生长模式,表明该双壳类动物生活在潮汐周期性影响的环境中。周期为混合潮,低潮高度日差异显著。在阿尔汉格尔斯克地区,潮汐影响下的米库利安水动力条件仍然鲜为人知。由于balthica在化石记录中的时空分布广泛,其壳具有很大的潮汐解释潜力,有助于水文重建。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Shell Growth Increments as Indicator of Tide in the Arkhangelsk Region (Russia) during the Mikulinian Interglacial

Shell Growth Increments as Indicator of Tide in the Arkhangelsk Region (Russia) during the Mikulinian Interglacial

Abstract

Mikulinian (Eemian) marine deposits are widespread in the northern Arkhangelsk Region, Russia. Shoreface deposits have been found in exposures along the Pyoza and Vaskha rivers; however, deposits of undoubtedly tidal origin have not hitherto been recognized there. By contrast, here we show that shells of Macoma balthica (Linnaeus, 1758) (Tellinidae, Bivalvia) unearthed from the shoreface deposits show growth patterns indicating that the bivalves lived in an environment affected by tidal periodicity. The periodicity was a mixed tide with significantly diurnal inequality in the height of the low waters. In the Arkhangelsk Region, the Mikulinian hydrodynamical conditions of the tidally influenced regime are still poorly known. Because the spatial and temporal distribution of M. balthica is broad in the fossil record, its shells have a large potential for tidal interpretations, as contribution to hydrological reconstructions.

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来源期刊
Paleontological Journal
Paleontological Journal 地学-古生物学
CiteScore
1.20
自引率
33.30%
发文量
70
审稿时长
6-12 weeks
期刊介绍: Paleontological Journal (Paleontologicheskii zhurnal) is the principal Russian periodical in paleontology. The journal publishes original work on the anatomy, morphology, and taxonomy of fossil organisms, as well as their distribution, ecology, and origin. It also publishes studies on the evolution of organisms, ecosystems, and the biosphere and provides invaluable information on global biostratigraphy with an emphasis on Eastern Europe and Asia.
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