Evidence of paleoseismic activity recorded in glaciolacustrine sediments predating the Weichselian glacial maximum in East Lithuania

Author:

Satkūnas Jonas,Šliaupa Saulius

Abstract

AbstractSoft-sediment deformation structures (SSDS) were identified in proglacial lacustrine (glaciolacustrine) sediments dated to 25–24 ka in the Buivydžiai outcrop, situated 30 km north of Vilnius in east Lithuania. These sediments accumulated in front of the last Weichselian glaciation maximum. The SSDS originated due to sandy silt liquefaction that disrupted the decimeter-thick silty sand interlayer. A NW-SE trending Buivydžiai fault was mapped in the proximity (8 km) of the Buivydžiai outcrop. The fault is well traced by a dense drilling in the sediments of the preglacial Daumantai Formation in the basal part of the Quaternary cover and attributed to the earliest Pleistocene. Depth difference of the formation along the fault is ~5–8 m; the northern flank is relatively uplifted with respect to the southern flank. The Buivydžiai earthquake was most likely induced by formation of an elastic forebulge flexure of the Earth's crust in front of the ice sheet. The magnitude was evaluated ~M = 6.0–6.5 and was most likely of shallow hypocenter depth. Furthermore, the Bystritsa (Belarus) earthquake of magnitude M = 3.5–4.0 was registered in December 1908 to the east (12 km) of the Buivydžiai outcrop along the Buivydžiai fault, which points to recurrent seismic activity of this fault.

Publisher

Cambridge University Press (CUP)

Subject

General Earth and Planetary Sciences,Earth-Surface Processes,Arts and Humanities (miscellaneous)

Reference89 articles.

1. Active faulting and seismic hazard in the Outer Western Carpathians (Polish Galicia): evidence from fractured Quaternary gravels;Tokarski;Journal of Structural Geology,2020

2. Nirei, H. , Takayuki, K. , Marker, B. , Satkūnas, J. , Kazaoka, O. , Furuno, K ., 2015. Differences in geological hazards from liquefaction-fluidization and Jinami (ground waves) in the areas facing Tokyo Bay and San Francisco Bay. The Proceedings of the Fifth International Symposium on Man-Made Strata and Geo-Pollution, September 4–6, 2015, Urayasu City, Japan, pp. 45–54.

3. Glacio-seismotectonics: ice sheets, crustal deformation and seismicity

4. Morphotectonic implication of the Paleoproterozoic Mid-Lithuanian Suture Zone

5. Anthropogenic Earth-change: we are on a slippery slope, breaking new ground and it's our fault—a multi-disciplinary review and new unified Earth-system hypothesis;Allen;Journal of Earth Science and Engineering,2013

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3