Seismites in Late Pleistocene and Holocene deposits of the northwestern Kola region (northern Baltic Shield)

被引:19
作者
Nikolaeva, S. B. [1 ]
机构
[1] Russian Acad Sci, Inst Geol, Kola Sci Ctr, Apatity 184200, Murmansk Region, Russia
关键词
seismites; paleoseismology; earthquakes; Pleistocene; Holocene; Kola region; Russia; YOUNG LACUSTRINE SEDIMENTS; SEISMOGENIC DEFORMATIONS; EARTHQUAKE; LIQUEFACTION; PENINSULA; FAULT;
D O I
10.1016/j.rgg.2008.12.009
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
New data on soft-sediment deformation in Late Pleistocene and Holocene deposits of the northwestern Kola Peninsula (Pechenga River valley) are reported and analyzed in terms of paleoseismicity implications. Soft-sediment deformation is assigned to paleoseismic triggers on the basis of special criteria. One sedimentary section in the Pechenga valley bears signature of several seismic events at the Late Pleistocene-Holocene boundary, constrained by radiocarbon dates. According to the morphology, sizes, and types of seismites, the earthquakes had an MSK-64 intensity at least VI-VII. The observed earthquake-induced deformation may be associated with tectonic subsidence of the Pechenga valley block. (C) 2009, IGM, Siberian Branch of the RAS. Published by Elsevier B. V. All rights reserved.
引用
收藏
页码:644 / 650
页数:7
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