气候变化领域集成服务门户(CCPortal): Evidence of multiple slip events on postglacial faults in northern Fennoscandia

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DOI	10.1016/j.quascirev.2019.05.022
	Evidence of multiple slip events on postglacial faults in northern Fennoscandia
	Mattila J.; Ojala A.E.K.; Ruskeeniemi T.; Palmu J.-P.; Aaltonen I.; Käpyaho A.; Lindberg A.; Sutinen R.
发表日期	2019
ISSN	0277-3791
起始页码	242
结束页码	252
卷号	215
英文摘要	An analysis of high-resolution LiDAR-based digital elevation models (DEMs), trenching of Quaternary deposits, diamond drilling and a structural analysis of the bedrock were conducted in order to characterise the geological structure and to derive full slip profiles of the Venejärvi–Jauhojärvi postglacial fault complex located in northern Finland. The Venejärvi-Jauhojärvi fault complex consists of 17 surface ruptures striking in a SW–NE direction, cutting through Late Weichselian till and traceable for a total distance of 29.9 km. Based on stratigraphical and structural analysis we show that the Naamivitikko fault segment, which is part of the Venejärvi–Jauhojärvi complex, hosted up to three distinct slip events and it is therefore argued that the prevailing single-rupture hypothesis of postglacial faults should be treated with caution. Based on the measured surface rupture dimensions, it is conservatively estimated that the maximum moment magnitude of the paleoseismic event that the complex hosted, ranged between Mw ≈ 5.8–8.4. If uncertainties in the scaling laws equating surface rupture dimensions to moment magnitudes are accounted for, a more realistic maximum moment magnitude range between Mw ≈ 5.8–7.6 is given. © 2019 Elsevier Ltd
英文关键词	Fennoscandia; Finland; LiDAR; Multiple slip events; Paleoseismology; Postglacial faults
语种	英语
scopus关键词	Diamond deposits; Diamond drilling; Optical radar; Structural analysis; Digital elevation model; Fennoscandia; Finland; Geological structures; High-resolution lidar; Multiple slips; Paleoseismology; Quaternary deposits; Fault slips; bedrock; digital elevation model; drilling; fault; geological structure; lidar; paleoseismicity; Postglacial; rupture; slip; strike (geology); structural analysis; trench; Weichselian; Fennoscandia; Finland
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151903
作者单位	Geological Survey of Finland, P.O. Box 96, Espoo, 02151, Finland; Geological Survey of Finland, P.O. Box 77, Rovaniemi, 96101, Finland
推荐引用方式 GB/T 7714	Mattila J.,Ojala A.E.K.,Ruskeeniemi T.,et al. Evidence of multiple slip events on postglacial faults in northern Fennoscandia[J],2019,215.
APA	Mattila J..,Ojala A.E.K..,Ruskeeniemi T..,Palmu J.-P..,Aaltonen I..,...&Sutinen R..(2019).Evidence of multiple slip events on postglacial faults in northern Fennoscandia.Quaternary Science Reviews,215.
MLA	Mattila J.,et al."Evidence of multiple slip events on postglacial faults in northern Fennoscandia".Quaternary Science Reviews 215(2019).