Seismic stratigraphy of Quaternary deposits in Lake Peipsi, eastern Estonia

Noormets, Riko; Hang, Tiit; Miidel, Avo; Flodén, Tom; Bjerkéus, Monica

doi:10.1080/11035899801201047

Cited by 7 publications

(15 citation statements)

References 2 publications

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“…1). The first information on the thickness, structure, and distribution of the Quaternary deposits in the lake itself was recently obtained through the continuous seismic reflection profiling in the western part of the lake (Noormets et al 1998).…”

Section: Introductionmentioning

confidence: 99%

New Data on the Distribution and Stratigraphy of the Bottom Deposits of Lake Peipsi, Eastern Estonia

Hang¹,

Miidel²,

Kalm³

et al. 2001

Proceedings of the Estonian Academy of Sciences. Geology

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Section: Introductionmentioning

confidence: 99%

New Data on the Distribution and Stratigraphy of the Bottom Deposits of Lake Peipsi, Eastern Estonia

Hang¹,

Miidel²,

Kalm³

et al. 2001

Proceedings of the Estonian Academy of Sciences. Geology

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“…The thickness of the till overlying the bedrock is about 5-8 m in the northern part of the lake. Glaciolacustrine and postglacial lacustrine deposits overlying the till are 7-8 m thick in the northern and up to 37 m thick in the central part of the lake (Noormets et al 1998). Holocene deposits, which in the central part of the lake are represented by lake marl up to 2 m thick overlain by up to 4 m of gyttja, are almost absent in the northern part .…”

mentioning

confidence: 98%

A local clay‐varve chronology and proglacial sedimentary environment in glacial Lake Peipsi, eastern Estonia

Hang

2003

Boreas

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A local clay-varve chronology and proglacial sedimentary environment in glacial Lake Peipsi, eastern Estonia TIIT HANG Hang, T. 2003 (June): A local clay-varve chronology and proglacial sedimentary environment in glacial Lake Peipsi, eastern Estonia. Boreas, Vol. 32, pp. 416-426. Oslo. ISSN 0300-9483.Ten cores consisting of varved clay from the northern part of Lake Peipsi in eastern Estonia have been correlated using varve thickness variations and specific marker varves into a 375-year floating varve chronology. Continuous sedimentation during gradual ice recession is concluded from a clear transition from proximal to distal varves. Cyclic variations in varve thickness are caused mainly by thickness changes of clayey winter layers. This is interpreted to indicate increased influx of finer material due to faster melting of the glacier. The cyclic pattern of thickness change is explained by alternating periods of increased and decreased melting of the ice. Simultaneous accumulation of varved clay in glacial Lake Peipsi and in the Luga and Neva basins of Russia is concluded from the good visual correlation between the mean varve thickness diagrams for the three chronologies. Because the varve chronologies from northwestern Russia have been tentatively correlated to the Swedish varve chronology, the timing of the clay accumulation in glacial Lake Peipsi is placed between c. 13 500 and 13 100 varve years BP.

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“…The thickness of the Quaternary cover is highly variable, ranging from a few metres in the northwest to over 50 m in the central part (Noormets et al, 1998). The Pleistocene sequence is rather simple, the main deposits being tills of the last glaciation and glacial meltwater deposits (Raukas, 2003).…”

Section: Geology Of the Study Areamentioning

confidence: 99%

“…The Pleistocene sequence is rather simple, the main deposits being tills of the last glaciation and glacial meltwater deposits (Raukas, 2003). The northern part of the lake sediment cover consists of till and glaciolacustrine clay, overlain by Holocene lake deposits (Noormets et al, 1998;Hang, 2001). In the northern part of the lake, Holocene deposits, represented by a lacustrine marl up to 2 m thick and overlain by up to 4 m of gyttja, are missing from many parts of the bottom (Hang, 2001).…”

Section: Geology Of the Study Areamentioning

confidence: 99%

Hazardous radioactivity levels and heavy mineral concentrations in beach sediments of Lake Peipsi, northeastern Estonia

et al. 2018

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The present study discusses results of heavy mineral analyses and radioactivity of beach sediments of Lake Peipsi. Such analyses are commonly done globally, but had not yet been conducted for the fourth largest lake in Europe. The average heavy mineral content in Lake Peipsi beach sediments along the northern and western coast is higher than usual for Estonian coastal and Quaternary sediments. Concomitantly, elevated radioactivity levels have been measured in several places, with the highest concentrations observed at Alajõe (1885.5 Bq/kg), which is over five times more than the recommended limit. The aim of the present study is to find sites with higher radioactivity levels, because the northern coast of Lake Peipsi is a well-known recreational area.

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Seismic stratigraphy of Quaternary deposits in Lake Peipsi, eastern Estonia

Cited by 7 publications

References 2 publications

New Data on the Distribution and Stratigraphy of the Bottom Deposits of Lake Peipsi, Eastern Estonia

New Data on the Distribution and Stratigraphy of the Bottom Deposits of Lake Peipsi, Eastern Estonia

A local clay‐varve chronology and proglacial sedimentary environment in glacial Lake Peipsi, eastern Estonia

Hazardous radioactivity levels and heavy mineral concentrations in beach sediments of Lake Peipsi, northeastern Estonia

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