Strontium isotope variations in the sedimentary sequence of Lake Baikal

Kuzmin, M. I.; Drill, S. I.; Sandimirov, I. V.; Sandimirova, G. P.; Geletii, V. F.; Chukanov, V. S.; Kalmychkov, G. V.; Бычинский, В. А.

doi:10.1134/s1028334x07010308

Cited by 7 publications

(6 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The recent increase of 87 Sr/ 86 Sr ratio in both terrigenic and diatom-rich sediments of the Akademichesky ridge was assumed to be due to a catastrophic earthquake like those which formed Proval Bay in 1861 (Kuzmin et al, 2007). However, as we argue in a section below, this could also reflect a rapid growth of mountains as the result of postglacial rebounding.…”

Section: Sedimentary Record Of Submerged Akademichesky Ridgementioning

confidence: 79%

“…debate about the correct stacking of the two cores and the dating of the BDP-98-2 core, which was resolved by the 10 Be dating method (Horiuchi et al 2003(Horiuchi et al , 2004 Prior to 5 Ma, terrigenic sediments from major rivers (e.g., Selenga, Barguzin, Upper Angara) deposited on the precursor of the Akademichesky ridge had a relatively high rate of sedimentation. The former layers are characterized by a higher 87 Sr/ 86 Sr ratio compared to diatom-rich sediments, because diatoms gain strontium from the water, which is generally less radiogenic than dominant ancient (Paleozoic and Pre-Cambrian) rocks sampled by incoming rivers (Kuzmin et al 2007). 3).…”

Section: Lake Baikalmentioning

confidence: 99%

See 1 more Smart Citation

Tectonics of the Baikal Rift Deduced from Volcanism and Sedimentation: A Review Oriented to the Baikal and Hovsgol Lake Systems

Ivanov

Demonterova

2009

Biosilica in Evolution, Morphogenesis, and Nanobiotechnology

View full text Add to dashboard Cite

As known from inland sedimentary records, boreholes, and geophysical data, the initiation of the Baikal rift basins began as early as the Eocene. Dating of volcanic rocks on the rift shoulders indicates that volcanism started later, in the Early Miocene or probably in the Late Oligocene. Prominent tectonic uplift took place at about 20 Ma, but information (from both sediments and volcanics) on the initial stage of the rifting is scarce and incomplete. A comprehensive record of sedimentation derived from two stacked boreholes drilled at the submerged Akademichesky ridge indicates that the deep freshwater Lake Baikal existed for at least 8.4 Ma, while the exact formation of the lake in its roughly present-day shape and volume is unknown. Four important events of tectonic/environmental changes at about approximately 7, approximately 5, approximately 2.5, and approximately 0.1 Ma are seen in that record. The first event probably corresponds to a stage of rift propagation from the historical center towards the wings of the rift system. Rifting in the Hovsgol area was initiated at about this time. The event of ~5 Ma is a likely candidate for the boundary between slow and fast stages of rifting. It is reflected in a drastic change of sedimentation rate due to isolation of the Akademichesky ridge from the central and northern Lake Baikal basins. The youngest event of 0.1 Ma is reflected by the (87)0Sr/ (86)Sr ratio increase in Lake Baikal waters and probably related to an increasing rate of mountain growth (and hence erosion) resulting from glacial rebounding. The latter is responsible for the reorganization of the outflow pattern with the termination of the paleo-Manzurka outlet and the formation of the Angara outlet. The event of approximately 2.5 Ma is reflected in the decrease of the (87)Sr/(86)Sr and Na/Al ratios in Lake Baikal waters. We suggest that it is associated with a decrease of the dust load due to a reorganization of the atmospheric circulations in Mainland Asia. All these tectonic and climatic events could (and actually did) influence the biota of Lake Baikal. The Hovsgol rift basin was shaped to its recent form between 5.5 and 0.4 Ma. However, freshwater Lake Hovsgol appeared only in the latest pre-Holocene time as a result of meltwater inflow and increase of atmospheric precipitations during the Bølling-Allerød warming. Prior to this, a significantly smaller, saline outflow-free precursor of Lake Hovsgol existed. It explains why two, now connected, lakes of similar water chemistry within similar climatic and tectonic conditions differ so much in their biodiversity.

show abstract

Section: Sedimentary Record Of Submerged Akademichesky Ridgementioning

confidence: 79%

Section: Lake Baikalmentioning

confidence: 99%

Tectonics of the Baikal Rift Deduced from Volcanism and Sedimentation: A Review Oriented to the Baikal and Hovsgol Lake Systems

Ivanov

Demonterova

2009

Biosilica in Evolution, Morphogenesis, and Nanobiotechnology

View full text Add to dashboard Cite

show abstract

“…Another interesting feature is that the 87 Sr/ 86 Sr ratio in both terrigenic and diatom sediments of Lake Baikal increased rapidly at about 100 ka from the present-day water value of about 0.7088 (Falkner et al 1997) to 0.7097 in the diatoms and to 0.713 in the terrigenic sediments (Kuzmin et al 2007). Kuzmin et al (2007) interpreted such an increase as evidence of a catastrophic earthquake, which brought to the lake significant amounts of terrigenic material.…”

Section: International Geology Reviewmentioning

confidence: 96%

“…Kuzmin et al (2007) interpreted such an increase as evidence of a catastrophic earthquake, which brought to the lake significant amounts of terrigenic material. As an analogue they referenced the 1861 earthquake which formed Proval Bay (Figure 1b).…”

Section: International Geology Reviewmentioning

confidence: 96%

Catastrophic outburst and tsunami flooding of Lake Baikal: U–Pb detrital zircon provenance study of the Palaeo-Manzurka megaflood sediments

Ivanov

Demonterova

Резницкий

et al. 2015

International Geology Review

View full text Add to dashboard Cite

Lake Baikal, the largest freshwater reservoir on Earth (~600 × 30 km in size and up to 1.6 km in depth), has more than 300 contributing rivers but only one N-trending outflow -River Angara. In the Pliocene or Pleistocene, another N-trending outflow operated through the Palaeo-Manzurka to Lena. Provenance analysis using U-Pb dating of detrital zircons from the Palaeo-Manzurka sediments demonstrates that the dominant source of the zircons was the lake deposits, while the contribution of zircons from local bedrocks was limited to about 8% only. Looking for an explanation of this, we propose a hypothesis that formation of the Palaeo-Manzurka sediments took place in association with a catastrophic mega-landslide (~15 × 3 km) into the lake and the resulting mega-tsunami flooding. ARTICLE HISTORY

show abstract

“…However, this idea is inconsistent with the geological age of the Manzurka and Anga formations and with the sedimentary structures and textures that record a long deposition. The event of large clastic input into Lake Baikal about 100 thousand years ago (Kuzmin et al, 2007) rather corresponded to the Tyya activity, the latest tectonic phase responsible for the present-day lake depths (Mats 2012). …”

mentioning

confidence: 99%

Comment on catastrophic outburst and tsunami of Lake Baikal: U-Pb detrital zircon provenance study of the Palaeo-Manzurka megaflood sediments by A.V. Ivanov, E.I. Demonterova, L.Z. Reznitskii, I.G. Barash, S.G. Arzhannikov, A.V. Arzhannikova, C.-H. Hung, S.-L. Chung, and Y. Iizuka

Mats

2016

International Geology Review

View full text Add to dashboard Cite

This is a comment on the publication by Ivanov et al. (2015) on catastrophic outburst of Lake Baikal and provenance of the Palaeo-Manzurka sediments based on U-Pb dating of detrital zircons. The Paleo-Manzurka river system influenced largely the Baikal discharge and the lake level in general. The suggested model predicting the origin of the Manzurka sediments by catastrophic landsliding and related megaflooding in the Late Pleistocene disagrees with geological and biostratigraphic constraints. However, the paper raises important problems which require further research. ARTICLE HISTORY

show abstract

Strontium isotope variations in the sedimentary sequence of Lake Baikal

Cited by 7 publications

References 3 publications

Tectonics of the Baikal Rift Deduced from Volcanism and Sedimentation: A Review Oriented to the Baikal and Hovsgol Lake Systems

Tectonics of the Baikal Rift Deduced from Volcanism and Sedimentation: A Review Oriented to the Baikal and Hovsgol Lake Systems

Catastrophic outburst and tsunami flooding of Lake Baikal: U–Pb detrital zircon provenance study of the Palaeo-Manzurka megaflood sediments

Comment on catastrophic outburst and tsunami of Lake Baikal: U-Pb detrital zircon provenance study of the Palaeo-Manzurka megaflood sediments by A.V. Ivanov, E.I. Demonterova, L.Z. Reznitskii, I.G. Barash, S.G. Arzhannikov, A.V. Arzhannikova, C.-H. Hung, S.-L. Chung, and Y. Iizuka

Contact Info

Product

Resources

About