Biogenic silica accumulation and paleoproductivity in the northern basin of Lake Baikal during the Holocene

Linqing, Qiu; Williams, Douglas F.; Gvorzdkov, Alexander; Karabanov, E. B.; Shimaraeva, Marina

doi:10.1130/0091-7613(1993)021<0025:bsaapi>2.3.co;2

Cited by 83 publications

(33 citation statements)

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“…Bezrukova et al (1991) and Bradbury et al (1994) independently identified a large increase in accumulation of diatoms in sediments deposited since the start of the Holocene. Qiu et al (1993) corroborated these observations against similar trends in Holocene biogenic silica accumulation. Bradbury et al (1994) further characterized Late Pleistocene-Holocene sediment profiles using six dated age zones and two undated zones that were identified by their preserved diatom communities.…”

Section: Discussionsupporting

confidence: 78%

A 200,000‐year, high‐resolution record of diatom productivity and community makeup from Lake Baikal shows high correspondence to the marine oxygen‐isotope record of climate change

Edlund

Stoermer

2000

Limnology & Oceanography

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Siliceous microfossil succession was analyzed in a 200,000‐yr sediment sequence recovered from the Buguldeika Saddle in Lake Baikal, Russia. Siliceous microfossil abundance varied among core depths from no preserved microfossils during inferred colder climate conditions to recent interglacial sediments containing over 300 × 106 microfossils per g dry sediment. Depth‐age microfossil assemblage zones (CA‐I to CA‐IV) identified using correspondence analysis had high correspondence to stages in the marine d18O isotope record and could be partially aligned with Late Pleistocene glacial‐interglacial cycling models from the mid‐Siberian Highland. These observations suggest that Lake Baikal phytoplankton communities have responded to climatic changes driven by insolation parameters and global ice volumes on temporal scales similar to tropical and polar oceans. Microfossil zone CA‐I (0–11.4 kyr B.P.) corresponded to the Holocene interglacial or d18O stage 1 (0–11.4 kyr B.P.), a period of higher production in Lake Baikal during a climatic optimum. Microfossil zone CA‐II (12.3–18.7 kyr B.P.) corresponded to the Sartan glaciation and d18O stage 2 (12–24 kyr B.P.). Zone CA‐III (21.3–73.2 kyr B.P.) comprised d18O stages 3 and 4. However, within zone CA‐III, subzones CA‐IIIa and IIIb (21.3–56.8 kyr B.P.) grouped were well aligned with d18O stage 3 and contained sediments deposited during the inferred Karginskiy interstade. Microfossil zone CA‐IVa (77.4–129.2 kyr B.P.) and CA‐IVb (130.3–172.5 kyr B.P.) included d18O stages 5 and 6, respectively, with sediments that were most likely deposited during the Taz glaciation and the Kazantsevo interstade. Climate‐induced changes are reflected in production differences and in community composition specificity within microfossil zones or climate stages. This suggests that climate change drives major historical successional patterns in Lake Baikal's primary producer community; changes in primary producers must have further impacted the system's entire biota.

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Section: Discussionsupporting

confidence: 78%

A 200,000‐year, high‐resolution record of diatom productivity and community makeup from Lake Baikal shows high correspondence to the marine oxygen‐isotope record of climate change

Edlund

Stoermer

2000

Limnology & Oceanography

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“…Rates during full glacial intervals may be even higher, but no age information exists for full-glacial sediments in the turbidite basins. Other radiocarbon-based estimates of average sedimentation rates on the basin floor, for example, at site 295 (Bezrukova et al 1991;Qiu et al 1993) are probably not reliable (Carter and Colman 1994).…”

Section: Basin Floors and Subaqueous Fansmentioning

confidence: 99%

Quaternary Sedimentation and Subsidence History of Lake Baikal, Siberia, Based on Seismic Stratigraphy and Coring

Colman¹,

Karabanov²,

Nelson³

2003

Journal of Sedimentary Research

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The long, continuous, high-latitude, stratigraphic record of Lake Baikal was deposited in three broad sedimentary environments, defined by high-resolution seismic-reflection and coring methods: (1) turbidite depositional systems, by far the most widespread, characterizing most of the margins and floors of the main basins of the lake, (2) large deltas of major drainages, and (3) tectonically or topographically isolated ridges and banks. Holocene sedimentation rates based on radiocarbon ages vary by more than an order of magnitude among these environments, from less than about 0.03 mm/yr on ridges and banks to more than about 0.3 mm/yr on basin floors. Extrapolating these rates, with a correction for compaction, yields tentative estimates of about 25 and 11 Ma for the inception of rifting in the Central and North basins, respectively, and less than 6 Ma for the 200-m sediment depth on Academician Ridge.The Selenga Delta has the distinctive form of a classic prograding Gilbert-type delta, but its history appears to represent a complex combination of tectonism and sedimentation. The central part of the delta is underlain by prograding, shallow-water sequences, now several hundred meters below the lake surface. These deposits and much of the delta slope are mantled by fine-grained, deep-water, hemipelagic deposits whose base is estimated to be about 650,000 years old. Modern coarse-grained sediment bypasses the delta slope through fault-controlled canyons that feed large, subaqueous fans at the ends of the South and Central basins. These relations, along with abundant other evidence of recent faulting and the great depths of the Central and South basins, suggest that these two rift basins have experienced a period of unusually rapid subsidence over the last 650,000 years, during at least part of which sedimentation has failed to keep pace.

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“…In Lake Baikal sediments, the last ~2 ka are characterized by the lowest diatoms sedimentation rates (Qiu et al, 1993) related to enhanced recycling and regeneration of silica and low sedimentation rates (Scholz and Hutchinson, 2000). However, at the Continent site, we could not climatically interpret this time window with the GS due to the oxidized layer background noise.…”

Section: The Holocene (Ois1)mentioning

confidence: 57%

“…At low resolution, this clay/diatom ratio mirrors global variations of glacial-interglacial periods in Siberia (Khotinsky, 1984(Khotinsky, , 1989. Highest diatom abundance occurs in the warmest climate intervals, whereas cold periods are marked by lower diatom productivity (Bezrukova et al, 1991;Qiu et al, 1993;Granina et al, 1993;Williams and Jenkins, 1993;Bradbury et al, 1994;Carter and Colman, 1994;Karabanov et al, 1999;Rioual et al, 2005-this volume;Swann et al, 2005-this volume). Lake Baikal biogenic responses to atmospheric circulation are linked to thermal characteristics of the lake cycle and the rate of vertical exchange between surface waters and deep waters.…”

Section: Introductionmentioning

confidence: 99%

High-resolution diatom/clay record in Lake Baikal from grey scale, and magnetic susceptibility over Holocene and Termination I

Boës

Piotrowska

Fagel

2005

Global and Planetary Change

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Abstract:Tracing past climate signals from Lake Baikal sediments with a "multi-annual" resolution by conventional techniques is a difficult challenge since the sedimentation rates from Termination I up to the present range from 0.004 to 0.17 mm/year. In this paper, climate signals are reconstructed from three continuous sediment records from Vydrino Shoulder and Posolsky Bank in the Southern Basin, and Continent Ridge in the Northern Basin. For each coring site, a calendar age model was constructed using calibrated radiocarbon ages. The magnetic susceptibility is used to better constrain the age models over OIS4 to OIS1. The cores have been hardened using polymerized technique in order to allow the easy cut of thin sections that contain evidence for narrow biogenic/clayey laminations. The grey scale taken from the thin sections is used here as a high-resolution proxy record of diatom/clay ratio. The grey density values are qualitatively interpreted against the sediment components by optical microscopy from the thin sections. In the Northern Basin, the Continent station provides the best age model and sediment resolution over the Termination I period. In particular, four optima (i.e. Bölling, Alleröd, Atlantic, and Subboreal) are indicated by substantial increases of the grey scale, whereas cold periods like the Younger Dryas correspond to lower grey scale values. We emphasize that the short-term variations in the grey scale at 20 µm resolution could correspond to short climate responses in Lake Baikal sediments.

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Biogenic silica accumulation and paleoproductivity in the northern basin of Lake Baikal during the Holocene

Cited by 83 publications

References 0 publications

A 200,000‐year, high‐resolution record of diatom productivity and community makeup from Lake Baikal shows high correspondence to the marine oxygen‐isotope record of climate change

A 200,000‐year, high‐resolution record of diatom productivity and community makeup from Lake Baikal shows high correspondence to the marine oxygen‐isotope record of climate change

Quaternary Sedimentation and Subsidence History of Lake Baikal, Siberia, Based on Seismic Stratigraphy and Coring

High-resolution diatom/clay record in Lake Baikal from grey scale, and magnetic susceptibility over Holocene and Termination I

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