The Lake Baikal drilling project in the context of a global lake drilling initiative

Williams, Douglas F.; Kuzmin, M. I.; Prokopenko, Alexander A.; Karabanov, E. B.; Хурсевич, Г. К.; Безрукова, Е. В.

doi:10.1016/s1040-6182(01)00015-5

Cited by 53 publications

(16 citation statements)

References 23 publications

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“…Here we synthesize the 1990-1992 seismic-reflection data and combine it with morphological data from published bathymetry and lithological data from cores of the Lake Baikal Paleoclimate Project (Lake Baikal Paleoclimate Project Members 1992) and the Baikal Drilling Project (Williams et al 1992;Kuzmin et al 1993;BDP Members 1997a, 1997bWilliams et al 2001). Of particular importance in discussing sedimentary environments and processes are the published chronological data (e.g., Edgington et al 1991, Edgington et al 1996Colman et al 1996b;Williams et al 1997).…”

Section: Purpose and Focusmentioning

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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Section: Purpose and Focusmentioning

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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“…As a result, many of these systems have been the targets of recent lake drilling projects, because they can elucidate climatic processes operating at these long temporal scales Fritz et al, 2007;Scholz et al, 2007). Long-lived lakes also have the potential to reveal evolutionary processes, including diversification, speciation, and extinction of aquatic biota (Khursevich et al, 2001;Williams et al, 2001), as well as the long-term ontogeny of the lake basin itself.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, ancient organisms may have gone extinct (Khursevich et al, 2001;Williams et al, 2001), and hence their ecology cannot be determined from modern analogs. In such cases, ecological tolerances can only be inferred from generic analogs, morphological characteristics, or the co-occurrence of extinct taxa with assemblages of other organisms with known ecological affinities or with distinctive geochemical or sedimentary features.…”

Section: Introductionmentioning

confidence: 99%

Evolution of the Lake Titicaca basin and its diatom flora over the last ~370,000years

Fritz

Baker

Tapia

et al. 2012

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…1) has experienced a boom of palaeoenvironmental studies during the past decade (e.g. Colman et al, 1996;BDP-Members, 1997Grachev et al, 1997;Williams et al, 1997Williams et al, , 2001Demske et al, 2005;Oberhänsli and Mackay, 2005;Tarasov et al, 2007a and references therein). A rising interest in Lake Baikal -the world's largest, deepest and oldest freshwater reservoir -is easy to understand.…”

Section: Introductionmentioning

confidence: 99%

Late Glacial and Holocene changes in vegetation cover and climate in southern Siberia derived from a 15 kyr long pollen record from Lake Kotokel

2009

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Abstract. In this study a radiocarbon-dated pollen record from Lake Kotokel (52 • 47 N, 108 • 07 E, 458 m a.s.l.) located in southern Siberia east of Lake Baikal was used to derive quantitative characteristics of regional vegetation and climate from about 15 kyr BP (1 kyr=1000 cal. yr) until today. Quantitative reconstruction of the late glacial vegetation and climate dynamics suggests that open steppe and tundra communities predominated in the study area prior to ca. 13.5 kyr BP and again during the Younger Dryas interval, between 12.8 and 11.6 kyr BP. The pollen-based climate reconstruction suggests lower-than-present mean January (∼−38 • C) and July (∼12 • C) temperatures and annual precipitation (∼270-300 mm) values during these time intervals. Boreal woodland replaced the primarily open landscape around Kotokel three times at about 14.8-14.7 kyr BP, during the Allerød Interstadial between 13.3-12.8 kyr BP and with the onset of the Holocene interglacial between 11.5 and 10.5 kyr BP, presumably in response to a noticeable increase in precipitation, and in July and January temperatures. The maximal spread of the boreal forest (taiga) communities in the region is associated with a warmer and wetter-than-present climate (T w ∼17-18 • C, T c ∼−19 • C, P ann ∼500-550 mm) that occurred ca. 10.8-7.3 kyr BP. During this time interval woody vegetation covered more than 50% of the area within a 21×21 km window around the lake. The pollen-based best modern analogue reconstruction suggests a decrease in woody cover percentages and in all cliCorrespondence to: P. E. Tarasov (ptarasov@zedat.fu-berlin.de) matic variables about 7-6.5 kyr BP. Our results demonstrate a gradual decrease in precipitation and mean January temperature towards their present-day values in the region around Lake Kotokel since that time.

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The Lake Baikal drilling project in the context of a global lake drilling initiative

Cited by 53 publications

References 23 publications

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

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

Evolution of the Lake Titicaca basin and its diatom flora over the last ~370,000years

Late Glacial and Holocene changes in vegetation cover and climate in southern Siberia derived from a 15 kyr long pollen record from Lake Kotokel

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