Application of synchrotron X-ray fluorescent analysis to studies of the records of paleoclimates of Eurasia stored in the sediments of Lake Baikal and Lake Teletskoye

Goldberg, E.L.; Грачев, М.А.; Phedorin, M.A.; Калугин, И. А.; Khlystov, Oleg; Mezentsev, S.N.; Azarova, I. N.; Vorobyeva, S. S.; Zheleznyakova, T. O.; Kulipanov, G.N.; Kondratyev, Vladimir; Miginsky, E.G.; Tsukanov, V. M.; Zolotarev, K.V.; Трунова, В. А.; Kolmogorov, Yu. P.; Bobrov, V. A.

doi:10.1016/s0168-9002(01)01084-1

Cited by 20 publications

(4 citation statements)

References 24 publications

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“…The aim of the calculations is to get time‐resolving profiles of weight fractions of glacial (interglacial) facies in the sediment core based on multielemental composition of the sediments. A method for such calculations was first proposed by E. L. Goldberg and was applied for Lake Baikal sediments [ Goldberg et al ., , ; Goldberg , ; Goldberg and Grachev , ]. The essence of this method is the multielemental comparison of each horizon of a sediment core with a chosen “standard,” i.e., sediments whose elemental composition formed during one of the extreme climatic periods (interglacial optima and glacial maxima).…”

Section: Methodsmentioning

confidence: 99%

Geochemical multielement signatures of glacial and interglacial facies of the Okhotsk Sea deepwater sediments during the past 350 kyr: A response to global climate changes at the orbital and millennial scales

et al. 2015

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The previously dated deepwater sediment core MR06-04 PC-7R (length 1723 cm; 350 kyr) recovered from the central Okhotsk Sea (OS) was analyzed for biogenic compounds and for 63 chemical elements (using the inductively coupled plasma-mass spectrometry method) with a high resolution (1 cm;~200 years). A one box model with two main members" and mathematical methods (based on multielemental composition of sediments) for the calculation of weight fractions (at each time slice) of two main types of geochemical facies that dominate during considerably diverse climatic periods (glacial maxima and interglacial optima) were proposed and tested. This model can be applied to other analogous natural systems whose sedimentation is driven by two main types of geochemical facies. The application of the developed model to the studied core revealed that variations of weight fractions of the typical interglacial and glacial geochemical facies in the sediments along the core depth (named as warm and cold "covariators," respectively) change synchronously with global and regional climate variability. Profiles of warm and inversed cold covariators coincide tightly, and their values increase during warm marine isotope stages and substages and decrease during cold ones over the last 350 kyr. Millennial scale changes in covariators had occurred simultaneously with abrupt variability in the OS productivity and sediment lithology and with millennial global climate variability. Some discrepancies in the warm and inversed cold covariators calculated using specific mathematical treatments revealed the episodic influence of volcanogenic matter presented in the core by visible tephra layers and cryptotephras.

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Section: Methodsmentioning

confidence: 99%

Geochemical multielement signatures of glacial and interglacial facies of the Okhotsk Sea deepwater sediments during the past 350 kyr: A response to global climate changes at the orbital and millennial scales

et al. 2015

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“…The spectral responses of sediments were measured by the energy-dispersive X-ray fluorescence method by non-destructive continuous scanning of samples [1,3]. The samples were 10-30 cm long, 1.5-2 cm wide and 0.6 cm thick slices of wet sediment placed into aluminum trays.…”

Section: Methodsmentioning

confidence: 99%

Prediction of absolute concentrations of elements from SR XRF scan measurements of natural wet sediments

Phedorin

Goldberg

2005

Nuclear Instruments and Methods in Physics Research Section A:

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“…The scanning procedure of cores was maintained according to [6][7][8][9]. The deposit samples (slabs with a length of 30 cm, a width of 1.5 cm, and a thickness of 0.5 cm) were cut from the core's axial portion and packed with plastic wrap.…”

Section: Investigation Into the Elemental Composition Of Sapropel Fromentioning

confidence: 99%

Investigation into the elemental composition of sapropel from Lake Kirek (West Siberia) by SR XFA technique

Bobrov

Fedorin

Леонова

et al. 2012

J. Synch. Investig.

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The synchrotron radiation X ray fluorescence analysis (SRXFA) technique was applied for scan ning two sapropel cores: 6.2 m (coordinates of boring 56°11Ј93Љ N, 84°23Ј22Љ E) and 3.6 m (56°10Ј93Љ N, 84°22Ј94Љ E), obtained at a depth of 5 and 7 m, respectively, in Lake Kirek (southern part of Tomsk oblast, West Siberia). Based on variations in the content of eight chemical elements in stratified core horizons, the geochemical types of the sapropels and their prevalence were established. In the sediment of the 6.2 m core within the overall boundaries of the Holocene, low ferric calcareous sapropel dominates, the geochemical characteristic of which is presented by the average values of 13 chemical elements in the strata grouped by the main climatic periods of the Holocene. Organic ferrous sapropel 90 cm in depth was uncovered in the 3.6 m core in the range 215-305 cm (age of 7-4 ka). For the other core horizons, the deposit is represented by cal careous sapropel, but with higher contents of iron in comparison with the first type. The geochemical differ entiation of these two types of sapropels (in 3.6 m core) is characterized by average contents of 31 chemical elements. The consistency of the compositions and concentrations of chemical elements in sapropels in the Holocene section of the deposits is evidence of the identical formation conditions for these types of sapropel.

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Application of synchrotron X-ray fluorescent analysis to studies of the records of paleoclimates of Eurasia stored in the sediments of Lake Baikal and Lake Teletskoye

Cited by 20 publications

References 24 publications

Geochemical multielement signatures of glacial and interglacial facies of the Okhotsk Sea deepwater sediments during the past 350 kyr: A response to global climate changes at the orbital and millennial scales

Geochemical multielement signatures of glacial and interglacial facies of the Okhotsk Sea deepwater sediments during the past 350 kyr: A response to global climate changes at the orbital and millennial scales

Prediction of absolute concentrations of elements from SR XRF scan measurements of natural wet sediments

Investigation into the elemental composition of sapropel from Lake Kirek (West Siberia) by SR XFA technique

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