Stable isotope compositions of pedogenic carbonates and soil organic matter in a temperate climate Vertisol with gilgai, southern Russia

Kovda, I. V.; Mora, Claudia I.; Wilding, L. P.

doi:10.1016/j.geoderma.2006.04.016

Cited by 32 publications

(17 citation statements)

References 21 publications

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“…Vertisols offer opportunities for paleoecological studies because of their ability to accumulate organic matter and calcium carbonate nodules within soil horizons (Kovda et al 2006). However, it is important to understand the chronostratigraphy of vertisols and calcic nodules formed within them.…”

Section: Introductionmentioning

confidence: 99%

Radiocarbon ages of pedogenic carbonate nodules from Coimbatore region, Tamil Nadu

et al. 2010

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In this paper we discuss the limitation of radiocarbon dates on the pedogenic calcic nodules formed in situ within the vertisols in the upland region of Coimbatore, Tamil Nadu. The radiocarbon ages were obtained using lowlevel scintillation counters and the dates range from ~24 to 31 14 C kyrs BP. The ages correlate with the marine isotope stage of Late MIS3. However, since the calcic nodules are pedogenised and formed in an open system, the 14 C ages should only be considered as estimates and not absolute ages because of the possibility of open-system behaviour with respect to carbon. Thus, we express caution in the interpretation of these and other radiocarbon ages obtained on pedogenic carbonate nodules. Multiple sub-mm size subsamples could provide more reliable age estimates.

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Section: Introductionmentioning

confidence: 99%

Radiocarbon ages of pedogenic carbonate nodules from Coimbatore region, Tamil Nadu

et al. 2010

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“…Higher δ 13 C values of TOC in sediments have been related to contributions from C 4 plants (Collister et al, 1994) or enhanced primary production that caused the residual dissolved inorganic carbon to be enriched in 13 C (Scherf and Rullkötter, 2009), or 13 C-enriched soil carbonate resulting from low concentrations of CO 2 (Mackie et al, 2007). Our results favor the second explanation because the predominance of C 3 plants in the catchment (Lu et al, 2001;Xu et al, 2006) and because organic carbon in Alpine soils has low δ 13 C (Kovda et al, 2006). Higher primary production has enriched the TOC of Lake Erhai sediments (7.65-14.91%) more than the sediments of Lake Qinghai and its satellite lakes (0.78-1.50%) (LZBCAS, 1994;.…”

Section: Bulk Sediments Analysismentioning

confidence: 53%

Distribution and carbon isotope composition of lipid biomarkers in Lake Erhai and Lake Gahai sediments on the Tibetan Plateau

Tuo

Zhang

et al. 2011

Journal of Great Lakes Research

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“…In Russia, the areas of slitic (vertic) soils are known in the North Caucasus [5,7,14,16,21,27,61,63,69,91], on the Volga-Akhtuba floodplain [4,23,28,30,31], and in mesodepressions of the Caspian Lowland [60]. These soils have also been described on southern spurs of the Donetsk Ridge [65] and in the Manych River valley [22,24].…”

Section: Introductionmentioning

confidence: 99%

The geography of Vertisols and Vertic soils in the Kuban-Azov Lowland

et al. 2015

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The soils shown on Russian soil maps of the Kuban-Azov Lowland under the names of slitic (ver tic) and compacted soils contain diagnostic features characteristic of the type of dark slitozems and subtypes of slitic soils in the new Russian soil classification system, or Vertisols and Vertic soils in the WRB system. These are slickensides, wedge shaped structure, clayey texture through the entire soil profile, and shrinkage cracks formed during soil drying. It was found that dark quasi gley slitozems (Vertisols) occur in the central parts of the bottoms of large (> 1.5 km along the longest axis) closed depressions. Humus quasi gley slitozems (Vertic Stagnic Phaeozems (Clayic, Pachic)) are confined to the peripheral parts of the bottoms of these depressions and to the bottoms of smaller (0.8-1.5 km) closed depressions. Deeply slitic humus-quasi gley soils and deeply slitic clay illuvial chernozems (Bathyvertic Stagnic Phaeozems (Clayic, Pachic)), in which the upper boundary of slickensides is found at the depths from 100 to 200 cm, usually occur in the bottoms of closed depressions with the longest axis of less than 0.6-0.8 km and in the bottoms and on slopes of shallow flat bot tomed ravines. With respect to the distribution of Vertisols and Vertic soils, the Kuban-Azov Lowland can be subdivided into eight soil districts. In five of them, these soils occupy from 0.1% to 12.1% of the territory.

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Stable isotope compositions of pedogenic carbonates and soil organic matter in a temperate climate Vertisol with gilgai, southern Russia

Cited by 32 publications

References 21 publications

Radiocarbon ages of pedogenic carbonate nodules from Coimbatore region, Tamil Nadu

Radiocarbon ages of pedogenic carbonate nodules from Coimbatore region, Tamil Nadu

Distribution and carbon isotope composition of lipid biomarkers in Lake Erhai and Lake Gahai sediments on the Tibetan Plateau

The geography of Vertisols and Vertic soils in the Kuban-Azov Lowland

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