Response of grain-size components of loess-paleosol sequence to Quaternary climate in the Southern Loess Plateau, China

Zhang, Qiying; Xu, Panpan; Qian, Hui; Hou, Kai

doi:10.1007/s12517-020-05830-9

Cited by 8 publications

(4 citation statements)

References 37 publications

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“…Figure 4 shows three parameters of particle size, namely the percentages of <4 m (clay) particles and 4-63 m (silt) particles, and the median particle size d(0.5) [49]. As the figure indicates, in loess horizons L 1 of ZK04, which is located in the northernmost part of the Luohe River Basin, the average percentage of <4 m particles was 13.95%, the average percentage of 4-63 m particles was 86.05%, and the average median particle size was 28.35 m. In paleosol S 1 , the average percentage of clay particles was 18.06%, that of silt particles was 81.84%, and the average median particle size was 24.06 m. For ZK18, located in the central region, the average percentage of <4 m particles was 22.12%, that of 4-63 m particles was 77.87%, and the average median particle size was 17.29 m in loess horizons L 1 .…”

Section: Differences In Spatial Characteristics Of Magnetic Susceptib...mentioning

confidence: 99%

Loess Strata Distribution Characteristics and Paleoclimate Spatial Pattern during the Last Interglacial in the Luohe River Basin

et al. 2023

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Paleoclimate studies of loess in China have focused mostly on the time series of a single borehole or profile. However, research on loess strata and regional paleoenvironmental patterns could facilitate a deeper understanding of loess as a paleoenvironmental indicator and provide new insights into interpreting loess in sedimentary records of the paleoclimate. In this study, we determined the spatial pattern and regional characteristics of the paleoclimate during the Last Interglacial period in the Luohe River Basin, Shaanxi Province, China. We selected four representative boreholes in the study area (ZK04, ZK18, ZK13, and ZK19) from different landforms and zones, distributed from the northwest to the southeast, as well as three classic profiles (JB, JD, and LC). From north to south, comparative analyses were conducted of the loess strata, magnetic susceptibility, and grain size, and we analyzed the distribution characteristics of loess and paleosols in different geomorphological regions. The results showed that both the thickness and the sedimentation rate of loess in this river basin decreased from north to south. There were few paleosol horizons in the northern Liangmao area, but numerous such horizons in the southern plateau, and the degree of paleosol development increased from north to south. The magnetic susceptibility increased, whereas the particle composition tended to become thinner from north to south. The climate fluctuations of the Last Glacial recorded by the loess and paleosols in different regions were inconsistent.

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Section: Differences In Spatial Characteristics Of Magnetic Susceptib...mentioning

confidence: 99%

Loess Strata Distribution Characteristics and Paleoclimate Spatial Pattern during the Last Interglacial in the Luohe River Basin

et al. 2023

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“…The paleoclimate information has been interpreted based on loess properties, such as grain size [1,[29][30][31] and magnetic susceptibility [32][33][34][35]. The paleoclimate signals recorded in loess might have been modified to varying degrees by post-depositional processes, such as pedogenesis, which is a weathering process, which occurs under relatively warm and humid conditions [17].…”

Section: Introductionmentioning

confidence: 99%

Reconstructing the Last 71 ka Paleoclimate in Northeast China by Integrating Typical Loess Sections

Li,

Brye,

Sun

et al. 2024

Quaternary

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Long-term continuous deposits and well-preserved thick loess sections are natural archives for the reconstruction of global climate change. However, the loess sections are often discontinuous owing to soil erosions and accumulations. This study aimed at reconstructing long-term continuous paleoclimatic records by integrating the target sections of two typical loess sequences in northeast (NE) China. One section, the Dajiugang (DJG) section, was investigated and sampled, and the Sanbahuo (SBH) section was used as the target for integrating and reconstructing the paleoclimate. Sedimentary, pedogenesis, and luminescence dating analyses were conducted to analyze the potentials for reconstructing the paleoclimate by integrating two typical loess sections. The results indicated that the paleoclimate records derived from the DJG section can be used to reconstruct the continuous paleoclimate of NE China by integrating them with the SBH section. The paleoclimate information inferred from the DJG section could impute paleoclimate data from 71 to 11.7 ka, which were missing in the SBH section. The paleoclimate of NE China generally consisted of three periods from 71 to 11.7 ka: cold and dry from 29 to 11.7 ka, alternately cold and warm from 57 to 29 ka, and warm and wet to cold and dry from 71 to 57 ka. Integrating the target loess sections can contribute to reconstructing regional long-term continuous paleoclimate records where discontinuous loess sequences occurred.

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“…Stratigraphy has expanded into several branches, such as petrostratigraphy, biostratigraphy, and climatostratigraphy (Layzell et al, 2017). The methods and indicators for exploring the age of strata have been simultaneously enriched, and radiocarbon, sample size, microsomal paleontology, and sporulation have become important indicators for the study of stratigraphic depositional sequences and paleoenvironmental evolution (Frieling and Sluijs, 2018;Frydas and Keupp, 2015;Wang et al, 2022;Zhang et al, 2020). Gu et al (2018) have comprehensively studied the evolution of the Quaternary sedimentary environment in the Han River basin by analyzing lithological, grain-size, and magnetic assemblages.…”

Section: Introductionmentioning

confidence: 99%

Update to the Quaternary Stratigraphic Division in Xiaoshao Plain, Zhejiang, China

Liu,

Xing,

Shao

et al. 2023

Journal of Coastal Research

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Response of grain-size components of loess-paleosol sequence to Quaternary climate in the Southern Loess Plateau, China

Cited by 8 publications

References 37 publications

Loess Strata Distribution Characteristics and Paleoclimate Spatial Pattern during the Last Interglacial in the Luohe River Basin

Loess Strata Distribution Characteristics and Paleoclimate Spatial Pattern during the Last Interglacial in the Luohe River Basin

Reconstructing the Last 71 ka Paleoclimate in Northeast China by Integrating Typical Loess Sections

Update to the Quaternary Stratigraphic Division in Xiaoshao Plain, Zhejiang, China

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