Orbital and Millennial-Scale Climate Variability over the Past 76 ka in the Western Tarim Basin, Northwest China

Zhang, Rui; Yin, Qiuzhen; Nai, Weihua; Wang, Zhixiang; Lu, Hao; Huang, Chunju; Gu, Yansheng; Li, Lin; Wang, Yusong; Liu, Linjing

doi:10.1007/s12583-020-1115-2

Cited by 4 publications

(6 citation statements)

References 43 publications

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“…The latest, most detailed and complete research results on the palaeoclimatic evolution in the study area come from Quaternary borehole KT11 in the Kashi depression area, northwest margin of the Tarim Basin (Figures 2b and 8), indicating that it is basically consistent with the evolution of the palaeoclimate in the hinterland and northeast margin of the Tarim Basin [32]. Overall, dry-cold climates have characteristics of high total organic carbon, finer grain size, lower magnetic susceptibility [61] and higher Rb/Sr values [62], as well as the vegetation type of steppe or sparse forest grassland (obtained by the analysis of sporopollen assemblage), whereas warm-humid climates have characteristics of low total organic carbon, coarser grain size, higher magnetic susceptibility, lower Rb/Sr values and vegetation types of coniferous broad-leaved mingled forest and grassland [63].…”

Section: Quaternary Palaeoclimatic Evolutionary Sequencementioning

confidence: 59%

“…From the late Pleistocene to the Holocene, the whole Tarim Basin entered a long-term dry-cold stage, whereas the Holocene was dominated by a warm-arid climate [30,39]. d,e) of borehole KT11, with its paleomagnetic age [32,33,64]. The lithology legend refers to Figures 3 and 5.…”

Section: Quaternary Palaeoclimatic Evolutionary Sequencementioning

confidence: 99%

“…The lithology legend refers to Figures 3 and 5. d,e) of borehole KT11, with its paleomagnetic age [32,33,64]. The lithology legend refers to Figures 3 and 5.…”

Section: Quaternary Palaeoclimatic Evolutionary Sequencementioning

confidence: 99%

“…The LGM (an interval with a range of 26.5 to 19.0 ka BP) was the coldest period of the LGP [75][76][77], corresponding to the deep-sea oxygen isotope MIS2 stage. To compensate for the errors caused by incomplete sediment outcropping or rough stratigraphic division in the study area and to better reflect the detailed climate change characteristics since the LGM, combined with the climate change since 12 ka BP in the Tarim River basin [78,79] and the results of the lake evolution and climate hydrology in the arid areas of Xinjiang [80,81], and the parameters in the borehole KT11 [82], we further subdivided the four evolutionary stages since 2.7 ka BP (see Table 6 for details); these results indicated the gradual aridification of the climate since the LGM in the study area [83,84], which provides effective evidence for a comprehensive and complete explanation of the controlling effect of palaeoclimate on the deep-cutting erosion of palaeochannels, the continuous iteration of alluvial plains, the formation of aquitards and the evolution of groundwater flow patterns in the study area. The existing pattern of the GFS in the catchment is the outcome of the overlapping and nesting of groundwater flow in different evolutionary periods under the action of various factors.…”

Section: Quaternary Palaeoclimatic Evolutionary Sequencementioning

confidence: 99%

“…Based on studies of lithological characteristics, thermoluminescence dating, palaeomagnetic reversal, magnetic susceptibility change and the Fe 2 O 3 content in the AK1 borehole, with a depth of 465.55 m, in the Lop Nur area, a reliable Quaternary stratigraphic and age boundary since the Pliocene has been established [30]. A study of Quaternary sedimentary facies and the climatic evolutionary sequence was carried out in the Kashi Sag, northwest margin of the Tarim Basin, via 800 m-deep drilling, and the coupling relationship between climate change in this area and global glacial-interglacial climate change was obtained [31,32].…”

Section: Introductionmentioning

confidence: 99%

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Evolution of the Groundwater Flow System since the Last Glacial Maximum in the Aksu River Basin (Northwest China)

Su,

Deng,

Nai

et al. 2023

Water

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Thoroughly investigating the evolution of groundwater circulation and its controlling mechanism in the Aksu River Basin, where human activities are intensifying and the groundwater environment is increasingly deteriorating, is highly urgent and important for promoting the theory, development and implementation of groundwater flow systems (GFSs) and protecting groundwater resources. Based on a detailed analysis of the sediment grain size distribution, chronology, electrofacies, glacial sedimentary sequence, palaeoclimate indicators and existing groundwater age, this paper systematically reconstructs the palaeosedimentary environment of the basin-scale aquifer system in the study area and scientifically reveals the evolutionary pattern and formation mechanism of the GFS. The results showed that the later period of the late Pleistocene experienced a rapid downcutting erosional event caused by tectonic uplift, and the sedimentary environment transitioned from a dry–cold deep downcutting environment in the Last Glacial Maximum (LGM) to a coarse-grained fast-filling fluvial facies sedimentary environment in the Last Glacial Deglaciation (LDP) as the temperature rose; then, it shifted to an environment of fine-grained stable alternating accumulation of fluvial facies and lacustrine facies that was dominated by the warm and arid conditions of the Holocene megathermal period (HMP); this process changed the previous river base level via erosion, glacier elongation or shortening and river level, thus resulting in a complex coupling relationship between the palaeosedimentary environment, palaeoclimate and basin GFS. Furthermore, the existing GFS pattern in the basin exhibits a vertically unconformable groundwater age distribution, which indicates that it is the outcome of the complex superposition of groundwater flow controlled by the palaeosedimentary environment in different periods. Therefore, neotectonic movement and climate fluctuation have jointly acted on the variation in the river level, resulting in the “seesaw” effect, thereby fundamentally controlling the strength of the driving force of groundwater and resulting in the gradual evolution of the GFS from the fully developed regional GFS pattern during the LGM to the current multihierarchy nested GFS pattern.

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Section: Quaternary Palaeoclimatic Evolutionary Sequencementioning

confidence: 59%

Section: Quaternary Palaeoclimatic Evolutionary Sequencementioning

confidence: 99%

“…The lithology legend refers to Figures 3 and 5. d,e) of borehole KT11, with its paleomagnetic age [32,33,64]. The lithology legend refers to Figures 3 and 5.…”

Section: Quaternary Palaeoclimatic Evolutionary Sequencementioning

confidence: 99%