The sequence of Quaternary glaciation in the Bayan Har Mountains

Zhou, Shangzhe; Li, Jijun

doi:10.1016/s1040-6182(97)00011-6

Cited by 44 publications

(61 citation statements)

References 2 publications

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“…Landforms in the northern part of the study area, previously suggested to be marginal moraine features (Kuhle, 1989) and glacial valleys (Zhou and Li, 1998) are absent on our map. This is because we agree with interpretations of Lehmkuhl et al (1998) and Stroeven et al (In press), respectively, that these are non-glacial landforms related to tectonic processes.…”

Section: Completeness and Accuracy Of The Mapmentioning

confidence: 53%

“…Subsequent glacial reconstructions range from glaciers, restricted to valleys radiating from the highest mountain areas, to regional or plateau-wide ice sheets Lehmkuhl et al, 1998;Zheng and Rutter, 1998;Zhou and Li, 1998;Kuhle, 2003). For the last glaciation the leading inference is one of restricted valley glaciers Lehmkuhl et al, 1998;Zheng and Rutter, 1998;Zhou and Li, 1998). Particularly for older glaciations, however, there remains the possibility for significantly larger glacial extent.…”

Section: Introductionmentioning

confidence: 99%

“…Derbyshire et al, 1991;Shi, 1992;Shi et al, 1992;Hövermann et al, 1993;Rutter, 1995;Zhou et al, 2004;Ehlers and Gibbard, 2007). Based on studies of inferred glacial landforms and sediments (Zhou et al, 1994;Zhou, 1995), Zhou and Li (1998) presented a paleoglaciological reconstruction of the Bayan Har sector comprising four glacial configurations, two restricted to valleys, of proposed Marine oxygen Isotope Stage (MIS) 2 and 4 ages, and two also inundating parts of the surrounding plateau surface, of proposed MIS 6 and 12 ages. Except for the proposed plateau-scale ice sheet (Kuhle, 2004), the Huang He ice sheet is the most extensive Quaternary ice sheet proposed for the Tibetan Plateau.…”

Section: Introductionmentioning

confidence: 99%

“…There are glacial geomorphological overview maps which cover large parts of our study area (Zhou and Li, 1998;Kuhle, 2003) but detailed glacial geomorphological maps containing individual landforms only exist for the north-central part of Bayan Har Shan (Zheng and Wang, 1996, 4400 km 2 ) and for the Anyemaqen Shan (Wang, 1987, 1500 km 2 ; Figure 1). In addition, there are almost no radiometric constraints.…”

Section: Introductionmentioning

confidence: 99%

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Glacial geomorphology of the Bayan Har sector of the NE Tibetan Plateau

Heyman¹,

Hättestrand²,

Stroeven³

2008

Journal of Maps

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Abstract:We here present a detailed glacial geomorphological map covering 136,500 km 2 of the Bayan Har sector of the northeastern Tibetan Plateau -an area previously suggested to have nourished the most extensive Quaternary glaciers of the Tibetan Plateau. The map, presented at a scale of 1:650,000, is based on remote sensing of a 90 m SRTM digital elevation model and 15/30 m Landsat ETM+ satellite imagery. Seven landform types have been mapped; glacial valleys, glacial troughs, glacial lineations, marginal moraines, marginal moraine remnants, meltwater channels and hummocky terrain. A large number of glacial landforms exist, concentrated around mountain blocks protruding above the surrounding plateau area, testifying to former glacial activity. In contrast, large plateau areas of lower altitude lack glacial landforms. The mapped glacial geomorphology indicates multiple former glacial advances primarily by valley and piedmont glaciers, but lends no support to the hypothesis of ice sheet scale glaciation in the area. The presented glacial geomorphological map demonstrates the usefulness of remote sensing techniques for mapping the glacial geomorphology of the Tibetan Plateau, and it will be used for reconstructing the paleoglaciology of the Bayan Har sector of the northeastern Tibetan Plateau.

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Section: Completeness and Accuracy Of The Mapmentioning

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Glacial geomorphology of the Bayan Har sector of the NE Tibetan Plateau

Heyman¹,

Hättestrand²,

Stroeven³

2008

Journal of Maps

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“…Li et al (1991) mapped the 'extent of palaeoglaciation' of the northeastern Tibetan Plateau as being largely restricted to mountain areas, but in our current study area they additionally showed a 95 000 km 2 regional ice sheet (the Huang He ice sheet). Zhou et al (1994) and Zhou (1995) presented detailed studies of the Bayan Har glacial geology, including observations of glacial landforms such as U-shaped valleys, roche moutonnées and moraine ridges, and deposits of inferred glacial origin. Based mainly on these field observations, a palaeoglaciological reconstruction comprising four glacial stages was presented (Zhou and Li, 1998).…”

Section: Study Area and Previous Studiesmentioning

confidence: 99%

Palaeoglaciation of Bayan Har Shan, northeastern Tibetan Plateau: glacial geology indicates maximum extents limited to ice cap and ice field scales

Heyman

Stroeven

Alexanderson

et al. 2009

J Quaternary Science

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Key locations within an extensive area of the northeastern Tibetan Plateau, centred on Bayan Har Shan, have been mapped to distinguish glacial from non-glacial deposits. Prior work suggests palaeo-glaciers ranging from valley glaciers and local ice caps in the highest mountains to a regional or even plateau-scale ice sheet. New field data show that glacial deposits are abundant in high mountain areas in association with large-scale glacial landforms. In addition, glacial deposits are present in several locations outside areas with distinct glacial erosional landforms, indicating that the most extensive palaeo-glaciers had little geomorphological impact on the landscape towards their margins. The glacial geological record does indicate extensive maximum glaciation, with local ice caps covering entire elevated mountain areas. However, absence of glacial traces in intervening lowerlying plateau areas suggests that local ice caps did not merge to form a regional ice sheet on the northeastern Tibetan Plateau around Bayan Har Shan. No evidence exists for past ice sheet glaciation.

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The Quaternary evolutionary history, potential distribution dynamics, and conservation implications for a Qinghai–Tibet Plateau endemic herbaceous perennial, Anisodus tanguticus (Solanaceae)

Wan

Feng

Jiang

et al. 2016

Ecology and Evolution

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Various hypotheses have been proposed about the Quaternary evolutionary history of plant species on the Qinghai–Tibet Plateau (QTP), yet only a handful of studies have considered both population genetics and ecological niche context. In this study, we proposed and compared climate refugia hypotheses based on the phylogeographic pattern of Anisodus tanguticus (three plastid DNA fragments and nuclear internal transcribed spacer regions from 32 populations) and present and past species distribution models (SDMs). We detected six plastid haplotypes in two well‐differentiated lineages. Although all haplotypes could be found in its western (sampling) area, only haplotypes from one lineage occurred in its eastern area. Meanwhile, most genetic variations existed between populations (FST = 0.822). The SDMs during the last glacial maximum and last interglacial periods showed range fragmentation in the western area and significant range contraction in the eastern area, respectively, in comparison with current potential distribution. This species may have undergone intraspecific divergence during the early Quaternary, which may have been caused by survival in different refugia during the earliest known glacial in the QTP, rather than geological isolation due to orogenesis events. Subsequently, climate oscillations during the Quaternary resulted in a dynamic distribution range for this species as well as the distribution pattern of its plastid haplotypes and nuclear genotypes. The interglacial periods may have had a greater effect on A. tanguticus than the glacial periods. Most importantly, neither genetic data nor SDM alone can fully reveal the climate refugia history of this species. We also discuss the conservation implications for this important Tibetan folk medicine plant in light of these findings and SDMs under future climate models. Together, our results underline the necessity to combine phylogeographic and SDM approaches in future investigations of the Quaternary evolutionary history of species in topographically complex areas, such as the QTP.

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The sequence of Quaternary glaciation in the Bayan Har Mountains

Cited by 44 publications

References 2 publications

Glacial geomorphology of the Bayan Har sector of the NE Tibetan Plateau

Glacial geomorphology of the Bayan Har sector of the NE Tibetan Plateau

Palaeoglaciation of Bayan Har Shan, northeastern Tibetan Plateau: glacial geology indicates maximum extents limited to ice cap and ice field scales

The Quaternary evolutionary history, potential distribution dynamics, and conservation implications for a Qinghai–Tibet Plateau endemic herbaceous perennial, Anisodus tanguticus (Solanaceae)

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