Eight yardang types in Central Asia

Halimov, Mustafa; Fezer, Fritz

doi:10.1127/zfg/33/1989/205

Cited by 52 publications

(4 citation statements)

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“…They were formed as a result of the combined action of tectonic uplift, wind, running water and gravity on incompletely consolidated Quaternary fluvial and lacustrine sediments (Qinghe et al 2011 ). Halimov and Fezer ( 1989 ) attempted to identify different stages of yardang development. Dong (Zhibao et al 2012 ) proposed that the development of yardangs in the Kumtagh Desert passed through 4 stages, namely, embryonic, adolescent, mature, and recession.…”

Section: Discussionmentioning

confidence: 99%

Promoting Geotourism in Dunhuang UNESCO Global Geopark

Cai

Han

et al. 2023

Geoheritage

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Geoparks in China have always overlapped with many other tourism branding schemes. It is unclear whether people are familiar with the UNESCO Global Geopark (UGGp) label in a place in which many tourism brands and abundant resources exist. This article relies on data collected and interviews conducted in the Dunhuang UGGp to focus on tourists’ cognition, perception and satisfaction and to analyse their understanding of geotourism and participation in tourism activities. We suggest that the administration of Dunhuang UGGp change the schedule of tour routes, highlight geotourism, and foster the popularization of science and technology (PST) through activities within the geopark that support inquiry-based learning and facilitate geointerpretation and lively learning.

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Section: Discussionmentioning

confidence: 99%

Promoting Geotourism in Dunhuang UNESCO Global Geopark

Cai

Han

et al. 2023

Geoheritage

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“…Typical phenomena of deflation processes in source areas are stony desert pavement surfaces (Figure 3) as residuals of wind erosion (Dietze et al 2016) and aeolian landscapes with so-called yardangs (Halimov and Fezer 1989), in the shape of rocks and rocky ridges formed predominately by wind (Figure 4).…”

Section: Effects Of Airborne Particle Input On Landmentioning

confidence: 99%

Causes and Effects of Sand and Dust Storms: What Has Past Research Taught Us? A Survey

Opp

Groll

Abbasi

et al. 2021

JRFM

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Barren ground and sites with low coverage by vegetation (e.g., dunes, soil surfaces, dry lakes, and riverbeds) are the main source areas of sand and dust storms (SDS). The understanding of causes, processes (abrasion, deflation, transport, deposition), and influencing factors of sandy and dusty particles moving by wind both in the boundary layer and in the atmosphere are basic prerequisites to distinguish between SDS. Dust transport in the atmosphere modulates radiation, ocean surface temperature, climate, as well as snow and ice cover. The effects of airborne particles on land are varied and can cause advantages and disadvantages, both in source areas and in sink or deposition areas, with disturbances of natural environments and anthropogenic infrastructure. Particulate matter in general and SDS specifically can cause severe health problems in human respiratory and other organs, especially in children. Economic impacts can be equally devastating, but the costs related to SDS are not thoroughly studied. The available data show huge economic damages caused by SDS and by the mitigation of their effects. Management of SDS-related hazards utilizes remote sensing techniques, on-site observations, and protective measures. Integrated strategies are necessary during both the planning and monitoring of these measures. Such integrated strategies can be successful when they are developed and implemented in close cooperation with the local and regional population and stakeholders.

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“…The yardang field in the Qaidam Basin (QB), with an area of 3.88 × 10 4 km 2 , is the largest one on the Earth (Halimov and Fezer, 1989), and its extreme environments (high, cold, windy, arid and low pressure) make it an ideal terrestrial analogue site for aeolian geomorphologic studies on the Mars (Xiao et al, 2017, Anglés andLi, 2017;Wang et al, 2018). These yardangs indicate a transition from lacustrine to wind-eroded condition Rohrmann et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Post-IR Irsl Chronology of Paleo-Lacustrine Sediments from Yardangs in the Qaidam Basin, NE Tibetan Plateau

Ding

Lai

et al. 2021

Geochronometria

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The Qaidam Basin preserves the largest Yardang field on Earth, and yardangs are intriguing landforms for studies of the paleo-environment and aeolian processes. Formation of yardangs involved both the initial lacustrine deposition and the subsequent wind-erosion processes. However, the timings of both processes in the Qaidam Basin are still controversial due to limited age data and unsuitable dating methodology. In this paper, we first compared two optical dating methods to determine the suitable one for the study area, then investigated the geomorphic processes based on the new ages. Two-step post-IR IRSL (pIRIR) and multi-elevated-temperature pIRIR (MET-pIRIR) methods of feldspar, were applied to date lacustrine sediments on the top parts of yardangs to decipher the transition time from depositional to an erosional environment. Comparisons of the two methods demonstrated that the influence from anomalous fading was very minimal thus negligible for MET-pIRIR method, as proved by the De plateau between MET-pIRIR250 and MET-pIRIR290; while the pIR50IR250 signals suffered from fading obviously, which was difficult to be corrected due to the high De close to saturation. Consequently, the chronology in this study was based on the MET-pIRIR250 method, potentially offering reliable ages of over 200 ka. Seven MET-pIRIR250 ages of 201–336 ka suggested that a mega-Qaidam Lake (>2714 m a.s.l. on Google Earth) maintained until Marine Isotopic Stage (MIS) 7. The absence of sediments since ca. 200 ka implied wind-erosion and yardang formation since MIS6. This transition from lacustrine to a wind-erosion environment was interpreted as a response to the glacial-interglacial scale climatic changes.

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Eight yardang types in Central Asia

Cited by 52 publications

References 0 publications

Promoting Geotourism in Dunhuang UNESCO Global Geopark

Promoting Geotourism in Dunhuang UNESCO Global Geopark

Causes and Effects of Sand and Dust Storms: What Has Past Research Taught Us? A Survey

Post-IR Irsl Chronology of Paleo-Lacustrine Sediments from Yardangs in the Qaidam Basin, NE Tibetan Plateau

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