Contribution of lateral processes to stone pavement formation in deserts inferred from clast orientation patterns

Dietze, Michael; Kleber, Arno

doi:10.1016/j.geomorph.2011.10.015

Cited by 25 publications

(48 citation statements)

References 45 publications

(83 reference statements)

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“…However, comparison of the percentage of small clasts found in pavement samples did not vary from local high points to local low points (Spearman rank order correlation, corrected 0.21, uncorrected 0.04, n = 100), nor do steeper slopes accumulate larger percentages of small gravels compared to flat pavements (Spearman rank order correlation, corrected 0.03, uncorrected ‐0.06, n = 118) (Wessa, ), suggesting that downslope movement of the smallest gravel clasts does not occur preferentially within pavement surfaces (Table ). Similar evidence for a lack of downslope movement was indicated by a lack of relevant clast orientation of larger pavement clasts (Adelsberger & Smith, ), although potential bimodality in clast orientation was not assessed as part of this study (Dietze & Kleber, ).…”

Section: Resultssupporting

confidence: 59%

Desert Pavement Disturbance and Artifact Taphonomy: A Case Study from the Eastern Libyan Plateau, Egypt

et al. 2013

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. However, the smallest (length ≤2.5 cm) archaeological fragments are recovered at a much lower rate on this desert pavement surface than expected given comparable data from lithic assemblages in cave and shelter contexts in France. Excavation of archaeological contexts on the Libyan Plateau reveals the loss of small artifact fragments into the subsurface due to aeolian accumulation of silts, whereas geomorphic examination of desert pavement surfaces suggests a potential for relatively isolated bioturbation as a source of lateral and vertical disturbance of desert pavement surfaces over small areas. Archaeologists should be aware of the potential for long-term assemblage stability as well as small artifact burial in surficial desert pavement contexts. C 2013 Wiley Periodicals, Inc.

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Section: Resultssupporting

confidence: 59%

Desert Pavement Disturbance and Artifact Taphonomy: A Case Study from the Eastern Libyan Plateau, Egypt

et al. 2013

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“…Stone lines ( Figure 3A) cluster at two typical depths, 10 to 20 and 50 to 60 cm, and exhibit preferred bimodal alignment patterns (rose diagrams in Figure 2; after Dietze and Kleber (2012)). The basalt clasts are virtually unweathered ( Figure 3B).…”

Section: Sedimentological Resultsmentioning

confidence: 99%

“…Vegetation is concentrated in drainage channels. The stone pavements at the investigated sites are well-varnished, tightly packed and composed of clasts with mean diameters of 53 ± 11 mm (1 σ; (Dietze and Kleber, 2012)). Some clasts reach diameters of more than 200 mm.…”

Section: Study Areamentioning

confidence: 99%

“…The soil matrix is engulfed with masses, filaments, Figure 2: Morphology, texture and end-member scores of individual soil-sediment sections. Rose diagrams show clast length axes orientations for modern and buried stone pavements and for clast-rich sections (number of samples provided in rose diagrams, data handling according to Dietze and Kleber (2012)). Grain-size map indicates high (blue) and low (orange) abundances of grain-size fractions.…”

Section: Section Correlation and Composite Sectionmentioning

confidence: 99%

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Environmental history recorded in aeolian deposits under stone pavements, Mojave Desert, USA

Dietze

Lomax

et al. 2016

Quat. res.

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Reconstructing the evolution of arid landscapes is challenged by limited availability of appropriate environmental archives. A wide-spread surface feature -stone pavement -traps aeolian fines and forms a special accretionary archive. Seven stone pavement-covered sections on basalt flows in the eastern Mojave Desert are condensed to a composite section, comprising five sedimentological units, supported by an OSL-based chronology. Three of the units are of accretionary nature and each is covered by a stone pavement. They were deposited >50.9-36.6 ka, <36.6-14.2 ka and <14.2 ka and are intimately coupled with the history of nearby Lake Mojave, which advances the current picture of regional aeolian activity. End-member modelling analysis of grain-size distributions yielded seven sediment transport regimes. The accretionary system operates in two modes: A) episodic formation of a stone pavement by lateral processes once a vesicular horizon has formed on a barren surface and B) accretion of dust and eventually burial of the clast layer. These findings improve current concepts about stone pavement evolution and their environmental proxy function in arid landscapes. Stone pavement-covered accretionary deposits are a new key archive that allows quantifying the relative importance of dust accretion, slope processes, soil formation and vegetation cover.

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“…This concept is nowadays widely accepted for desert pavement formation (cf. Dietze and Kleber, 2012). It suggests that gravel surfaces trap aeolian particles that accumulate below them forming an accretionary mantle of aeolian fines, contradicting the common concept of stratigraphy.…”

Section: Implications Of the Gravel Cover And Lack Of Holocene Agesmentioning

confidence: 99%

Late Quaternary aeolian sand deposition sustained by fluvial reworking and sediment supply in the Hexi Corridor — An example from northern Chinese drylands

et al. 2015

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Contribution of lateral processes to stone pavement formation in deserts inferred from clast orientation patterns

Cited by 25 publications

References 45 publications

Desert Pavement Disturbance and Artifact Taphonomy: A Case Study from the Eastern Libyan Plateau, Egypt

Desert Pavement Disturbance and Artifact Taphonomy: A Case Study from the Eastern Libyan Plateau, Egypt

Environmental history recorded in aeolian deposits under stone pavements, Mojave Desert, USA

Late Quaternary aeolian sand deposition sustained by fluvial reworking and sediment supply in the Hexi Corridor — An example from northern Chinese drylands

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