Character, Rates, and Environmental Significance of Holocene Dust Accumulation in Archaeological Hilltop Ruins in the Southern Levant

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dc.contributor.author Lucke, Bernhard
dc.contributor.author Roskin, Joel
dc.contributor.author Vanselow, Kim André
dc.contributor.author Bruins, Hendrik J.
dc.contributor.author Abu-Jaber, Nizar
dc.contributor.author Deckers, Katleen
dc.contributor.author Lindauer, Susanne
dc.contributor.author Porat, Naomi
dc.contributor.author Reimer, Paula J.
dc.contributor.author Bäumler, Rupert
dc.contributor.author Erickson-Gini, Tali
dc.contributor.author Kouki, Paula
dc.date.accessioned 2019-04-29T10:49:17Z
dc.date.available 2019-04-29T10:49:17Z
dc.date.issued 2019-04-24
dc.identifier.citation Lucke, B.; Roskin, J.; Vanselow, K.A.; Bruins, H.J.; Abu-Jaber, N.; Deckers, K.; Lindauer, S.; Porat, N.; Reimer, P.J.; Bäumler, R.; Erickson-Gini, T.; Kouki, P. Character, Rates, and Environmental Significance of Holocene Dust Accumulation in Archaeological Hilltop Ruins in the Southern Levant. Geosciences 2019, 9, 190.
dc.identifier.uri http://hdl.handle.net/10138/301330
dc.description.abstract Loess accumulated in the Negev desert during the Pleistocene and primary and secondary loess remains cover large parts of the landscape. Holocene loess deposits are however absent. This could be due low accumulation rates, lack of preservation, and higher erosion rates in comparison to the Pleistocene. This study hypothesized that archaeological ruins preserve Holocene dust. We studied soils developed on archaeological hilltop ruins in the Negev and the Petra region and compared them with local soils, paleosols, geological outcrops, and current dust. Seven statistically modeled grain size end-members were identified and demonstrate that the ruin soils in both regions consist of mixtures of local and remote sediment sources that differ from dust compositions deposited during current storms. This discrepancy is attributed to fixation processes connected with sediment-fixing agents such as vegetation, biocrusts, and/or clast pavements associated with vesicular layers. Average dust accretion rates in the ruins are estimated to be ~0.14 mm/a, suggesting that ~30% of the current dust that can be trapped with dry marble dust collectors has been stored in the ruin soils. Deposition amounts and grain sizes do not significantly correlate with wind intensity. However, precipitation may have contributed to dust accretion. A snowstorm in the Petra region delivered a significantly higher amount of sediment than rain or dry deposition. Snowfall dust had a unique particle size distribution relatively similar to the ruin soils. Wet deposition and snow might catalyze dust deposition and enhance fixation by fostering vegetation and crust formation. More frequent snowfall during the Pleistocene may have been an important mechanism of primary loess deposition in the southern Levant.
dc.publisher Multidisciplinary Digital Publishing Institute
dc.title Character, Rates, and Environmental Significance of Holocene Dust Accumulation in Archaeological Hilltop Ruins in the Southern Levant
dc.date.updated 2019-04-29T10:49:17Z
dc.type.uri http://purl.org/eprint/entityType/JournalArticle
dc.type.uri http://purl.org/eprint/entityType/Expression
dc.type.uri http://purl.org/eprint/entityType/Expression

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