Character, rates, and environmental significance of holocene dust accumulation in archaeological hilltop ruins in the southern levant

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Lucke B, Roskin J, Vanselow K, Bruins HJ, Abu-Jaber N, Deckers K, Lindauer S, Porat N, Reimer PJ, Bäumler R, Erickson-Gini T, Kouki P
Zeitschrift: Geosciences
Jahr der Veröffentlichung: 2019
Band: 9
Heftnummer: 4
ISSN: 2076-3263


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.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Bäumler, Rupert Prof. Dr.
Professur für Geographie
Lucke, Bernhard PD Dr.
Institut für Geographie
Vanselow, Kim Dr. rer. nat.
Institut für Geographie


Einrichtungen weiterer Autorinnen und Autoren

Ben-Gurion University of the Negev (BGU) / אוניברסיטת בן-גוריון בנגב
Curt-Engelhorn-Zentrum Archäometrie gGmbH
Eberhard Karls Universität Tübingen
Geological Survey of Israel
German-Jordanian University (GJU) / الجامعة الألمانيه الأردنية
Helsingin yliopisto / University of Helsinki
IAA - Israel Antiquities Authority
Queen's University
University of Haifa / אוניברסיטת חיפה


Zitierweisen

APA:
Lucke, B., Roskin, J., Vanselow, K., Bruins, H.J., Abu-Jaber, N., Deckers, K.,... Kouki, P. (2019). Character, rates, and environmental significance of holocene dust accumulation in archaeological hilltop ruins in the southern levant. Geosciences, 9(4). https://dx.doi.org/10.3390/geosciences9040190

MLA:
Lucke, Bernhard, et al. "Character, rates, and environmental significance of holocene dust accumulation in archaeological hilltop ruins in the southern levant." Geosciences 9.4 (2019).

BibTeX: 

Zuletzt aktualisiert 2019-28-05 um 15:08