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Title: Aeolian influx and related environmental conditions on Gran Canaria during the early Pleistocene
Authors: Menéndez González, Inmaculada 
Mangas Viñuela, José 
Tauler, Esperança
Barrón, Vidal
Torrent, José
Betancort, Juan F.
Santana del Pino, Ángelo 
Recio, José Manuel
Quevedo-González, Luis A.
Alonso Bilbao, Ignacio 
Méndez-Ramos, Jorge
UNESCO Clasification: 250607 Geomorfología
250618 Sedimentología
120903 Análisis de datos
240401 Bioestadística
Keywords: Saharan dust
Dust deposits
Canary Islands, et al
Issue Date: 2019
Journal: Quaternary Research 
Conference: International Symposium on Eolian Dynamics, Paleosols and Environmental Changes in Drylands
Abstract: The island of Gran Canaria is regularly affected by dust falls due to its proximity to the Saharan desert. Climatic oscillations may affect the Saharan dust input to the island. Geochemical, mineralogical, and textural analysis was performed on a well-developed and representative early Pleistocene paleosol to examine Saharan dust contribution to Gran Canaria. Significant and variable Saharan dust content was identified in addition to weathering products such as iron oxides and clay minerals. Variations in quartz and iron oxide concentrations in the paleosol likely reflect different Saharan dust input in more/less-contrasted rhexistasic/biostatic climatic conditions. Linking the quartz content in Canarian soils, the Ingenio paleosol, and two Canarian loess-like deposits to different ages from the Quaternary, we hypothesized that the dust input should be lower (about 33-38%) throughout the early to middle Pleistocene than during the late Quaternary. The Saharan dust input to the Gran Canaria profile in the Pleistocene persisted in spite of climatic variations.
ISSN: 0033-5894
DOI: 10.1017/qua.2018.64
Source: Quaternary Research [ISSN 0033-5894], v. 91 (1), p. 35-50
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