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patine désertique

desert varnish

agriculture, sylviculture et pêche - iate.europa.eu

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Desert varnish as an indicator of modern-day air pollution in southern nevadaRock varnish, often called desert varnish, is a slow-growing, manganese-rich coating that accumulates on exposed rock surfaces....

général - core.ac.uk - PDF: digitalscholarship.unlv.edu

Supplement_for_hol_777075 – supplemental material for growth of desert varnish on petroglyphs from jubbah and shuwaymis, ha’il region, saudi arabiaSupplemental material, Supplement_for_HOL_777075 for Growth of desert varnish on petroglyphs from Jubbah and Shuwaymis, Ha’il region, Saudi Arabia by Dorothea S Macholdt, Abdullah M Al-Amri, Husam T Tuffaha, Klaus Peter Jochum and Meinrat...

PDF: figshare.com

Biogeological analysis of desert varnish using portable raman spectrometerspeer reviewedDesert varnishes are thin, dark mineral coatings found on some rocks in arid or semi-arid environments on Earth....

PDF: orbi.uliege.be

Application of field portable-xrf to the analysis of desert varnish samples in areas impacted by coal-fired power plantsDesert varnish samples were collected near two coal-fired power plants to determine if the varnish contained a record of recent air pollution....

PDF: digitalscholarship.unlv.edu

Distribution of desert varnish in arizonaDesert varnish is the dark coat of clay and ferromanganese oxides developed on exposed rock surfaces in arid regions....

PDF: hdl.handle.net