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Showing results for ironstones
Search for Ironstone S instead (1 results)
Strong evidence for a weakly oxygenated ocean-atmosphere system during the Proterozoic.
Wang C, Lechte MA, Reinhard CT, Asael D, Cole DB, Halverson GP, Porter SM, Galili N, Halevy I, Rainbird RH, Lyons TW, Planavsky NJ. Wang C, et al. Proc Natl Acad Sci U S A. 2022 Feb 8;119(6):e2116101119. doi: 10.1073/pnas.2116101119. Proc Natl Acad Sci U S A. 2022. PMID: 35101984 Free PMC article.
However, basic aspects of this history are still debated-foremost oxygen (O(2)) levels in the oceans and atmosphere during the billion years leading up to the rise of algae and animals. Here we use isotope ratios of iron (Fe) in ironstones-Fe-rich sedimentary rocks deposit …
However, basic aspects of this history are still debated-foremost oxygen (O(2)) levels in the oceans and atmosphere during the billion years …
Mineral evolution and processes of ferruginous microbialite accretion - an example from the Middle Eocene stromatolitic and ooidal ironstones of the Bahariya Depression, Western Desert, Egypt.
Salama W, El Aref MM, Gaupp R. Salama W, et al. Geobiology. 2013 Jan;11(1):15-28. doi: 10.1111/gbi.12011. Epub 2012 Nov 1. Geobiology. 2013. PMID: 23113844
Peritidal ferruginous microbialites form the main bulk of the Middle Eocene ironstone deposits of the Bahariya Depression, Western Desert, Egypt. ...
Peritidal ferruginous microbialites form the main bulk of the Middle Eocene ironstone deposits of the Bahariya Depression, Western De …
Bioaccessibility of arsenic in soils developed over Jurassic ironstones in eastern England.
Palumbo-Roe B, Cave MR, Klinck BA, Wragg J, Taylor H, O'Donnell KE, Shaw RA. Palumbo-Roe B, et al. Environ Geochem Health. 2005 Apr;27(2):121-30. doi: 10.1007/s10653-005-0128-1. Environ Geochem Health. 2005. PMID: 16003580
Jurassic ironstones outcropping over parts of eastern England give rise to soils with arsenic concentrations in excess of the UK soil guideline value of 20 mg kg(-1) for residential areas. Total arsenic concentrations were determined for 73 ironstone derived soils a …
Jurassic ironstones outcropping over parts of eastern England give rise to soils with arsenic concentrations in excess of the UK soil …
The Insula: A Brain Stimulation Target for the Treatment of Addiction.
Ibrahim C, Rubin-Kahana DS, Pushparaj A, Musiol M, Blumberger DM, Daskalakis ZJ, Zangen A, Le Foll B. Ibrahim C, et al. Front Pharmacol. 2019 Jul 2;10:720. doi: 10.3389/fphar.2019.00720. eCollection 2019. Front Pharmacol. 2019. PMID: 31312138 Free PMC article. Review.
Arsenic anomalies in soils and rocks occurring in the southwestern part of the Grand Duchy of Luxembourg.
Claes H, Cappuyns V, Swennen R, Meyer R. Claes H, et al. J Hazard Mater. 2021 Jun 5;411:124696. doi: 10.1016/j.jhazmat.2020.124696. Epub 2020 Nov 28. J Hazard Mater. 2021. PMID: 33482502
Several rock types in southern Luxembourg (laterally continuous into Northern France and Southern Belgium) contain elevated potentially toxic element concentrations. Toarcian and Aalenian Minette ironstones, and soils on top, possess high As concentrations (average of ~100 …
Several rock types in southern Luxembourg (laterally continuous into Northern France and Southern Belgium) contain elevated potentially toxi …
Authigenic iron oxide proxies for marine zinc over geological time and implications for eukaryotic metallome evolution.
Robbins LJ, Lalonde SV, Saito MA, Planavsky NJ, Mloszewska AM, Pecoits E, Scott C, Dupont CL, Kappler A, Konhauser KO. Robbins LJ, et al. Geobiology. 2013 Jul;11(4):295-306. doi: 10.1111/gbi.12036. Epub 2013 Apr 22. Geobiology. 2013. PMID: 23601652
Here, we explore enrichments in paleomarine Zn as recorded by authigenic iron oxides including Precambrian iron formations, ironstones, and Phanerozoic hydrothermal exhalites. This compilation of new and literature-based iron formation analyses track dissolved Zn abundance …
Here, we explore enrichments in paleomarine Zn as recorded by authigenic iron oxides including Precambrian iron formations, ironstones …
Gold deposit type and implication for exploration in the Abiete-Toko Gold District, South Cameroon: constraint from morphology and microchemistry of alluvial gold grains.
Kouankap Nono GD, Fai Bongsiysi E, Azinwi Tamfuh P, Nyangono Abolo AJ, Fomekong Kehding B, Fontem Kibong N, Suh EC. Kouankap Nono GD, et al. Heliyon. 2021 Apr 9;7(4):e06758. doi: 10.1016/j.heliyon.2021.e06758. eCollection 2021 Apr. Heliyon. 2021. PMID: 33898845 Free PMC article.
Exploration operations must target fractures and contact zones between ironstones, felsic gneiss and greenstones. Soil sampling is not recommended in this orogenic gold district due to the very thick and transported nature of the weathering mantle. ...
Exploration operations must target fractures and contact zones between ironstones, felsic gneiss and greenstones. Soil sampling is no …
Geology and geochemistry of paleosols developed on the Hekpoort Basalt, Pretoria Group, South Africa.
Rye R, Holland HD. Rye R, et al. Am J Sci. 2000 Feb;300(2):85-141. doi: 10.2475/ajs.300.2.85. Am J Sci. 2000. PMID: 11543500
The presence of apparent rip-up clasts of the paleosol in the overlying ironstones of the Strubenkop Formation in the cores from Bank Break makes it very unlikely that most of the alteration was a result of interactions with hydrothermal fluids. ...
The presence of apparent rip-up clasts of the paleosol in the overlying ironstones of the Strubenkop Formation in the cores from Bank …
87 results