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Victoria, Canada

Ballent S.C.,National University of La Plata | Whatley R.,3dB Research
Revue de Paleobiologie | Year: 2012

The principal area for the recovery of Argentinean Jurassic marine Ostracoda is the Neuquén Basin, a large feature that spans the provinces of Neuquén, La Pampa, Río Negro and Mendoza. The Jurassic succession is very complete but not all is marine, some being continental clastic, evaporitic and volcanic in origin. At some levels, ostracods are very diverse and abundant, while other levels demonstrate low diversity but very high abundance. Generally, there is an increase in diversity with time but this is not steady and there are several reversions to low diversity. Recent works in West Australia and offshore western Australia, in certain Madagascan basins and in Kutch and Rajasthan in India, together with detailed synopses and analysis of faunas in these localities, in Europe and, importantly in Argentina, allow a better understanding of the principal components of the Neuquén faunas. The bi-hemispherical nature of important elements of the fauna is very clear, with certain key species being known for example, from the famous Mochras borehole in North Wales and from Neuquén, and other localities in between (Oligocythereis? mochrasensis). Other taxa, important in the local scheme of things are endemic to the Neuquén Basin; still other Argentinian taxa exhibit the third component of the faunas, those with gondwanine connections. The number of genera and species occurring in the basin and also, in Africa, Australia, Madagascar and India is impressive and all these are clearly indicated in the paper. Lastly, a new dimension is revealed by comparing the stratigraphical occurrence of certain of the more pandemic species. A number have their earliest occurrences in Neuquén, suggesting its importance as a locus of evolution from which species migrated out to other parts of the globe. Source

Brewer P.A.,3dB Research | Bird G.,Bangor University | Macklin M.G.,Massey University
Applied Geochemistry | Year: 2015

Mitrovica, northern Kosovo, is the site of some of the highest Pb concentrations reported in human populations; exemplified by Pb concentrations in scalp hair of up to 130μgg-1 and widely-publicized of Pb-related ill-health and mortality amongst internally displaced populations. High human Pb burdens are accompanied by elevated concentrations of potentially harmful elements (PHEs) in soils and house dust within the city, which has a long history of mining and metallurgy. In this study enrichment-levels for PHEs in soils are quantified and compared to environmental quality guidelines and a statistically-derived estimation of background concentration. In addition, Pb isotopes (207Pb/206Pb, 208Pb/206Pb) are used to characterise the isotopic signatures of potential point sources of Pb and a mixing model employed to quantify the contribution of sources to Pb present in soils, house dust, and the scalp hair of children and young people. Pb isotopic evidence suggests that Pb in surface soils and house-dust is predominantly sourced from historical deposition of Pb-containing aerosols from metal smelting, with lower contributions from wind-blown dispersal of metalliferous waste. Pb present in scalp hair is interpreted as the result of non-occupational exposure and the ingestion and/or inhalation of Pb-enriched surface soil and house dust. This study represents one of the very few instances where this type of geochemical tracing technique has been successfully applied to definitively identify the source of Pb present within biological samples. The results of this study are of particular relevance to environmental management and highlight the human health risk posed by the legacy of now inactive mining and metallurgy in addition to the challenge posed in mitigating the risk posed by diffuse soil pollution. © 2015 Elsevier Ltd. Source

Sames B.,University of Vienna | Sames B.,Free University of Berlin | Whatley R.,3dB Research | Schudack M.E.,Free University of Berlin
Journal of Micropalaeontology | Year: 2010

The genus Praecypridea gen. nov. (Cypridoidea, Family Cyprideidae Martin, 1940) is described and thus far comprises four species: the type species Praecypridea acuticyatha (Schudack, 1998) comb. nov., Praecypridea postelongata (Oertli, 1957) comb, nov., Praecypridea suprajurassica (Mojon, Haddoumi & Charriére, 2009) comb. nov. and Praecypridea acuta (Moos, 1959 in Wicher, 1959) comb, nov. Representatives of the new genus have been described from the Middle to Late Jurassic of Europe, North America and Africa and the Early Cretaceous of South America, with other presumed representatives also occurring in the Early Cretaceous. Species of Praecypridea are considered to represent members of the ancestral lineage of the extinct genus Cypridea Bosquet, representatives of which flourished in non-marine habitats of latest Jurassic to Early Cretaceous age and account for the first period of abundance of the non-marine Cypridoidea. © 2010 The Micropalaeontological Society. Source

Harman International Industries Inc. and 3dB Research | Date: 2008-04-22

audio signal processors used for music; audio signal processing software used for music.

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