| Titre | Biogeochemical studies of metal-tolerants plants from southern Morocco |
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| Auteur | Dunn, C E; Brooks, R R; Edmondson, J; Leblanc, M; Reeves, R D |
| Source | Journal of Geochemical Exploration vol. 56, no. 1, 1996 p. 13-22, https://doi.org/10.1016/0375-6742(96)00007-6 |
| Année | 1996 |
| Séries alt. | Commission géologique du Canada, Contributions aux publications extérieures 1996225 |
| Éditeur | Elsevier BV |
| Document | publication en série |
| Lang. | anglais |
| DOI | https://doi.org/10.1016/0375-6742(96)00007-6 |
| Media | papier; en ligne; numérique |
| Formats | pdf |
| Région | Bou Azzer; Bleïda |
| Lat/Long OENS | -8.0000 -6.0000 31.0000 30.0000 |
| Sujets | levés biochimiques; levés géobotaniques; géochimie du sol; géochimie de l'arsenic; géochimie du brome; géochimie du cobalt; géochimie du chrome; géochimie du cuivre; géochimie du molybdène; géochimie du
nickel; géochimie de l'or; lithologie; Farsetie Aegyptie; Plante; géochimie; pédologie; Nature et environnement; Quaternaire |
| Illustrations | analyses; croquis cartographiques |
| Résumé | (disponible en anglais seulement)
An expedition to Southern Morocco was undertaken to study and collect the poorly documented metal-tolerant flora of the Bou Azzer region. The areas visited are
underlain by ultramafic rocks with associated cobalt-nickel arsenide mineralization and chromium carbonates (Bou Azzer), and by volcano-sedimentary rocks with associated copper sulphide mineralization (Bléida). Biogeochemical studies were made of
metals in many species, of which the five most common are Anvillea garcinii subsp. radiata, Ononis natrix (goat-root), Laiandula multifidia (lavender), Convolaulus trabutianus (morning-glory), and Artemisia herba-alba (sagebrush). Results show
differences in the ability of each species to accumulate metals. Ononis concentrates most of the ore-forming elements to highest levels. However, because of its more widespread occurrence, Anuillea is a more appropriate sample medium for
biogeochemical surveys. From chemical analysis of its stems, zones of concealed mineralization can be identified where conventional soil analysis is less definitive. |
| GEOSCAN ID | 207865 |
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