Título:
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Interactions between grain size and composition of sediments: two examples
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Autor/a:
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Eynatten, Hilmar von; Tolosana Delgado, Raimon; Triebold, S.; Zack, T.
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Otros autores:
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Mateu i Figueras, Glòria; Barceló i Vidal, Carles; Universitat de Girona. Departament d’Informàtica i Matemàtica Aplicada |
Abstract:
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Two contrasting case studies of sediment and detrital mineral composition are investigated in order to outline interactions between chemical composition and grain size. Modern glacial sediments exhibit a strong dependence of the two parameters due to the preferential enrichment of mafic minerals, especially biotite, in the fine-grained fractions. On the other hand, the composition of detrital heavy minerals (here: rutile) appears to be not systematically related to grain-size, but is strongly controlled by location, i.e. the petrology of the source rocks of detrital grains. This supports the use of rutile as a well-suited tracer mineral for provenance studies. The results further suggest that (i) interpretations derived from whole-rock sediment geochemistry should be flanked by grain-size observations, and (ii) a more sound statistical evaluation of these interactions require the development of new tailor-made statistical tools to deal with such so-called two-way compositions |
Abstract:
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Geologische Vereinigung; Institut d’Estadística de Catalunya; International Association for Mathematical Geology; Patronat de l’Escola Politècnica Superior de la Universitat de Girona; Fundació privada: Girona, Universitat i Futur; Càtedra Lluís Santaló d’Aplicacions de la Matemàtica; Consell Social de la Universitat de Girona; Ministerio de Ciencia i Tecnología.cat |
Fecha de creación:
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01-04-2009 |
Materia(s):
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-Sedimentologia |
Derechos:
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Consulteu les condicions d'ús d'aquest document en el repositori original:http://hdl.handle.net/10256/703 |
Tipo de documento:
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Objeto de conferencia |
Editor:
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Universitat de Girona. Departament d’Informàtica i Matemàtica Aplicada
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