Geochemical differentiation of Quaternary sediments from the Pampean region based on soil phosphorus contents as detected in the early 20th century |
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| Affiliation: | 1. Federal Institute for Geosciences and Natural Resources, Stilleweg 2, 30655 Hannover, Germany;2. Federal Institute for Geosciences and Natural Resources, Branch Office Berlin, Wilhelmstrasse 25-30, 13593 Berlin, Germany;1. Institute of Geology and Mineral Exploration, 1 Spirou Louis St., Olympic Village, 13677 Acharnae, Athens, Hellas;2. Federal Institute for Geosciences and Natural Resources, Stilleweg 2, 30655 Hannover, Germany;3. Dipartimento di Scienze della Terra, dell''Ambiente e delle Risorse, Università di Napoli Federico II, Naples, Italy;4. Rio Tinto, 2 Eastbourne Terrace, London, W2 6LG England, United Kingdom |
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| Abstract: | Data obtained in the early 20th century on the total phosphorus (TP) content in soil materials from the Pampean region have been processed and plotted on maps of the region. Approximately 1200 subsoil data and 1400 surface horizon data obtained using the same analytical method, have been processed. According to differences in phosphorus content, several areas have been demarcated. Limits and characteristics of these areas have been correlated with data from the more recent literature regarding the P distribution and with both mineralogical and sedimentological information on surface materials. Results suggest that a confluence of sediments from different provenances (i.e. the Andean Range, the Pampean Hills, and the Brazilian Shield) is found in the Argentine Pampean region. |
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