caa a22 4500 475827287 CHVBK 20180406123832.0 cr unu---uuuuu 170329e20000601xx s 000 0 eng 10.1007/s005310050323 doi (NATIONALLICENCE)springer-10.1007/s005310050323 Geochemical compositional changes at the Pliocene-Pleistocene transition in fluviodeltaic deposits in the Tegelen-Reuver area (southeastern Netherlands) [Elektronische Daten] [D. J. Huisman, G. T. Klaver, A. Veldkamp, B. J. H. van Os] 2: O contents, which can be attributed to the Alpine source supplying fresh, sodic plagioclase-rich material instead of the local, strongly weathered sediments. Increasing K2O/Al2O3 can be attributed to a similar decrease in degree of weathering. However, this trend is disturbed by the loss of K from clay minerals during weathering in organic-rich layers. Local high TiO2 anomalies, caused by preferential sorting and concentration, are found in most Pliocene sections, but they are absent in the Upper Pliocene and Lower Pleistocene Alpine-derived deposits. This change is probably due to a change in the energy of the fluvial system. Finally, (pyrite-) S contents drop (siderite-) Fe contents rise. Micromorphological observations indicate that the Pliocene pyrite was formed when freshwater deposits were flooded with seawater during short-term events. The decrease in S, and the increase in siderite-Fe, can be attributed to decreasing marine influence, as a result of the marine regression at the Pliocene-Pleistocene transition. Springer-Verlag Berlin Heidelberg, 2000 Geochemistry nationallicence Clay mineralogy nationallicence Weathering nationallicence Diagenesis nationallicence Rhine nationallicence Facies nationallicence Huisman D. J. Wageningen Agricultural University, Laboratory for Soil Science and Geology, P.O. Box 37, NL-6700 AA Wageningen, The Netherlands Tel.: +31-30-2534162 Fax: +31-23-2535121 e-mail: h.huisman@nitg.tno.nl, NL aut Klaver G. T. NITG-TNO, Geological Survey of the Netherlands, p/a Utrecht University, Faculty of Earth Sciences, P.O. Box 80015, NL-3508 TA Utrecht, The Netherlands, NL aut Veldkamp A. Wageningen Agricultural University, Laboratory for Soil Science and Geology, P.O. Box 37, NL-6700 AA Wageningen, The Netherlands Tel.: +31-30-2534162 Fax: +31-23-2535121 e-mail: h.huisman@nitg.tno.nl, NL aut van Os B. J. H. NITG-TNO, Geological Survey of the Netherlands, p/a Utrecht University, Faculty of Earth Sciences, P.O. Box 80015, NL-3508 TA Utrecht, The Netherlands, NL aut https://doi.org/10.1007/s005310050323 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s005310050323 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Huisman D. J. Wageningen Agricultural University, Laboratory for Soil Science and Geology, P.O. Box 37, NL-6700 AA Wageningen, The Netherlands Tel.: +31-30-2534162 Fax: +31-23-2535121 e-mail: h.huisman@nitg.tno.nl, NL aut NATIONALLICENCE 700 1- Klaver G. T. NITG-TNO, Geological Survey of the Netherlands, p/a Utrecht University, Faculty of Earth Sciences, P.O. Box 80015, NL-3508 TA Utrecht, The Netherlands, NL aut NATIONALLICENCE 700 1- Veldkamp A. Wageningen Agricultural University, Laboratory for Soil Science and Geology, P.O. Box 37, NL-6700 AA Wageningen, The Netherlands Tel.: +31-30-2534162 Fax: +31-23-2535121 e-mail: h.huisman@nitg.tno.nl, NL aut NATIONALLICENCE 700 1- van Os B. J. H. NITG-TNO, Geological Survey of the Netherlands, p/a Utrecht University, Faculty of Earth Sciences, P.O. Box 80015, NL-3508 TA Utrecht, The Netherlands, NL aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer