2026-05-24T20:07:42Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/90292024-04-25T00:05:17Zcom_10259_9025com_10259_5086com_10259_2604com_10259.4_2560col_10259_9026col_10259.4_2561

00925njm 22002777a 4500 dc Bógalo Román, Mª Felicidad author Keller, P. author Pérez González, Alfredo author Gallardo, J. author Osete López, María Luisa author 1996 Soil profiles from 12 terraces of Plio-Pleistocene to Holocene age from the Tajo river in Central Spain were investigated on there rock magnetic properties. Systematic profiles were sampled in O. 1 m intervals from 24 fresh trenches of 2.5m depth. The soil profiles consist of an upper eluvial horizon (A, E), a intermediate illuvial horizon (B), and sometimes a lower horizon (C). Low and high frequency susceptibility (x), saturation IRM (SIRM), and anhysteretic remanent magnetization (ARM) measurements were performed out. The differences between the stable values of horizon B and the high values of the horizons A and E increase with the age of the soils. Comparison of the mean values of the B horizons for each terrace show low X values for the Holocene and the Late Pleistocene, a strong x increase during the Middle Pleistocene, and again low values for the Pliocene and Early Pleistocene. Magnetic parameters of soils show the palaeoenvironmental changes during this period of time. 0213-683X http://hdl.handle.net/10259/9029 Rock magnetic properties Palaeoenvironment Pleistocene Soils Estudio de las propiedades magnéticas en las terrazas del río Tajo: implicaciones paleoambientales