RT Journal Article
T1 Estudio textural y mineralógico de rizocreciones en los suelos terciarios de la cuenca del río Amarguillo (Toledo)
T1 Textural and mineralogical analysis of the rizocretions in the tertiary soils of the Amarguillo river basin (Toledo)
A1 Potenciano De Las Heras, Ángela
A1 Marfil Pérez, Rafaela
A1 Garzón Heydt, Guillermina
AB The paleosoils of the Miocene from the Amarguillo river basin show an important development of edaphic features. These are principally argillaceous fillings of old root casts. These rizocretions show several different textures of cements such as radial-fibrous calcite, sparry and microstalactitic. They also show some argillaceous aggregates, Fe-Mn and Ti oxides in addition to other detrital grains. The characteristics of these fillings are due to the activity related to the flow of the soil porewater and the biologic control of some of these processes. Barite idiomorphic crystals are authigenic minerals growing in some of the rizocretions, which indicate excepcionally dry climatic conditions during determinatedperiods of the soil development. The paleosoils studied and classified as alfisols and ultisols, had a shallow burial and belong to time periods with scarce precipitations and alkaline-saline porewater flow.
PB Sociedad Geológica de España
SN 0213-683X
YR 1997
FD 1997
LK https://hdl.handle.net/20.500.14352/121188
UL https://hdl.handle.net/20.500.14352/121188
LA spa
NO Potenciano de las Heras, Á., Marfil Pérez, R. y Garzón Heydt, G. (1997) «Estudio textural y mineralógico de rizocreciones en los suelos terciarios de la cuenca del río Amarguillo (Toledo)», Geogaceta, 22, pp. 161-164.
NO 22ª Sesión Científica, Bilbao 1997.
NO Dirección General de Investigación Cientı́fica y Técnica (España)
DS Docta Complutense
RD 22 dic 2025