Artículo
Pedosedimentary development of part of a Late Quaternary loess-palaeosol sequence in northwest Argentina
Kemp, Rob A.; King, Matthew; Toms, Phillip; Derbyshire, Edward; Sayago, Jose Manuel
; Collantes, Mirian Mabel
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Fecha de publicación:
12/2004
Editorial:
John Wiley & Sons Ltd
Revista:
Journal Of Quaternary Science
ISSN:
0267-8179
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The field properties, magnetic susceptibility, particle size, calcium carbonate content, soil micromorphology and optical luminescence ages of the upper 6.1 m and lowermost 4.7 m of the 45 m loess-palaeosol sequence at El Lambedero in the Tafí del Valle region of Tucumán Province (Sierras Pampeanas, northwest Argentina) have been used to set up a partial stratigraphy and chronology, as well as a basic pedosedimentary model of loess accumulation, palaeosol development, reworking and erosion for the site. The minimum ages derived from the basal part of the section suggest that loess began to accumulate some time before 165 ka. A thick and well-developed pedocomplex in the upper profile is correlated with at least the latter part of marine isotope stage (MIS) 5, whereas the overlying palaeosol may be attributable to pedogenic activity during MIS 3. The absence of material younger than 33 ka close to the surface of this rounded spur landform is probably the result of either non-deposition or erosional stripping in response to climatic change, or episodic uplift in this seismically active region. © 2004 John Wiley and Sons, Ltd.
Palabras clave:
ARGENTINA
,
LOESS-PALAEOSOL
,
LUMINESCENCE AGES
,
PEDOSEDIMENTARY DEVELOPMENT
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Identificadores
Colecciones
Articulos(CCT - NOA SUR)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NOA SUR
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NOA SUR
Citación
Kemp, Rob A.; King, Matthew; Toms, Phillip; Derbyshire, Edward; Sayago, Jose Manuel; et al.; Pedosedimentary development of part of a Late Quaternary loess-palaeosol sequence in northwest Argentina; John Wiley & Sons Ltd; Journal Of Quaternary Science; 19; 6; 12-2004; 567-576
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