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Arquitectura secuencial en cuencas lacustres someras (Mioceno de la Cuenca del Duero). Analogías y diferencias con los principios de la estratigrafía secuencial

Mediavilla López, Rosa María and Santisteban, Juan I. and Dabrio, Cristino J. (2000) Arquitectura secuencial en cuencas lacustres someras (Mioceno de la Cuenca del Duero). Analogías y diferencias con los principios de la estratigrafía secuencial. Geotemas, 1 (2). pp. 199-200. ISSN 1576-5172

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Abstract

Sequence stratigraphy principles are compared to similar geometrica architectures in lacustrine
sediments of Miocene age in the Duero Basin (NW Spain). The studied sequence shows an
erosive base wirh multiple scours, a lower reach that shows an aggradational pattern, first
deepening and later and mostly shallowing upward, foffowed by an upper reach composed by
prograding c1inoforms deeper than the immediately underlying deposits. The upper boundary of
lhe sequence is another erosive surface with multiple scours. This sequence can be compared to
a type 2 sequence al Van Wagoner et al. (1988). Despite the similarities concerning geometries
and their evolution, there are some differences about water depth evolution and thus about facies
evolution thaat show reverse relations in the sequence stratigraphy model and our lacustrine case.
Similarities are due lO common evolulion of base level in both cases. Differences arise from the
different amount of influence of sedimentation and subsidence in marine and lacustrine systems.


Item Type:Article
Uncontrolled Keywords:Lacustrine clinoforms, Sequence stratigraphy, Accommodation rate, Miocene, Duero Basin.
Subjects:Sciences > Geology > Stratigraphic geology
ID Code:11170
Deposited On:16 Sep 2010 07:47
Last Modified:23 Feb 2011 11:23

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