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Estratigrafía del Material No-Consolidado en el Subsuelo del Nororiente de Santafé de Bogotá (Colombia) con Algunas Notas Sobre Historia Geológica

Stratigraphy of non-consolidated material in subsurface, north-eastern Santafé de Bogotá, D.C., (Colombia), with some notes on historical geology

Author: Alberto Lobo-Guerrero S.

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Related publication on geology and hydrogeology of Sabana de Bogota (No. 16) >
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RESUMEN
Seis conjuntos sedimentarios independientes componen la estratigrafía del material no-consolidado del subsuelo del nororiente de Santafé de Bogotá. De base a techo son: 1) Unidades Fluviales y Lacustres, 2) Unidades Fluviales Arenosas, 3) Conjunto Inferior de Unidades Lacustres, 4) Unidad de Exposición Subaérea Lacustre- Aluvial, 5) Conjunto Superior de Unidades Lacustres, y 6) Unidades Fluviales. Los conjuntos se subdividen en varias unidades litoestratigráficas informales. Las oscilaciones en el nivel del paleo-lago de la Sabana de Bogotá, generadas por eventos tectónicos y fluctuaciones climáticas produjeron variados ambientes de depositación como deltas lacustres, pantanos, lagos, llanuras aluviales, y turberas, entre otros. Adicionalmente se presentó
aporte eólico y piroclástico. Se incluye la secuencia probable de eventos geológicos que llevó a depositar las unidades descritas.

ABSTRACT
Subsurface stratigraphy of non-consolidated material in North-Eastern Santafé de Bogotá is made up of six independent sedimentary sets. From base to top, they are: 1) Fluvial and Lacustrine Units, 2) Sandy Fluvial Units, 3) Lower Lacustrine Units, 4) Lacustrine-Aluvial Unit of Subaerial Exposition, 5) Upper Lacustrine Units, and 6) Fluvial Units. Such sets are divided in several informal lithostratigraphic units. Varied depositional environments such as lacustrine deltas, marshes, lakes, alluvial plains and peat bogs, among others, were produced by level oscilations of the Sabana de Bogotá paleo-lake, caused by tectonic events and climatic fluctuations. The lake also received aeolic and pyroclastic input. This article includes a sequence of probable geologic events that led to the deposition of the units described.

 
 
Download complete PDF file of here >
Related publication on geology and hydrogeology of Sabana de Bogota (No. 16) >
Related publication on the Bogota Fault (No. 23) >
Related publication on geological field trip around Sabana de Bogota (No. 24) >
Related publication on the Sabana Petroleum Basin (No. 25) >
Related publication on effects of aquifer overexploitation on urban infrastructure (No. 14) >
Other downloadable documents related to engineering geology >
Other downloadable documents related to hydrogeology >
 
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