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Abstract
The Diablo Inferior and San Fernando Superior Formations outcrop in the Llanos Orientales Foothills, Yopal area. Recent palynological studies allow determining that the sediments from the Diablo Inferior Formation were deposited in high energy fluvial environments during the Late Miocene. Recovered palynological assemblages from these strata are also characterized by the common presence of reworked Early Miocene, Oligocene-Late Eocene, Paleocene and Cretaceous palynomorphs. These sediments are the result of a very strong erosion period in the Eastern Cordillera during the initial phase of the Andean Orogeny. Sediments from the San Fernando Superior were deposited in shallow marine environments during the Middle Miocene. The Middle Miocene seas occupied most of the Maracaibo, Barinas-Apure and Llanos Orientales basins and transgressed toward the south until influencing the western part of the Amazon Basin.
Based on the new available palynological data it is possible to correlate the Diablo Inferior and
the San Fernando Superior Formations with the Lower Guayabo and Leon Formations respectively.
These two last, are operational Units used by the Oil Industry for the subsurface of the Llanos
Orientales Basin. The San Fernando Superior Formation can be also correlated with the Pebas
Formation which outcrops in the western part of the Amazonas Basin.
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References
Cooper, M.A., Addison, FT., Alvarez, R., Hayward, A.B., Howe, S., Pulhan, A.J. & Taborda, A. 1.995. Basin development and Tectonic history of the Llanos Basin, Colombia. AAPG Memoir 62: 659-665.
Dueñas, H. 1985. Observaciones sobre la Nomenclatura Estratigráfica de la Cuenca de los Llanos Orientales. Colombia. Memorias II Simposio Bolivariano de Exploración Petrolera en las Cuencas Sub-Andinas. Vol 2, Bogotá.
Dueñas, H. 1999. Sequence analysis of Western Venezuelan Cretaceous to Eocene sediments using Palynology: Chrono Paleoenvironmental and Paleovegetational approaches: Discussion. Palynology, 23(1999): 31-33.
Germeraad, J.H., Hopping, C.A., & Muller, J. 1968. Palynology of Tertiary sediments from tropical areas. Rev. Palaebot. Palynol. 6: 189-348.
Hoorn, C. 1993. Marine incursions and the influence of Andean tectonics on the depositional history of north-western Amazonia: results of a palynological study. Palaeogeography, Palaeoclimatology, Palaeoecology, 105, 267-309.
Hoorn, C. 1994. Miocene palynostratigraphy and palaeoenvironments of north-wertern Amazonia. Evidence for marine incursions and the influence of Andean Tectonics. Doctoral Tesis, Hugo de Vries Laboratory, University of Amsterdam. Hoorn, C. 2006. The birth of the mighty Amazon. Scientific American. May 2006: 52-59.
Lorente, M.A. 1986. Palynology and palynofacies of the Upper Tertiary in Venezuela. Diss. Bot., band 99, J. Cramer, Berlin: 222 pp.
Miller, TH. & Etayo, F. 1972. The geology of the Eastern Cordillera between Aguazul-Sogamoso-Villa de Leyva. Thirteenth Annual Field Conference. ACGGP. Bogotá. Colombia.
Muller, J., Di Giacomo, E. & Van Erve, A. 1987. A palynological zonation for the Cretaceous, Tertiary and Quaternary of Northern South America. AASP. Contributions Series Number 19: 7-76.
Notestein, F.B., Hubman, C.W. & Bowler, J. 1944. Geology of the Barco Concession. Republic of Colombia, South America. Bull. Geol. Soc. Amer. Vol 55, pp1165-1215. New Cork.
Ramos, V. & Alonso, R. 1995. El Mar Paranense en la provincial de Jujuy. Revista Instituto de Geología y Minería, Jujuy, 10, 73-82.
Ramos, V. & Aleman, A. 2000. Tectonic evolution of the Andes, in Tectonic evolution of South America, 31th International Geological Congress Rio de Janeiro August 6-17, 2000.
Ramos, V. 2006 Curso sobre Tectónica Andina IX Simposio Bolivariano Exploración Petrolera en las Cuencas Subandinas, Cartagena Septiembre 24-27, 2006.
Renzoni, G. 1985. Interpretación fotogeológica de la Plancha 193 –Yopal. Escala 1: 100.000. Informe 1951. Ingeominas, Bogotá.
Renzoni, G. 1991. Notas sobre la Fotogeología de la Plancha 193-Yopal. Ingeominas, Bogotá.
Ulloa, C. & Rodríguez, E. 1976. Mapa Geológico de la Plancha 211; Tauramena. Escala 1: 100.000. Ingeominas, Bogotá.
Ulloa, C. & Rodríguez, E. 1981. Geología del Cuadrángulo K-13 Tauramena. Bol. Geol. 24 (2): 3-30 Bogotá.
Van der Hammen, Th. 1954. El desarrollo de la Flora Colombiana en los períodos geológicos: I Maastrichtiano hasta Terciario más inferior. Bol. Geol. Vol 2 (1). Instituto Geológico Nacional. Bogotá.
Van der Hammen, Th. 1956. Descripción de algunos géneros y especies de polen y esporas fósiles. Bol. Geol. Vol 4 (2, 3) Instituto Geológico Nacional. Bogotá.
Van der Hammen, Th. 1960. Estratigrafía del Terciario y Maastrichtiano continentales y tectogénesis de los Andes Colombianos. Bol. Geol. Vol. VI (1-3): 67-128, Ingeominas, Bogotá.
Van der Hammen, Th. 1961. Late Cretaceous and Tertiary stratigraphy and tectogenesis of the Colombian Andes Bol.Geologie en Mijnbouw, 40(5): 181-188.
Van der Hammen, Th., Werner, J.H. & Van Dommelen, H. 1973. Palynological record of the upheaval of the Northern Andes: a study of the Pliocene and Lower Quaternary of the Colombian Eastern Cordillera and the early evolution of this High-Andean biota. Rev. Palaeobot. Palynol. 16: 1-122
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