Microfossils of the Guadalupe group and the Guaduas formation (campaniano-maastrichtlano) in the Tausa section, Cundinamarca, Colombia.
Abstract
A rich assemblage of foraminifers and ostracods recovered from the Guadalupe group and the base of the Guaduas formation in the Tausa section are described and illustrated. The Guadalupe group is characterized by a low microfounal diversity dominated by the buliminids Siphogenerinoides ewaldi and Siphogenerinoides bramlettei. lncrements in microfoaunal diversity appear to correspond to the middle part of Transgressive System Tracts. Siphogenerínoides bramlettei (lote Maastrichtion in age) supersedes Síphogenerinoides ewaldi (lote Camponion in age); the occurrence of the two taxa corresponds to the first sequence boundary in the Ploeners formation of the Guadalupe group. The first occurrence of S. bramlettei appears to be "isochronous" in northern South America. The base of the Guaduas formation is characterized by a high diversity of calcoreous benthonic foraminifera (rotaliids). Microfossils from the Guadalupe group and Guaduas formation were affected by two taphonomic processes: (1) kaolinite infilling previous to dissolution of tests during the mesodiogenetic stage, and (2) pyrite infilling and pyritization (in sulfidic microenvironments) previous to dissolution of tests during the eodiogenefic stage.
References
Bolli, H. M., Beckmann, J. P., y Saunders, J. B. Benthic foraminiferal biostratigraphy of the south Caribbean region. Camb_ridge University Press, 1 - 408.
Brett, C. E., y Baird, G. C., 1986. "Comparative tapho nomy: A key to paleoenvironmental intcrpretation based on fossíl preservation" , Palaios, 1 (3): 207 - 227. https://doi.org/10.2307/3514686
Bronnimann, P., y Brown, N. K., 1953. "Observations on sorne planktonic foraminifera from the Upper Cretaceous of Cuba", Contr. Cushman Lab. Foram. Res. , 4 (4): 150 - 156.
Brotzen, F., 1936. " Foraminifera aus dem schwedischen untersten senon von Eriksdal in Schonen", Ser. Geol. Undersok. , 30 (3): C (396): l - 126.
Bürgl, H., 1957. "Bioestratigrafia de la Sabana de Bogotá y sus alrededores", Bol. Geol., Ingeominas, 5 (2): 113 - 185.
Caron, M., J985. "Cretaceous planktonic foraminifera", En: Bolli, H. M., Saunders, J. B., y Perch-Nielsen, K. (eds.) Plankton Stratigraphy, Cambridge üniversity Press, 17-86.
Choquette, P. W., y Pray, L., 1970. "Geologic nomenclature and classification of porosity in sedimentary carbonates", .Amer. Assoc. Petr. Geol. Bull. 54: 207 - 250. https://doi.org/10.1306/5D25C98B-16C1-11D7-8645000102C1865D
Cole, W. S., 1938. "Stratigraphy and micropaleontology of two deep wells in Florida", Geol. Survey Bull. 16 (73), 12.
Cushman, J. A, 1930. "Notes on sorne Foraminifera from Venezuela and Colombia", Cushman Lab. Foram. Res., 6: 68 - 69.
Cushman, J. A. , 1931. "A preliminary report on the Foraminifera of Tennessee", Tennessee Div. Geol., Bull. 41: 5 - 112.
Cushman, J. A., 1933a. "New American Cretaceous Fora minifera", Contr. Cushman Lab. Foram. Res. , 14 (1): 2 - 28.
Cushman, J. A., 1933b. "Cretaceous species of Guembelina and related genera", Contr. Cushman Lab. Foram. Res., 9: 49 - 64.·
Cuslnnan, J. A., 1936. "Notes on some American Cre taceous Frondicularia", Contr. Cushman Lab. Foram. Res., 12: 11 - 22.
Cushman, J. A., 1942. "The foraminifera of the Tropical Pacific collections of the «Albatross»,-1899-1900", Part 3. Heterohelicidae and Buliminidae, US Natl. Museum. Bull., 161 (3): 67. https://doi.org/10.5479/si.03629236.161.3
Cushman, J. A., y Church, C. C., 1929. "Sorne Upper Cretaceous foraminifera from near Coalinga, California", Calif. Acad. Se., Proc. ser. 4, 18 (16): 497 - 530.
Cushman, J. A. y Hedberg, H. D., 1930. Contr. Cushman Lab. Foram. Res., 6 (68).
Cushman, J. A. y Hedberg, H. D., 1941. "UpperCretaceous foraminifera from Santander del Norte, Colombia S. A.", Contr. Cushman Lab. Foram. Res., 17 (23): 79 - 100.
Cushman, J. A., y Parker, F. L., 1935. "Sorne American Cretaceous Buliminidae", Contr. Cushman Lao. Formn. Res., 11 (4): 96 - 101.
Cushman, J. A., y Waters, J. A., 1927. "Sorne arenaceous Foraminifera from the Upper Cretaceous of Texas", Cushman Lab. Foram. Res., 2: 81 - 85.
Dietrich, W.. O., 1935. "Zur Stratigraphie der kolum bianischen Ostkordillere" , Zentra.lb. Mineral., Geol. & Paliiont., B: 74 - 82.
Follmi, K., Garrison, R., Ramírez, P., Zambrano, F., Kennedy, W. J., y Leb.ner, B., 1992. "Cyclic phosphate rich successions in the Upper Cretaceous of Colombia" , Palaeogeogr. Palaeoclim. Palaeoecol., 93: 151 - 182. https://doi.org/10.1016/0031-0182(92)90095-M
Grzybowski, L., 1898. "Otwornice pokladow naftonosnych okolicy Krosna", Rozprawy Wyd. Matemat.-przyrod., Akad. Umiejet. Krakowie, ser. 2 (33): 257 - 305.
Haq, B. U., Hardenbol, J., y Vail, P. R., 1987, "Chronology of fluctuating sea levels since tbe Triassic", Science, 235: 1156 - 1167. https://doi.org/10.1126/science.235.4793.1156
Hubach, E., 1957. "Estratigrafía de la Sabana de Bogotá y alrededores" , Bol. Geol. Ingeominas, 5 (2): 93 - 112.
Kaminski, M. A., Gradstein, F. M., Berggren, W. A., Geroch, S., y Beckmann, J. P., 1988. "Flysch-type foraminiferal assemblages from Trinidad: Taxonomy, stratigraphy and paleobathymetry", Abh. Geol., Band 41: 155 - 227.
Karsten, H., 1858. "Über die geognostischenVerhaltnisse des westlichen Columbien", Der heutigen Republiken Neu-Granada un Equador, Deutsch. Natwforsch. Arzte Wien, Amtl. Ber., 32: 80 - 117.
Koutsoukos, A. M., y Bengtson, P., 1993. "Towards an integrated Biostra tigra phy of the upper Aptian Maastrichtian of the Sergipe basin, Brazil", Docum. Lab. Géol. Lyon, 125: 241 - 262.
Loeblich, A. R., y Tappan, L., 1988. Foramin/f'era Genera and their Classification , Van Nostrand Reinhold, 1059 pp. https://doi.org/10.1007/978-1-4899-5760-3
Martínez, J. I., 1987. Foraminiferal biostratigraphy ancl sea level changes of the Maastrichtian Colon mudstones of northern South America Molino River section, Colombia, MSc. thesis. University of Hull, Inglaterra, 98 pp.
Martínez, J. I., 1988. "Micropaleontología de las secciones: Barbosa-Arcabuco-Tibasosa, Los Medios, Villa de Leyva y Ubaté" , Ingeominas (informe inédito).
Martínez, J. l, 1989a. " Siphogenerinoides spp. y el límite Campaniano-Maastrichtiaonen el norte de Suramérica", V Congreso Colombiano de Geología, Bucaramanga, Memoria l: 50 - 60.
Martínez, J. l., 1989b. "Foraminiferal biostraligraphy and paleonvironmems of the Maastrichtian Colon rnud stones of northérn Soutb America", Micropaleontology, 35 (2): 97 - 113. https://doi.org/10.2307/1485462
Martínez, J. I., 1990. "Estratigrafía de la Plancha 227' '.
lngeomínas (informe inédito), 163 pp.
McLaughlin, D. H., y Arce, M., 1975. "Mapa geológico del cuadrángulo Zipaquirá (Kl 1;Colombia)" , Ingeo minas, escala 1: 100.000.
Nederbragt, A. J., 1991. "Late Cretaceous biostratigraphy and development of Heterohelicidae (planktic forami nifera)", Micropaleontology, 37 (4): 329 - 372. https://doi.org/10.2307/1485910
Petters, V., 1955. "Development of Upper Cretaceous foraminiferal faunas in Colombia", J. Paleont. 29 (2): 212 - 225.
Plummer, H. J., 1926. "Foraminifera of the Midway Formation in Texas", Texas University Bull. 2644: 126 - 127.
Raiswell, R., Whaler, K., Dean, S., Coleman, M. L., y Briggs, D. E. G., 1993. "A simple threedimensional m el of diffusion-with-precipitation applied to Ioca lised pyrite formation in ramboids, fossils and de trital iron minerals'', Marine Geology, 113: 89 - 100. https://doi.org/10.1016/0025-3227(93)90151-K
Reveís, S. A., 1988. "The foraminiferal toothplate, a re view", J. Mícropalaeontology, 12 (2): 155 - 168. https://doi.org/10.1144/jm.12.2.155
Sanniento, G., 1992a. "Palinología de la Fm. Guaduas, Es tratigrafía y sistemática", Bol. Geol. Ingeominas, 32: 1 - 3.
Sarmiento, G., 1992b. "Estratigrafía y medios de depósito de la Formación Guaduas", Bol. Geol. Ingeominas, 32: 1 - 3.
Shelton, J, W., 1964. "Authigenic kaolinite in sandstone", J. Sed. Petrol., 34 (1): 102 - 111. https://doi.org/10.1306/74D70FDD-2B21-11D7-8648000102C1865D
Sliter, W. V., 1968. "Upper Cretaceous foramiuifera from southern California and northwest Baja California", Mexico, Paleont. Cont1·. Univ. Kansas, 49 (7): 1 - 141.
Stone, B., 1946. "Síphogenerinoides Cushman (arder Foraminifera, family Buliminidae", J. Paleontol. 20: 463 - 478.
Ten Darn, 1948. "Lns espe·ces du genere Epistomina Ter quem, 1883", Inst. Francais Petrole Rev., 3: 161 - 170.
Vergara, L., 1994. Stratigraplzic, micropaleontologic and organic geochemical relations in the Cretaceous of the Upper Magdalena Valley, Colombia, PhD thesis, Giessen University: 1 - 235.
Whatley, R., 1991. "The platycopid signa[: a means of detecting kenoxic events using Ostraeoda", J. Micro palaeont., 10 (2): 181 - 185. https://doi.org/10.1144/jm.10.2.181
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