Pb-Zn mineralization in Cretaceous sediments of the Eastern Cordillera. Montenegro region (Santander)
DOI:
https://doi.org/10.32685/0120-1425/bolgeol31.2-3.1990.168Keywords:
Colombia, base metal, Lower Cretaceous, galena, sphalerite, sulfides, dolomitized limestone
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Abstract
The region of this study is located at the south- central end of the Santander Massif, Eastern Cordillera of Colombia. In a sequence of Lower Cretaceous sediments and in a position concordant with the direction of the strata, there is a 2.4 m thick horizon containing Pb and Zn minerals, mainly galena and sphalerite. Sulfides occur as lenses, veins, and dissemination in layers of sandstones, mudstones, and dolomitized limestone. The gangue material is represented by calcite, quartz, dolomite, and pyrite.
In an area of 2.5 km long and 500 m wide, a strip- oriented NNW-SSE is delimited, in which three zones with anomalous values are recognized, mainly in Pb, Zn, V, and Mn, in addition to relatively high values in Fe and F.
The Montenegro mineralization and the zones with geochemical and geophysical anomalies are located within 300 m of the Cretaceous sequence. Some of the geological features recognized in the Montenegro area correspond to those described in Mississippi Valley type base metal deposits.
References
ACOSTA, C. E., 1960.- Estratigrafía de García Rovira. Bol. de Geol. UIS (Bucaramanga) (5): 33-39.
BERNARD, A. J., 1971.- A review of processes leading to the formation of mineral deposits in sediments. In: Ores in Sediments.
CALLAHAN, W. H., 1964.- Paleophysiographic premises for prospecting for strata Bound metal deposits in carbonate rocks: CENTO Symposium. Turkey, p. 191-248.
CONNOR, J.J. and SHACKLETTE, H.T., 1975.- Background Geochemistry of sorne rocks, soils, plant and vegetables in the conterminous United States. U.S. Geol. Surv. Prof. pap. 574F.
FABRE, A. y DELALOYE, M., 1983.- Intrusiones básicas cretácicas en las sedimentitas de la parte central de la Cordillera Oriental. Geología Norandina (6): 19-28. Bogotá.
GROTJOHANN, H., 1978.- Die Korrelation von Geochemic und Faziez differenzierungim erzhoeffigen Mus chelkak (Mitteltrias) der Ostalpen.
GUSTAFSON, L. and WILLIAMS, N., 1981.- Sediment-Hosted Stratiform deposits of Copper, Lead and Zinc. Econ. Geology 75th Anniversary volume. p. 139-178.
HAWKES, H.E., 1954.- Geochemical prospecting in the Nyeba Lead-Zinc District, Nigeria, Geol. Surv. Bull. 1000-B.
JARAMILLO, L. y TÉLLEZ, N., 1972.-Geoquímica de García Rovira (Departamento de Santander y Boyacá). INGEOMINAS. Inf. 1619. 67 p.
JULIVERT, M., 1960.- Geología de la región occidental de García Rovira (Cord illera Oriental, Colombia). Bol. de Geol. UIS (Bucaramanga) (3): 15-33.
LEPELTIER, C., 1969.- A simplified statistical treatment of geochemical data by graphical representation: Econ. Geology V 64, p. 538-550.
MENDOZA, H. y JARAMILLO, L., 1979.- Geología y Geoquímica del área de California, Santander. Bol. Geológico XXII (2): 1-52. Bogotá.
MENDOZA-FORERO, H., 1981.- Mineralizaciones estratoconfinadas de metales básicos en la Cordillera Oriental de Colombia. Tercer Congreso Colombiano de Geología, Medellín (Resúmenes, p. 52).
MENDOZA-FORERO, H., 1983.- Distribución y metalogénesis de l os depósitos minerales de la Cordillera Oriental de Colombia, entre los 4 ° y 9° Latitud Norte. 10a. Conferencia Geol<,Sgica del Caribe, Cartagena (Resúmenes, p. 53).
POLANIA, J.H., 1983.- Mineralizaciones de Uranio y otros metales en California (Santander del Sur). Geología Norandina (6): 57-65. Bogotá.
ROPAIN, C., 1980.- Estudio preliminar-de polarización inducida y magnetometría en mineralizaciones de fracturas. Área de Montenegro (Santander) INGEOMINAS (Documento interno).
SAMAMA, J.C., 1971.- Ore deposits and continental weathering: a contribution to the problems of geochemical inheritance of heavy metal contents of basement areas and of sedimentary basins. In: Ores in sediments.
SANGSTER, D.F., 1976.- Carbonate-Hosted Lead-Zinc deposits. In: Handbook of stratabound and stratiform ore deposits.K.H. Wolf (ed) v.6 p. 447-456.
SILLITOE, R. et al, 1982.- Setting, characteristics, and age of the Andean porphyry copper belt in Colombia. Econ. Geol. V. 77, p. 1837-1850.
SMIRNOW, V. J., 1977.- Factor of time in formation of stratabound ore deposits In: Timeand Strata-Bound ore deposits. Klemm and Scheneider (ed) N.Y. pp. 3-18.
STIBANE, F. y FORERO, A., 1969.- Los afloramientos del Paleozoico en La Jagua (Huila) y Río Nevado (Santander). Geol. Col. (6): 31-66. Bogotá.
TAYLOR, R.B. and STEVEN, T.A., 1983.- Definition of mineral resource potential. Econ. Geology. V. 78, p. 1268-1270.
VARGAS, R. et al, 1976.- Geología del Cuadrángulo 1-13, Málaga. INGEOMINAS. Inf. 1712.
VINE, J. D. and TOURTELOT, E. B., 1970.- Geochemistry of Black shale deposits-A Summary Report. Econ. Geology V. 65, p. 253-272.
WARD, D. et al, 1970.- Recursos minerales de parte de los departamentos de Norte de Santander y Santander. Bol. Geol. V. 18 (3): 140 p.
WEDEPOHL, K.H., 1971.- Zinc and Lead in common sedimentary rocks. Econ. Geology V. 66: p. 240-242.
WEDOW, H. et al, 1973.- Zinc In: United States Mineral Resources. U. S. Geol. Surv. Prof. Paper 820. p. 697-711.
