geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

The coal deposit of Tibita, Colombia; geologic and coal petrographic investigation


, : The coal deposit of Tibita, Colombia; geologic and coal petrographic investigation. International Journal of Coal Geology 10(4): 361-382

The coal deposit of Tibita is located 90 km NNE of Bogota and is part of the more than 600-km-long coal belt of Colombia's East Cordillera. There are up to 10 mineable coal seams of around 1 m thickness each within the Upper Cretaceous/Early Tertiary Guaduas formation. The coal measures were folded during the Andean orogeny and were preserved in SW-NE-extending synclines. Despite its low rank (35–45% VM) some of the coal possesses good coking properties. The exinite-poor coal shows a number of petrographic pecularities. It largely consists of the rare microlithotype vitrinertite and is lacking in durite and clarodurite. Macroscopically, the coal is mostly homogeneous. Two major lithotypes are described here, i.e. layered and unlayered coal. It was by means of microlithotype analysis, that whole-seam-sample sequences of several boreholes could be correlated successfully. Thus coal reserves could be reliably estimated.

US$19.90

DOI: 10.1016/0166-5162(88)90010-9


Other references

Brill, W.J., 1981: Agricultural microbiology. Scientific American 245(3): 198-200, 202 et Passim

Belova, N.I.; Burtsev, S.P.; Vorobtsova, E.A.; Martynenko, A.V., 2006: Attitude of students to health and healthy life-style. Results of sociological survey of attitude of academic first-year students to health and healthy life-style are presented. Concurrence of respondents' opinions with used in scientific literature notions "health and healthy life-style&quo...

Marhue L., 1986: Containers and containment. Waddington, J And D M Rudkin (Ed ) Royal Ontario Museum Life Sciences Miscellaneous Publications; Proceedings Of The 1985 Workshop on Care And Maintenance Of Natural History Collections Vi+121p Royal Ontario Museum: Toronto, Ontario, Canada Illus Paper 92

Blum, R.W., 1992: Chronic illness and disability in adolescence. Journal of Adolescent Health 13(5): 364-368

Bosinski, T.J.; E.S.lh, A.A., 2006: Recombinant factor VIIa, its clinical properties, and the tissue factor pathway of coagulation. Recombinant factor VIIa (rFVIIa) is a synthetic coagulation protease that is structurally similar to human-derived plasma FVIIa. Pharmacologic doses of rFVIIa have been shown to enhance thrombin generation and assist in forming stable fibrin plugs...

Levina, A.; Lay, P.A., 2008: Chemical properties and toxicity of chromium(III) nutritional supplements. The status of Cr(III) as an essential micronutrient for humans is currently under question. No functional Cr(III)-containing biomolecules have been definitively described as yet, and accumulated experience in the use of Cr(Ill) nutritional supple...

Anonymous, 2013: Metacarpianos traumaticos. Las fracturas de los metacarpianos se encuentran entre las m s frecuentes del miembro superior. S lo un 25% de estas fracturas requiere tratamiento quir rgico. Estas fracturas consolidan bien y tienen una buena reputaci n, lo que quiz implique un...

Iusupova, D.V.; Sokolova, R.B.; Gedze, G.I., 1983: Deoxyribonuclease of Proteus mirabilis. DNAase was isolated and purified from cell-free extracts of Proteus mirabilis by means of fractionation with ammonium sulfate and CM cellulose chromatography. The enzyme exhibited the endonuclease specificity with DNA as a substrate, split off the...

Sazonov A.M., 1995: Geochemistry of gold in metamorphic rocks of the Bug region (the Ukrainian Shield). Russian Geology and Geophysics 36(1): 67-75

Alexandridis, A.; Stefani, F.H., 1980: Treatment of band keratopathy. Band keratopathy may be treated either surgically or by using chelating agents. If central corneal scars are present corneal grafting is indicated while in their absence dissolving therapy is preferable. Eight successful corneal grafts and three c...