Determination of the stratigraphic boundaries between Cerrejón and Tabaco Formations in the highwall of Annex Pit in Cerrejón Mine, Colombia

Authors

DOI:

https://doi.org/10.17981/ingecuc.16.2.2020.1

Keywords:

cerrejon formation, cerrejon mine, highwall, stratigraphy, stratigraphic boundary

Abstract

Introduction: In the Cerrejón mine, located in the department of La Guajira in northeastern Colombia, there is a sedimentary sequence belonging to the Cerrejón and Tobacco Formations specifically in the Annex pit.

Objective: To determine the stratigraphic limit between the Cerrejón and Tobacco Formations.

Methodology: Realization the historical and documentary compilation of the Annex pit area; subsequently an observational stage was carried out in the field complemented with stratigraphic uplift based on the cores of four (4) wells and their respective descriptions, taking into account textural elements, mineralogical composition, alterations, facies, structures; In addition, geophysical logs of each of the wells were made, where the behavior of each type of material could be appreciated.

Results: The Cerrejón Formation, is constituted from base to top by packages of massive sandstones of fine grains, interspersed with black mudstones, towards the upper limit they underline levels of sandstones of great thickness, delectable, with abundant lithic fragments and conglomeric sandstones, corresponding to Tobacco Formation, marking in a feasible way the stratigraphic boundary between the Cerrejón and Tobacco Formations.

Conclusion: The stratigraphic contact is of the discordant erosive type, deduced from the descriptions of the XH26 coring well at a depth of 140 meters, where the stratigraphic limit of the Cerrejón and Tobacco Formations was found.

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References

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Published

2020-05-04

How to Cite

Cortés Moreno, P. A., Rojas Martínez, E. E., Lascarro Navarro, F. D., Ospino Fragozo, J. P., & Manco Jaraba, D. C. (2020). Determination of the stratigraphic boundaries between Cerrejón and Tabaco Formations in the highwall of Annex Pit in Cerrejón Mine, Colombia. INGE CUC, 16(2), 1–11. https://doi.org/10.17981/ingecuc.16.2.2020.1

Issue

Vol. 16 No. 2 (2020): (Julio-Diciembre)

Section

In Press

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