CABO CRUZ–ZAPATA–SAN CRISTOBAL STRUCTURE, ALINGMENT OR EARTHQUAKE-GENERATING FAULT?
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Abstract
A great alignment extends throughout the submerged area of the south of de Cuban archipelago and part of the emerged territory of western Cuba. It extends for about 660 km in a NW (328º) direction, from its beginning at a point on Oriente fault, near Cabo Cruz, in the province of Granma, to another located on the north coast of the province of Artemisa, and continues apparently towards the Gulf of Mexico. Although its line is visible to the naked eye in almost all the maps consulted, joining straight segments of the insular platform, the coast and some geological structures, it is not expressly reflected in the tectonic maps. A comparative study is carried out and the reflection of the alignment called in this work as Cabo Cruz-Zapata-San Cristobal is verified in the different thematic maps consulted (geological, tectonic, geophysical, physical, batimetric, hypsometric, seismological). The existence of historical seismic activity in the area of its intersection with the Pinar and Oriente faults, as well as along its extension is highlighted. As a result of the study, a tectonic origin is suggested, proposing to pay special attention to the Cabo Cruz-Zapata-San Cristobal alignment and to carry out geological, geophysical and seismological studies, in order to determine its genesis and geological, tectonic and earthquake-generating implications.
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References
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