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The structural analysis of La Trocha Fault Zone at a regional scale was carried out, following the interpretation of a great volume of geological and geophysical information, which was classified as: morphometric, gravimetric, superficial and underground geology. A digital elevation model (DEM) was obtained, starting with the digitalization of 24 parts of the Topographical Map of the Republic of Cuba 1:50000, published by the Geodesy and Cartography Cuban Institute in 1977. The processing of the DEM allowed obtaining the main existing alignments in the region. The information of the gravimetrical mapping of the Central Basin at a scale of 1:100000 was processed. The maps of anomalies of Bouguer, ascending analytic continuations and gravimetric gradients were constructed. The geological information of the surface was taken from the Geologic Map of the Republic of Cuba 1:100000, published by the Geology and Palaeontology Institute in 2001, while the underground geological information was obtained from the wells perforated during the oil activity in the Central Basin. The processing of the geological and geophysical information was carried out digitally. The combined interpretation of the geological and geophysical information allowed an approach to the geometric characteristics of the La Trocha Fault Zone. The predominant directions were established in the zone of main displacement and the possible evolution of the tectonic efforts. An evolution model was proposed for the region, considering the existence of a flower structure, which adjusts the existing characteristics and explains the simultaneous development of a tensional basin, the Central Basin company. [ABSTRACT FROM AUTHOR]

The set of tectonostratigraphic units that conform the actual geology of the Island of Cuba; they make it distinctive from the rest of the Greater Antilles islands. The Cuban folding belt extended in the western and central part of the country, fundamentally characterized by the presence of rocks of an arc of volcanic islands of Cretaceous age, plus an ophiolitic crust, that rides over the carbonatatedterrigene and carbonatated sequences of an ancient continental margin of Jurassic- Cretaceous age. In this paper the objectives are: 1) an evaluation of the tectonostratigraphic systematization used in Cuba and some critical ideas on the same; 2) a tectonostratigraphic systematization is proposed for the eastern center sector of Cuba, defined by the system of Trocha Fault in its western part and Cauto-Nipe fault to the east. This is carried out according to the conceptions of Formational Structure Associations (FSA). The systematization on base of the FSA, present great advantages, well it permits a better understanding of the geologic evolution of a territory and of the cuban fold belt Cuban in particular. For which, we defined, into the eastern center portion, the following FSA. • Southern paleomargin of North America. • Cretaceous volcanic island arc. • Ophiolites of the suprasubduction Cretaceous zone. • Southeastern paleomargin of Yucatan Block. • Cretaceous volcanic island arc. • Neoplataformic. [ABSTRACT FROM AUTHOR]

This work deals with the socio-economic and scientific potential of Mayari municipality allowing the establishment of a knowledge network supported by efficient information services in order to guarantee the food security of its inhabitants. The importance of identifying traditional knowledge owned by peasants is stressed as well as its link with the scientific knowledge of researchers, professors and technicians of the territory in order to collectively face this problem together with the local government. The factors intervening in knowledge management are characterized and the social and geographic characterization of the municipality is given. This work summarizes the link between the knowledge of local peasants and scientists which will allow reaching joint, interactive and sustainable outcomes as a solution for inadequate food security in the territory. [ABSTRACT FROM AUTHOR]

Central Basin of Cuba is one of the most important places by its geological and economical interest. Several geophysical investigations have been carried out during the exploration stage placing emphasis on the gravimetrical surveys. Considering the results obtained with gravimetry in other investigated areas, in this study a qualitative interpretation was made of the gravimetric data 1:100 000. Initially, different transformations from the gravimetric field were made (Ascending Analytical Continuation and horizontal calculations of gradients), then they were plotted on isolines and shaded relief map for later qualitative interpretation. New structural regularities of the Central Basin were established which demonstrates the noticeable tectonic control of region. Most of the known faults systems are related with alienations in the gravimetric field, likewise alienated zone exist mainly in the northeast, southeast and northeast-southeast directions, which are associated to these systems and cannot constitute faults zones that were not reported in previous investigations. The presence of great positive anomalous zones under the quaternary sequences indicates that volcanogeno-sedimentary or volcanogeno-deposited during the cretacic volcanic activity exist at depth. A zone of high gradients with northeastern-southwestern direction is defined, which indicates the limit between the flooded and overlying sequences of the passive paleomargin and the emigraben of the Central Basin. In the far north occidental and central regions, the rocks of low densities reach their greatest depths, whereas the high density ones are found in the occidental part of the region. All the elements indicated, will allow one better planning of future geologic investigations in the region. [ABSTRACT FROM AUTHOR]