Regularidades sismogenéticas de la Unidad Neotectónica Occidental de Cuba

La Falla Activa Guane, Cuba Occidental

“…Cotilla et al (1991A) were the first to recognize activity in the GF ( Figure 1A). They mainly used data from Viñes and Salteraín, 1880 and neotectonic results provided by Cotilla et al (1991B). The latter authors considered the works of Álvarez (1989, 1981), Butticaz (1946A, B), and Cotilla et al (1991C) to determine the existence of the GF.…”

“…According to Cotilla et al (1991B), the mega-block comprises 2 Neotectonic Units, the Western unit [Wnu] and the Eastern unit [Enu], which are separated by the Cauto -Nipe [CNF] transverse-diagonal active fault (NE-SW). An active plate boundary runs along the Cuban south eastern coast where the Plate Boundary Zone [PBZ] is located and related to Oriente fault [OF].…”

Evaluation of the Recent Intraplate Seismic Activity on Cochinos Bay, Cuba

“…Also, they indicate: 1) the low intensity values in the region; 2) the magnitude values estimated on the seismotectonic map are suitable (Cotilla et al, 1991A); 3) the seimogenetic layer is less than 20 km (Cotilla, 1993;Cotilla et al, 1996B). Cotilla and Álvarez (2001) (see their Figure 7) suggested to the Wsu that 4 pairs of faults (1) GF and HCF; 2) HF and HCF; 3) HF and NCF; 5) HCF and CHF) are interconnected active structures. Also, the strike, geometry and activity of these faults can be explained by the presence of 2 large depressed oceanic structures, the Gulf of México and the Yucatán Basin (Figure 2), which are opposed in the contemporary tectonic stress field, mainly caused by the Caribbean, Cocos and North American plates interactions.…”

“…The first group get epicentral parameter values very near between them, and the second one (Cuban network) situated the epicenter more far to the E; 2) the seismic activity [SA] in the surrounding of CHB-JG (Cotilla, 1999A;Cotilla, 2014B); 3) the low energetic level of this area (Cotilla and Álvarez, 2001) (Figure 2); 4) the validity of the geodynamic cells model to explain the earthquakes occurrence (Cotilla et al, 1996A) (Figure 3A).…”

“…We also found 8 knots where the fault intersections are located or associated with some earthquakes (Table 14). The model of the Wsu includes 4 administrative provinces (Pinar del Río, Ciudad de La Habana, La Habana, and Matanzas) ( Figure 5 of Cotilla and álvarez, 2001). …”