Mario Fernández Arce

Seismotectonic and the Hipothetical Strike – Slip Tectonic Boundary of Central Costa Rica

The studied area is comprised of the Central Volcanic Range (CVR) of Costa Rica, the northwest flank of the Talamanca Cordillera, and the space between them, known as the Central Valley of Costa Rica (Figure 1). The Central Valley separates volcanic rocks of the CVR from intrusive rocks of the Talamanca Cordillera. The zone is characterized by low seismicity in the north and high seismicity in the South (Montero, 1979; Montero & Dewey, 1982; Montero and Morales, 1984).