European Geothermal Congress 2016 Strasbourg, France, 19-24 Sept 2016 New geologic insights for the Pico Alto Geothermal Field (Terceira Island, Azores, Portugal) as a key tool for its conceptual modelling João Carlos Nunes 1,4*, José Martins Carvalho2,4 and Maria do Rosário Carvalho3,4 1 Universidade dos Açores, Departamento de Geociências, Rua Mãe de Deus, 9501-801 Ponta Delgada, Azores, Portugal 2 TARH, Lda. & Laboratório de Cartografia e Geologia Aplicada, School of Engineering (ISEP), Polytechnic of Porto, Rua Dr. António Bernardino de Almeida, 431, 4200-072 Porto, Portugal 3 Faculdade de Ciências da Universidade de Lisboa, Departamento de Geologia, CeGUL, Campo Grande, Edifício C6, 3º Piso, 1749-016, Lisbon, Portugal 4 Consultant, EDA RENOVÁVEIS, SA – IMAGE Project, Ponta Delgada, Azores, Portugal *
[email protected] Keywords: geological mapping, morpho-tectonics, The geosciences data gathered about the PAGF are geothermal field, Terceira Island, Azores considered essential information within the framework of the IMAGE Project (Integrated Methods for ABSTRACT Advanced Geothermal Exploration) to built a 3D The Pico Alto Geothermal Field (PAGF) is emplaced model representation and visualization of this on a high volcanological complexity area in the geothermal system. central part of Terceira Island (Azores archipelago, Portugal), where Pico Alto and Guilherme Moniz 1. INTRODUCTION: GEOMORPHOLOGY OF silicious polygenetic volcanoes with caldera and the TERCEIRA ISLAND Basaltic Fissural Zone formations outcrop and The morphology of the Terceira Island reflects its interact. At depths, the geothermal system interacts volcanic nature and the tectonic events that occurred also with the Santa Bárbara central volcano with on the island since its formation: the presence of four nested caldera formations that outcrop further east.