RT Journal Article T1 Actividades del Grupo de Trabajo de Geología y Metalogenia de Depósitos Hidrotermales Submarinos (Proyecto P.I.C.G. ne 318) T1 Activities of the Working Group of Geology and Metallogeny of Seafloor Hydrothermal Deposit (I.G.C.R project 318) A1 Martínez Frías, J. AB The Spanish working group on “Geology and Metallogeny of Seafloor Hydrothermal Deposits"(IGCP project 318) has concentrated research in four areas: 1) Las Herrerías deposit, Vera-Garrucha basin (SE iberia): an interesting example of Upper Tortonian -Upper Messinnian, seafloor, hydrothermal mineralization rich in Fe, Mn, Ag, and base metal sulphides; 2) Deception Island, South Shetlands, Antarctic Peninsula: a) Fe-Mn-Zn anomalies in Quaternary seafloor volcanic sediments related with submarine volcanic cones, mounds and vent structures (extensional low-angle faulting episode), and b) As-Ba anomalies associated with fumaroles and hot-springs (tensional faults); 3) Tenerife and La Gomera Islands, Canary archipelago: occurrence of Fe oxide and sulphide mineralization in the alkaline intrusive Complexes), and 4) Campos de Calatrava area: Co-rich Mn deposits PB Sociedad Geológica de España YR 1996 FD 1996 LK http://hdl.handle.net/10272/12929 UL http://hdl.handle.net/10272/12929 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026