RT Journal Article T1 Composición de las inclusiones fluidas en la halita del sondeo Biurrún (cuenca Potásica de Navarra) T1 Fluid inclusions composition in halite from Biurrún borehole (Navarra Potash basin) A1 García Veigas, Javier A1 Ayora Ibáñez, Carlos A1 Pueyo, J. J. AB The solute concentration of fluid inclusions in halite samples have been analyzed by X-Ray microanalysis (Cryo-SEM-EDS). The results together with the mineral sequence are useful to describe the evolution of the Priabonian basin of Navarra. Thus, a lower salt unit (sal de muro) formed in a restricted basin with seawater recharge. Later, the basin closed to sea and evolved with decreasing volume and stratified brine to the deposition of potash salts. Finally, an upper salt unit (sal d e techo) formed in a continental lake without seawater influence PB Sociedad Geológica de España YR 1994 FD 1994 LK http://hdl.handle.net/10272/13983 UL http://hdl.handle.net/10272/13983 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026