Caractérisation des quartz filoniens épithermaux de la zone volcanique de Cabo de Gata (province d'Almería, Espagne) par thermoluminescence basse température; relation avec les textures pétrographiques et les inclusions fluides

In the area of Cabo de Gata, the quartz samples show a wide variety of petrographic textures, and therefore, a highly complex history of veins, which requires several methods and techniques. In the present paper, the authors propose thermoluminescence (TL) as an interesting method for characterizing the different steps involved in the crystallization of quartz veins, coupled with the microscopic observation and fluid inclusion studies. Two different TL techniques will be presented: auto-photographs of TL emissions which represent an original approach in investigating relationships with petrographic textures, and quartz glow curves, which make possible the attribution of low-temperature TL emission to structural defects produced during quartz growth.