Tectonic control on travertine and silica sinter deposition in oceanic transform-fault setting: the case of the Lýsuskarð volcano-geothermal area, Snæfellsnes Peninsula, Iceland ...

• Main Authors: Brogi, Andrea, ISRADE, Isabel, Árnadóttir, Sigurveig, Capezzuoli, Enrico
• Format: Dataset
• Language: unknown
• Published: Taylor & Francis 2023
• Subjects: Biophysics; Biochemistry; Medicine; Cell Biology; Genetics; FOS Biological sciences; Biotechnology; Evolutionary Biology; Chemical Sciences not elsewhere classified; Ecology; Developmental Biology; Marine Biology; Cancer; Inorganic Chemistry; FOS Chemical sciences; Computational Biology; Iceland
• Online Access: https://dx.doi.org/10.6084/m9.figshare.22134842; https://tandf.figshare.com/articles/dataset/Tectonic_control_on_travertine_and_silica_sinter_deposition_in_oceanic_transform-fault_setting_the_case_of_the_L_suskar_volcano-geothermal_area_Sn_fellsnes_Peninsula_Iceland/22134842

Deposition of terrestrial carbonate (i.e. travertine) and silica sinter in geothermal areas is always closely linked to the presence of relevant crustal structures which enhance the permeability in the upper crust favouring the upflow of fluids to the surface. Most travertine deposits are originated by geothermal fluids stored within carbonate reservoirs in continental crust, and their morphology and areal distribution provide useful information on geometry, kinematics, and age of faults which control the fluid flow. In this paper, we focus on the tectonic control on a travertine depositional system, associated with silica sinter, developing in oceanic crust, in the Lýsuskarð volcano-geothermal area on the Snæfellsnes Peninsula, West Iceland. The presence of HCO 3 and Ca in the geothermal fluids is related to chemical-physical processes linked to fluid–rock interaction that occurs in the geothermal reservoir made up of tholeiitic basalt, by fluids enriched in CO 2 of deep origin (i.e. magmatic). Travertine ...