Mid-Atlantique Ridge and Açores (Europe)

Although they are generally deep-seated under sea, mid oceanic ridges are the sites with maximum geothermal energy release. . They however can be touched on land in Iceland and Açores, making available a remarkable potential for geothermal development. In the Açores (notably Sao Miguel and Terceira), Géo2D contributed to the process of identifying new resources, so we have technical and geographic expertise in this area.

  • Publications
  • Varet J., Tarney J., Wood D.A., Saunders A.D. & Cann J.R. (1980) - Nature of mantle heterogeneity in the North Atlantic : evidence from deep sea drilling. Phil. Trans. Royal Soc.
  • Varet J., Metrich N. & Bizouard H. (1978) - Pétrologie des séries volcanologiques de l’île de Fayal (Açores). Bull. Volc.
  • Metrich N., Bizouard H., Varet J., (1979) - Pétrologie de la série volcanique de l'ile de Fayal (Açores). – Rapport BRGM/RR-00744-FR, 79, SGN, 023, GTH
  • Varet J., & Metrich N. (1977) - Ash layers interlayered with the sediments of hole 407 and 408, IPOD leg 49. Initial reports of Deep Sea Drilling Project, v. XLIX, p. 437-441
  • Varet J., Choukroune P. (1977) - Study of the tectonic deformation in sediments intercalated in the basalts in hole 412-a, ipod leg 49. – Rapport BRGM/RR-00803-FR, 77, SGN, 617, GTH
  • Varet J., Demange J. (1977) - Leg 49, initial report, part 2. auto-clastic submarine breccias in hole 410, leg 49, and other DSDP sites. – Rapport BRGM/RR-00804-FR, 77, SGN, 616, GTH
  • Wood D.A., Varet J., Bougault H., Corre O., Joron J.L., Treuil M., Bizouard H., Norry M.J., Hawkesworth C.J., Roddick J. (1977) - The Petrology, Geochemistry and Mineralogy of north atlantic basalts. A discussion based on ipod, leg 49. – Rapport BRGM/RR-08222-FR, 77, SGN, 618, GTH
  • Varet J., Monod Th. (1976) - Découverte d’enclaves de syénites quartzifères et autres roches associées plutoniques dans l’île de Flores (Açores). Bull. Soc. Géol. France, 18, 6, p. 1625-1630.
  • Varet J., Fetter P., Joron J.L., Benhamou G., Lefevre L., Feraud G. (1976) - Structures et cycles volcaniques des îles dans le contexte de la tectonique globale de la région des Açores. Colloque ATP, plaque arabique - CNRS (résumé).
  • Varet J., Joron J.L. et Treuil M. (1976) - Evolution magmatique de l‘île de Fayal : discussion volcanologique, pétrologique et géochimique. Colloque ATP, plaque arabique (résumé).
  • Varet J., Joron J.L., Bougault H., Treuil M., Lefeyre C. et Fetter P. (1976) - Evolution magmatique de l’île de Terceira : discussion pétrologique et géochimique. Colloque ATP, Plaque arabique - CNRS (résumé).