Initial sub-aerial volcanic activity along the central Lesser Antilles inner arc: New K–Ar ages from Les Saintes volcanoes

• Published in: Journal of volcanology and geothermal research Vol. 287; pp. 12 - 21
• Main Authors: Zami, Fabienne, Quidelleur, Xavier, Ricci, Julia, Lebrun, Jean-Frédéric, Samper, Agnès
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier B.V 15.10.2014; Elsevier
• Subjects: Age; Crystalline rocks; Dominica; Earth Sciences; Earth, ocean, space; Enrichment; Exact sciences and technology; Geochemistry; Geochronology; Igneous and metamorphic rocks petrology, volcanic processes, magmas; Islands; Isotope geochemistry. Geochronology; K–Ar dating; Lava; Les Saintes; Lesser Antilles; Recent arc activity; Sciences of the Universe; Spectra; Volcanic activity; Montserrat; Antilles; Guadeloupe; West Indies; Lesser Antilles; Leeward Islands; Caribbean region; Dominica; North American Plate; ASW, Caribbean Sea, Lesser Antilles; ASW, Caribbean Sea, Lesser Antilles, Dominica; ASW, Caribbean Sea, Lesser Antilles, Guadeloupe; Lesser Antilles, Montserrat; Geochemistry; Les Saintes; Lesser Antilles; Recent arc activity; K–Ar dating; petrogenesis; en echelon faults; dacites; oblique convergence; orogenic magmatism; volcanism; rare earths; K-Ar dating; basaltic andesite; enrichment; North American Plate; trace-element analyses; lava; half grabens; dating; tectonics; magmatic series; andesites; volcanic rocks; whole rock; volcanoes; igneous rocks; partial melting; island arcs; K/Ar; major-element analyses

We present new groundmass K–Ar ages obtained using the Cassignol–Gillot technique, together with whole-rock major and trace elements, from Les Saintes islands (Terre-de-Haut and Terre-de-Bas). They are located along the northern Lesser Antilles inner arc, between Basse-Terre Island (western Guadelou...