Grenne, Tor Bedded jaspers of the Ordovician Lokken ophiolite, Norway: seafloor deposition and diagenetic maturation of hydrothermal plume-derived silica-iron gels - Berlin Springer 2003 - pp. 625-639 ilus. ISSN: 0026-4598 Subjects--Topical Terms: ALTERACIÓN HIDROTERMALAMBIENTE MARINODIAGENESISGEOQUÍMICAHIERRO BANDEADOJASPEPETROGRAFÍASEDIMENTACIONSULFUROS MASIVOSTEXTURA Subjects--Geographic Terms: NORUEGA Subjects--Index Terms: LOKKEN, YAC.