10Be in rhodochrosite nodules from Neogene sediments along the Galapagos Ridge, equatorial Pacific
2010 (English)In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, ISSN 0168-583X, Vol. 268, no 7-8, 1253-1256 p.Article in journal (Refereed) Published
Microcrystalline, calcian rhodochrosite occurs as nodules around burrows in late Neogene pelagic sediments from the Galapagos Ridge in the Guatemala Basin, eastern equatorial Pacific (DSDP Leg 68; Site 503). Be-10 isotope revealed that the rhodochrosite nodules have formed under growth conditions much faster than those reported for Fe-Mn nodules. The overall REE patterns of the nodules and host pelagic sediments indicate element derivation mainly from marine pore water. However, variations in the shale normalised Eu values suggest influx of hydrothermal fluids into mounds area at Galapagos, which is also evidenced by the similar minor and major element contents in the nodules and host sediments.
Place, publisher, year, edition, pages
2010. Vol. 268, no 7-8, 1253-1256 p.
Be-10, Rhodochrosite, AMS, Marine sediments, Galapagos
IdentifiersURN: urn:nbn:se:uu:diva-137448DOI: 10.1016/j.nimb.2009.10.146ISI: 000277462300141OAI: oai:DiVA.org:uu-137448DiVA: diva2:378522