TY - JOUR
T1 - 10Be in rhodochrosite nodules from Neogene sediments along the Galapagos Ridge, equatorial Pacific
AU - Aldahan, A.
AU - Morad, S.
AU - Possnert, G.
AU - Sturesson, U.
AU - ElSaiy, A.
PY - 2010/4/1
Y1 - 2010/4/1
N2 - 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). 10Be 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.
AB - 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). 10Be 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.
KW - AMS
KW - Be-10
KW - Galapagos
KW - Marine sediments
KW - Rhodochrosite
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U2 - 10.1016/j.nimb.2009.10.146
DO - 10.1016/j.nimb.2009.10.146
M3 - Article
AN - SCOPUS:77949897478
SN - 0168-583X
VL - 268
SP - 1253
EP - 1256
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 7-8
ER -