Niino, Akiko et al. (2009): Ni-Fe alloy possibly associated with reduced magmatic fluids in lower-crustal gabbro, IODP Hole U1309D, Atlantis Massif, Mid-Atlantic Ridge

Leg/Site/Hole:
IODP 304 U1309
IODP 305 U1309
Identifier:
2010-063968
georefid
10.2465/jmps.090622c
doi
Creator:
Niino, Akiko
Hokkaido University, Department of Natural History Sciences, Hokkaido, Japan
author
Maeda, Jinichiro
Geological Survey of Japan, Japan
author
Yamasaki, Toru
author
Takeda, Fumiaki
author
Identification:
Ni-Fe alloy possibly associated with reduced magmatic fluids in lower-crustal gabbro, IODP Hole U1309D, Atlantis Massif, Mid-Atlantic Ridge
2009
Journal of Mineralogical and Petrological Sciences
Mineralogical Society of Japan and the Japanese Association of Mineralogists, Petrologists and Economic Geologists, Sendai, Japan
104
5
290-295
A Ni-Fe alloy (Ni (sub 3.8) Fe (sub 0.1) Co (sub 0.1) ) was found in olivine-poor gabbro recovered from the Integrated Ocean Drilling Program (IODP) Hole U1309D, Atlantis Massif, 30 degrees N on the Mid-Atlantic Ridge. Ni-Fe alloys are one of the unique minerals formed during serpentinization; however, our finding establishes that Ni-Fe alloys are also formed in the gabbroic crust possibly associated with extremely reduced magmatic fluids. The occurrence of the Ni-Fe alloy suggests that oceanic lower-crustal gabbros as well as serpentinites may be potential reservoirs of abiogenic CH (sub 4) .
English
Serial
Coverage:Geographic coordinates:
North:30.1100
West:-42.0700East: -42.0600
South:30.1000
Igneous and metamorphic petrology; General geochemistry; aliphatic hydrocarbons; alkanes; alloys; Atlantic Ocean; Atlantis Massif; crust; EDS spectra; Eh; electron probe data; Expeditions 304/305; fluid phase; gabbros; hydrocarbons; igneous rocks; Integrated Ocean Drilling Program; IODP Site U1309; iron; lower crust; magmas; metaigneous rocks; metals; metamorphic rocks; metasomatic rocks; metasomatism; methane; Mid-Atlantic Ridge; nickel; North Atlantic; ocean floors; organic compounds; petrography; plutonic rocks; SEM data; serpentinite; serpentinization; spectra; X-ray spectra;
.