HELIUM ISOTOPIC COMPOSITION OF HYDROTHERMAL FLUIDS FROM THE MANUS BACK-ARC BASIN, PAPUA NEW GUINEA
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dc.contributor.author | Fourre E. | |
dc.contributor.author | Jean-Baptiste P. | |
dc.contributor.author | Charlou J.-L. | |
dc.contributor.author | Donval J.P. | |
dc.contributor.author | Ishibashi J.I. | |
dc.date.accessioned | 2024-09-04T09:55:38Z | |
dc.date.available | 2024-09-04T09:55:38Z | |
dc.date.issued | 2006 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=31347153 | |
dc.identifier.citation | Geochemical Journal, 2006, 40, 3, 245-252 | |
dc.identifier.issn | 0016-7002 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/44922 | |
dc.description.abstract | We present isotopic analysis of helium in hydrothermal fluids from the Manus back-arc basin, collected during the French-Japanese Manusflux and Manaute cruises in 1995 and 2000, respectively. The helium isotope composition of the fluids is comparable to that measured elsewhere in similar subduction environments, with 3He/4He values (7.4 to 7.9 Ra) slightly lower than typical MORB values, except on the Manus Spreading Center (MSC) where higher values (12 ± 0.1 Ra) are observed. The causal link between the narrow spatial extent of the 3He/4He anomaly at the MSC and a 3He-rich deep mantle component remains elusive, based on available geophysical data. Thus, the Manus Spreading Center results may be an interesting example of small scale upper-mantle heterogeneity. Copyright © 2006 by The Geochemical Society of Japan. | |
dc.subject | BACK-ARC BASINS | |
dc.subject | HELIUM ISOTOPES | |
dc.subject | HYDROTHERMAL FLUIDS | |
dc.subject | MANUS BASIN | |
dc.subject | WESTERN PACIFIC | |
dc.title | HELIUM ISOTOPIC COMPOSITION OF HYDROTHERMAL FLUIDS FROM THE MANUS BACK-ARC BASIN, PAPUA NEW GUINEA | |
dc.type | Статья | |
dc.identifier.doi | 10.2343/geochemj.40.245 |
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