NITROGEN ISOTOPIC EVOLUTION OF CARBONACEOUS MATTER DURING METAMORPHISM: METHODOLOGY AND PRELIMINARY RESULTS
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dc.contributor.author | Ader M. | |
dc.contributor.author | Cartigny P. | |
dc.contributor.author | Petit E. | |
dc.contributor.author | Javoy M. | |
dc.contributor.author | Boudou J.P. | |
dc.contributor.author | Oh J.H. | |
dc.date.accessioned | 2024-09-14T06:08:11Z | |
dc.date.available | 2024-09-14T06:08:11Z | |
dc.date.issued | 2006 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=28026596 | |
dc.identifier.citation | Chemical Geology, 2006, 232, 3-4, 152-169 | |
dc.identifier.issn | 0009-2541 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/45111 | |
dc.description.abstract | Nitrogen content and isotopic composition of carbonaceous-rich metasediments were determined by on-line and sealed-tube combustion using ultra-high vacuum line and static mass spectrometer adapted to analyse nitrogen nanomoles. Accurate measurements showed that nitrogen amount released by on-line combustion technique was underestimated to various extents. As a result, the nitrogen isotopic composition was not correctly determined. In contrast, sealed-tube combustion appeared to yield the most reproducible and accurate measurements, except for nitrogen depleted carbonaceous matter (semi-graphite to graphite transition) containing less than around 60 ppm of nitrogen, which were contaminated during their extraction from the rock. In view of that, a preliminary sealed-tube investigation of the organic nitrogen content and isotopic composition in a homogenous series of low-grade metasediments was undertaken: in spite of an important nitrogen loss, the carbonaceous matter nitrogen isotopic composition remains about the same during the meta-anthracite and semi-graphitisation stages. Inferences on the process of organic nitrogen mineralization during carbonaceous matter metamorphism can be drawn and several paleo-biogeochemical implications envisaged. © 2006 Elsevier B.V. All rights reserved. | |
dc.subject | CARBONACEOUS MATTER | |
dc.subject | GRAPHITE | |
dc.subject | KEROGEN | |
dc.subject | METAMORPHISM | |
dc.subject | NITROGEN ISOTOPES | |
dc.title | NITROGEN ISOTOPIC EVOLUTION OF CARBONACEOUS MATTER DURING METAMORPHISM: METHODOLOGY AND PRELIMINARY RESULTS | |
dc.type | Статья | |
dc.identifier.doi | 10.1016/j.chemgeo.2006.02.019 |
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