dc.date.accessioned | 2023-02-14T16:49:37Z | |
dc.date.available | 2023-02-14T16:49:37Z | |
dc.date.created | 2022-12-05T09:54:28Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Aiken, John Mark Sohn, Robert A. Renard, Francois Matter, Juerg Kelemen, Peter Jamtveit, Bjørn . Gas Migration Episodes Observed During Peridotite Alteration in the Samail Ophiolite, Oman. Geophysical Research Letters. 2022, 49(21) | |
dc.identifier.uri | http://hdl.handle.net/10852/99960 | |
dc.description.abstract | Serpentinization and carbonation of mantle rocks (peridotite alteration) are fundamentally important processes for a spectrum of geoscience topics, including arc volcanism, earthquake processes, chemosynthetic biological communities, and carbon sequestration. Data from a hydrophone array deployed in the Multi-Borehole Observatory (MBO) of the Oman Drilling Project demonstrates that free gas generated by peridotite alteration and/or microbial activity migrates through the formation in discrete bursts of activity. We detected several, minutes-long, swarms of gas discharge into Hole BA1B of the MBO over the course of a 9 month observation interval. The episodic nature of the migration events indicates that free gas accumulates in the permeable flow network, is pressurized, and discharges rapidly into the borehole when a critical pressure, likely associated with a capillary barrier at a flow constriction, is reached. Our observations reveal a dynamic mode of fluid migration during serpentinization, and highlight the important role that free gas can play in modulating pore pressure, fluid flow, and alteration kinetics during peridotite weathering. | |
dc.language | EN | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.title | Gas Migration Episodes Observed During Peridotite Alteration in the Samail Ophiolite, Oman | |
dc.title.alternative | ENEngelskEnglishGas Migration Episodes Observed During Peridotite Alteration in the Samail Ophiolite, Oman | |
dc.type | Journal article | |
dc.creator.author | Aiken, John Mark | |
dc.creator.author | Sohn, Robert A. | |
dc.creator.author | Renard, Francois | |
dc.creator.author | Matter, Juerg | |
dc.creator.author | Kelemen, Peter | |
dc.creator.author | Jamtveit, Bjørn | |
cristin.unitcode | 185,15,18,0 | |
cristin.unitname | NJORD senter for studier av jordens fysikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |
dc.identifier.cristin | 2088496 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geophysical Research Letters&rft.volume=49&rft.spage=&rft.date=2022 | |
dc.identifier.jtitle | Geophysical Research Letters | |
dc.identifier.volume | 49 | |
dc.identifier.issue | 21 | |
dc.identifier.pagecount | 0 | |
dc.identifier.doi | https://doi.org/10.1029/2022GL100395 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 0094-8276 | |
dc.type.version | PublishedVersion | |
cristin.articleid | e2022GL100395 | |