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Crustal processes sustain Arctic abiotic gas hydrate and fluid flow systems

Permanent lenke
https://hdl.handle.net/10037/18754
DOI
https://doi.org/10.1038/s41598-020-67426-3
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article.pdf (4.527Mb)
Publisert versjon (PDF)
Dato
2020-06-30
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Forfatter
Waghorn, Kate Alyse; Vadakkepuliyambatta, Sunil; Plaza-Faverola, Andreia; Johnson, Joel E; Bünz, Stefan; Waage, Malin
Sammendrag
The Svyatogor Ridge and surroundings, located on the sediment-covered western flank of the Northern Knipovich Ridge, host extensive gas hydrate and related fluid flow systems. The fluid flow system here manifests in the upper sedimentary sequence as gas hydrates and free gas, indicated by bottom simulating reflections (BSRs) and amplitude anomalies. Using 2D seismic lines and bathymetric data, we map tectonic features such as faults, crustal highs, and indicators of fluid flow processes. Results indicate a strong correlation between crustal faults, crustal highs and fluid accumulations in the overlying sediments, as well as an increase in geothermal gradient over crustal faults. We conclude here that gas generated during the serpentinization of exhumed mantle rocks drive the extensive occurrence of gas hydrate and fluid flow systems in the region and transform faults act as an additional major pathway for fluid circulation.
Forlag
Nature Research
Sitering
Waghorn KA, Vadakkepuliyambatta S, Plaza-Faverola A, Johnson JE, Bünz S, Waage M. Crustal processes sustain Arctic abiotic gas hydrate and fluid flow systems. Scientific Reports. 2020
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  • Artikler, rapporter og annet (geovitenskap) [806]
Copyright 2020 The Author(s)

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