Svyatogor Ridge—A Gas Hydrate System Driven by Crustal Scale Processes
Abstract
Svyatogor Ridge is a gas hydrate-bearing sediment drift on the flank of an ultra-slow spreading mid-ocean ridge. Svyatogor Ridge hosts shallow gas accumulations, a strong bottom simulating reflection and fluid flow pathways (predominantly chimneys and faults) to the seafloor, culminating in pockmarks. Large offset detachment faults underlying Svyatogor Ridge provide access to deeper crustal and mantle ultramafic rocks, likely acting as conduits for warm fluid (and possible abiotic methane produced via serpentinization) to reach the shallow subsurface. This environment is distinct compared to other Arctic gas hydrate systems as it rests on the flank of an active mid-oceanic spreading ridge. It is the only known gas hydrate-bearing sediment drift in the Arctic where crustal-scale processes (mid-ocean ridge spreading) directly control the pressure and temperature regime for gas hydrate formation as well as fluid flow dynamics at the site.
Department
Earth Sciences
Publication Date
1-1-2022
Journal Title
World Atlas of Submarine Gas Hydrates in Continental Margins
Publisher
Springer
Digital Object Identifier (DOI)
Document Type
Article
Recommended Citation
Waghorn K.A., Johnson J.E., Bünz S., Plaza-Faverola A., Vadakkepuliyambatta S., Waage M., 2022. Svyatogor Ridge—A Gas Hydrate System Driven by Crustal Scale Processes. In: Mienert J., Berndt C., Tréhu A.M., Camerlenghi A., Liu CS. (eds) World Atlas of Submarine Gas Hydrates in Continental Margins. Springer, Cham. https://doi.org/10.1007/978-3-030-81186-0_20
Rights
© Springer Nature Switzerland AG 2022