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Insights into methane dynamics from analysis of authigenic carbonates and chemosynthetic mussels at newly-discovered Atlantic Margin seeps

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10.1016/j.epsl.2016.05.023

Summary

The recent discovery of active methane venting along the US northern and mid-Atlantic margin represents a new source of global methane not previously accounted for in carbon budgets from this region. However, uncertainty remains as to the origin and history of methane seepage along this tectonically inactive passive margin. Here we present the first isotopic analyses of authigenic carbonates and methanotrophic deep-sea mussels, Bathymodiolus sp., and the first direct constraints on the timing of past methane emission, based on samples collected at the upper slope Baltimore Canyon (∼385 m water depth) and deepwater Norfolk (∼1600 m) seep fields within the area of newly-discovered venting. The authigenic carbonates at both sites were [...]

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Harvested on Sun Jul 31 04:16:27 MDT 2016 from MODS XML Service

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Type Scheme Key
local-index unknown 70171306
local-pk unknown 70171306
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1016/j.epsl.2016.05.023
series unknown Earth and Planetary Science Letters

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citationTypeArticle
journalEarth and Planetary Science Letters
languageEnglish
parts
typevolume
value449

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